Continuous-wave Terahertz Spectroscopy System Based on Photodiodes
|
|
- Corey Griffin
- 5 years ago
- Views:
Transcription
1 PIERS ONLINE, VOL. 6, NO. 4, Continuous-wave Terahertz Spectroscopy System Based on Photodiodes Tadao Nagatsuma 1, 2, Akira Kaino 1, Shintaro Hisatake 1, Katsuhiro Ajito 2, Ho-Jin Song 2, Atsushi Wakatsuki 3, Yoshifumi Muramoto 3, Naoya Kukutsu 2, and Yuichi Kado 2 1 Graduate School of Engineering Science, Osaka University 1-3 Machikaneyama, Toyonaka, Osaka , Japan 2 NTT Microsystem Integration Laboratories, NTT Corporation 3-1 Morinosato Wakamiya, Atsugi, Kanagawa , Japan 3 NTT Photonics Laboratories, NTT Corporation 3-1 Morinosato Wakamiya, Atsugi, Kanagawa , Japan Abstract Photodiodes have been commonly used for generation of continuous terahertz (THz) waves. In this paper, we proposed the use of photodiodes also for detection of THz waves in order to realize CW THz spectroscopy system based on 1.55-µm fiber-optics. We experimentally demonstrated two detection schemes based on the square-law detection and downconversion, and compared them with respect to sensitivity and dynamic range at GHz. 1. INTRODUCTION Terahertz (THz) waves, which cover the frequency range from 100 GHz to 10 THz, have been actively applied to sensing, radars, spectroscopy, measurement and communications. THz pulses based on femto-second pulse lasers have proven to be useful for imaging of objects, and spectroscopy of gas, liquid and solid materials [1, 2]. In particular, the time-domain spectroscopy (TDS) system based on THz pulses has been established as a laboratory standard for the THz spectroscopy, and is commercially available. In the THz-TDS system, frequency characteristics are obtained by Fourier transforming the time-domain data as shown in Fig. 1. Recently, spectroscopy systems based on continuous wave (CW) technology (Fig. 2), which uses monochromatic sources, have attracted great interest [3]. The CW source-based system provides a higher signal-to-noise ratio (SNR) and spectral resolution. When the frequency band of interest is targeted for the specific absorption line of the objects being tested, the CW system with the selected frequency-scan length and resolution is more practical in terms of data acquisition time as well as system cost. Pulsed THz Wave Optical Pulse Optical Source Modulator Generator Object Detector FFT Movable Delay Line Optical Pulse Time Figure 1: Block diagram of THz time-domain spectroscopy system. Continuous Wave (CW) CW THz Wave Optical Source Modulator Generator Object Detector Sweep Fixed Delay Line CW Figure 2: Block diagram of THz frequency-domain spectroscopy system, based on homodyne detection.
2 PIERS ONLINE, VOL. 6, NO. 4, µm telecom-wavelength technology is essential in universal instrumentation of CW systems, since low-loss/low-dispersion optical fiber cables can be employed similar to the use of coaxial cables in the conventional systems, and optical components are highly reliable and matured. At 1.55 µm, high-power THz photodiodes such as uni-traveling-carrier-photodiodes (s) [4] are superior to photoconductors based on, for example, low-temperature grown InGaAs in terms of output power as THz signal generators or emitters, while only photoconductors have been used as THz detectors in the CW spectroscopy system [5, 6]. In this paper, we propose and demonstrate the use of photodiodes for both generation and detection in the CW spectroscopy system. First, we experimentally show two kinds of operation modes in photodiodes at GHz; one is a square-law detector under forward bias, and the other is a down converter under reverse bias. Then, we compare them with respect to sensitivity and dynamic range. 2. THz PHOTODIODE TECHNOLOGIES Figure 3 shows the band diagram of the photodiode optimized for the operation at GHz [7]. This structure is a modification of the uni-traveling-carrier photodiode (). The UTC- PD has a feature of both high-speed and high-output power operation owing to its unique carrier transport mechanism [8]. The photodiode chip was packaged into the module with a rectangular waveguide (WR-3) output port [7]. The frequency dependence of the output power was evaluated by heterodyning the two wavelengths of light from the wavelength-tunable light sources at around 1.55 µm. The THz output power was measured by thermo-coupled power meter. Fig. 3 shows the frequency dependence of the output power generated from the module. The 3-dB bandwidth is 140 GHz (from 270 to 410 GHz). The peak output power was 110 µw at 380 GHz for a photocurrent of 10 ma with a bias voltage of 1.1 V. The output power could be further increased to over 400 µw ( 4 dbm) with increasing the photocurrent up to 20 ma. 3. PRINCIPLE OF THz-WAVE DETECTION WITH PHOTODIODE Figure 4 shows the operation principle of the photodiodes as detectors. There are two operation modes with different voltage-bias conditions; one is a square-law detector under the forward bias condition, and the other is a downconverter under the reverse bias. In case of down-conversion (Fig. 4), the origin of the nonlinearity of the can be explained by Diffusion Block p-contact p-doped Absorption un-doped Collection un-doped Absorption n-contact Detected Power (µw) GHz 10 ma 6 ma (GHz) Figure 3: Band diagram of the photodiode. dependence of output power from the photodiode module for photocurrents of 6 ma and 10 ma. Homodyne Detection Photodiode I Diode V Square-law Detection f = f LO + f THz wave Photonic LO Figure 4: Operation points of photodiode as a THz detector. Schematic representation of photodiode as a down-converter. f f LO
3 PIERS ONLINE, VOL. 6, NO. 4, the dynamic capacitance associated with charge storage in the photo-absorption layer [9]. Mixing between the input THz wave, f, and the local oscillator (LO) signal, f LO, photonically generated in the photodiode leads to the intermediate frequency, f. 4. EXPERIMENTS AND DISCUSSION Figure 5 shows a block diagram of the CW THz spectrometer consisting of the transmitter (Tx) and the receiver (Rx) based on the square-law detection. can be changed by tuning a difference in the wavelengths of two frequency (wavelength)-tunable lasers. The frequency was modulated at an intermediate frequency (10 khz) using an optical chopper, and the output signal from the Rx at 10 khz was measured by the spectrum analyzer. Figure 6 plots the relationship between the input THz power and the detected () power at 350 GHz. Bias voltages were 1 V and 0.68 V for Tx and Rx, respectively, which were chosen to make the Tx output power and the Rx sensitivity maximum. In the experiment, Tx and Rx were directly connected by the rectangular waveguide. As shown in Fig. 6, the slope almost fits to the square-law relationship. Figure 7 shows a block diagram of the CW THz spectrometer consisting of the transmitter and the receiver based on the down-conversion. This coherent system is often referred to as homodyne detection system [5]. Optical delay line was used to maximize the intermediate frequency signal at 10 khz. Figure 8 plots the relationship between the detected () power and the optical delay length at 350 GHz. Bias voltages were 1 V and 1 V for Tx and Rx, respectively. In the experiment, Tx and Rx were directly connected by the rectangular waveguide. Two periods corresponds to the wavelength of 0.86 mm at 350 GHz, which confirms the proper homodyne detection. By changing the wavelength difference between two wavelength-tunable lasers, frequency dependence of the power was measured as shown in Fig dB bandwidth ranges from 280 GHz to 410 GHz, which corresponds to 3-dB bandwidth of the output power of the (Fig. 3). 350 GHz Coupler Spectrum Analyzer 10 khz Chopper THz Wave Bias -tee Bias Voltage1 Tx Rx P Power (dbm) Bias Voltage 2 Figure 5: Block diagram of CW THz spectrometer using the receiver based on the square-law detection. Figure 6: Relationship between input THz () power and the detected () power measured at 350 GHz. 350 GHz 10 khz Chopper Bias Voltage1 Tx THz Wave Coupler Spectrum Analyzer Optical Delay Line LO Rx Bias -tee Bias Voltage 2 Figure 7: Block diagram of CW THz spectrometer using the receiver based on the down-conversion.
4 PIERS ONLINE, VOL. 6, NO. 4, Figure 9 shows the dependence of the power on the photocurrent, which corresponds to the optical LO power, at 350 GHz. As is the case of usual electrical mixers, the power increases with the LO power, and saturates at certain LO level, or the photocurrent of 4 5 ma. Finally, dependence of the power on the input PF power was compared between the homodyne detection and the square-law detection as shown in Fig. 10. For the homodyne detection, the photocurrent was set to 4 ma, which is an optimum condition experimentally confirmed (Fig. 9). Maximum S/N (ratio of power to noise level) is 39 db for the square-law detection, while it is 58 db for the homodyne detection. This corresponds to the difference in the maximum conversion efficiency is 19 db. Since the available output power from the is more than 4 dbm, about 20-dB loss in the transmission between transmitter and receiver and as well as in the object under test is still allowable for the actual spectroscopy. In addition, since the slope in the relationship between the power and the power is smaller for the homodyne detection, loss caused in the object and transmission has less effect, which may be a merit of the homodyne detection scheme mm Delay Length (mm) Figure 8: Dependence of power on delay length. system (GHz) characteristics of the homodyne Detected Power ( dbm) Saturated against LO power Photocurrent ( ma ) Figure 9: Relationship between the photocurrent and the detected () power measured at 350 GHz Homodyne Detection Square-Law Detection Power ( dbm) Figure 10: Comparison of receiver performance between down-conversion and square-law detection. 5. CONCLUSION In the conventional CW THz spectroscopy system, photoconductor and/or photodiode have been used for the transmitter, while only photoconductors have been employed for the receiver. In this paper, we proposed the use of photodiode as the receiver for the CW terahertz spectroscopy system in addition to the transmitter, and conducted proof-of-concept experiments at GHz. We compared two detection schemes; square-law detection with forward diode bias, and downconversion with reverse bias. The conversion efficiency of the down-conversion was 19 db higher than that of the square-law detection, and was comparable to those of InGaAs photoconductors. The components used are all 1.55-µm telecom-fiber-optic ones, which may lead to the cost-effective and versatile spectroscopy system. Currently, the bandwidth is limited by waveguide-structure of the transmitter and receiver modules, and it can be enhanced by using a broadband antenna
5 PIERS ONLINE, VOL. 6, NO. 4, integrated with the photodiode. Use of the same photodiodes for both transmitter and receiver will also promising for integrated spectrometer chip in bio-sensor applications [10]. ACKNOWLEDGMENT The authors wish to thank Drs. K. Iwatsuki, N. Shigekawa, T. Enoki, and M. Kitamura for their support and encouragement. REFERENCES 1. Cooke, M., Filling the THz gap with new applications, Semiconductor Today, Vol. 2, No. 1, 39 43, Zhang, X.-C. and J. Xu, Introduction to THz Wave Photonics, Springer, Deninger, A., A. Roggenbuck, S. I. Schindler, C. Mayorga, H. Schmitz, J. Hemberger, R. Güsten, and M. Grüninge, CW THz spectrometer with 90 db SNR and MHz frequency resolution, Proc Infrared, Millimeter and Terahertz Waves (IRMMW-THz 2009), T4A , September Nagatsuma, T., Generating millimeter and terahertz waves, IEEE Microwave Magazine, Vol. 10, No. 4, 64 74, Ducournau, G., A. Beck, K. Blary, E. Peytavit, M. Zaknoune, T. Akalin, J.-F.Lampin, M. Martin, and J. Mangeney, All-fiber continuous wave coherent homodyne terahertz spectrometer operating at 1.55 µm wavelengths, Proc Infrared, Millimeter and Terahertz Waves (IRMMW-THz 2009), T4A , September Stanze, D., H.-G. Bach, R. Kunkel, D. Schmidt, H. Roehle, M. Schlak, M. Schell, and B. Sartorius, Coherent CW terahertz systems employing photodiode emitters, Proc Infrared, Millimeter and Terahertz Waves (IRMMW-THz 2009), T4A , September Wakatsuki, A., T. Furuta, Y. Muramoto, T. Yoshimatsua, and H. Ito, High-power and broadband sub-terahertz wave generation using a J-band photomixer module with rectangularwaveguide output port, Proc Infrared, Millimeter and Terahertz Waves (IRMMW-THz 2008), M4K2.1199, September Nagatsuma, T., H. Ito, and T. Ishibashi, High-power photodiodes and their applications, Laser & Photonics Review, Vol. 3, No. 1 2, , January Fushimi, H., T. Furuta, T. Ishibashi, and H. Ito, Photoresponse nonlinearity of a uni-travelingcarrier photodiode and its application to optoelectronic millimeter-wave mixing in 60 GHz band, Jap. J. Appl. Phys., Vol. 43, No. 7B, L , Nagel, M., P. H. Bolivar, M. Brucherseifer, and H. Kurz, Integrated THz technology for label-free genetic diagnostics, Appl. Phys. Lett., Vol. 80, No. 1, , 2002.
PHOTONIC GENERATION OF TERAHERTZ WAVES FOR COMMUNICATIONS AND SENSING
PHOTONIC GENERATION OF TERAHERTZ WAVES FOR COMMUNICATIONS AND SENSING Tadao Nagatsuma Graduate School of Engineering Science, Osaka University, 1-3 Machikaneyma, Toyonaka 560-8531, Japan nagatuma@ee.es.osaka-u.ac.jp
More informationMicrowave Photonic Devices and Their Applications to Communications and Measurements
PIRS NLIN, VL. 4, N. 3, 2008 376 Microwave Devices and Their Applications to Communications and Measurements Tadao Nagatsuma 1, 2 and Yuichi Kado 1 1 NTT Microsystem Integration Laboratories, NTT Corporation
More informationOptoelectronic detection of millimetre-wave signals with travelling-wave uni-travelling carrier photodiodes
Optoelectronic detection of millimetre-wave signals with travelling-wave uni-travelling carrier photodiodes Efthymios Rouvalis,* M artyn J. Fice, Cyril C. Renaud, and Alwyn J. Seeds Department of Electronic
More informationALMA MEMO 399 Millimeter Wave Generation Using a Uni-Traveling-Carrier Photodiode
ALMA MEMO 399 Millimeter Wave Generation Using a Uni-Traveling-Carrier Photodiode T. Noguchi, A. Ueda, H.Iwashita, S. Takano, Y. Sekimoto, M. Ishiguro, T. Ishibashi, H. Ito, and T. Nagatsuma Nobeyama Radio
More informationCompact cw Terahertz Spectrometer Pumped at 1.5 μm Wavelength
DOI 10.1007/s10762-010-9751-8 Compact cw Terahertz Spectrometer Pumped at 1.5 μm Wavelength Dennis Stanze & Anselm Deninger & Axel Roggenbuck & Stephanie Schindler & Michael Schlak & Bernd Sartorius Received:
More informationProject: IEEE P Working Group for Wireless Personal Area Networks (WPANs)
Project: IEEE P802.15 Working Group for Wireless Personal Area Networks (WPANs) Title: Feasibility test of THz channel for high-speed wireless link Date Submitted: 12 Nov 2013 Source: Jae-Young Kim, Ho-Jin
More information8-2 Stand-off Gas Sensing System Based on Terahertz Spectroscopy
8-2 Stand-off Gas Sensing System Based on Terahertz Spectroscopy SHIMIZU Naofumi, FURUTA Tomofumi, KOHJIRO Satoshi, SUIZU Koji, KADO Yuichi, and KOMIYAMA Susumu We launched into a development of a new
More informationPhotomixer as a self-oscillating mixer
Photomixer as a self-oscillating mixer Shuji Matsuura The Institute of Space and Astronautical Sciences, 3-1-1 Yoshinodai, Sagamihara, Kanagawa 9-8510, Japan. e-mail:matsuura@ir.isas.ac.jp Abstract Photomixing
More informationContinuous Tilz-Wave Generation using Uni-Traveling-Carrier Photodiode
15th International Symposium on Space Terahert Technology Abstract Continuous Tilz-Wave Generation using Uni-Traveling-Carrier Photodiode Hiroshi Ito, Tomofumi Furuta, Fumito Nakajima, Kaoru Yoshino, and
More informationF-Band ( GHz) Uni-Traveling-Carrier Photodiode Module for a Photonic Local Oscillator
14th International Symposium on Space Terahert:- Technology F-Band (90-140 GHz) Uni-Traveling-Carrier Photodiode Module for a Photonic Local Oscillator Hiroshi Ito, Tsuyoshi Ito, Yoshifumi Muramoto. Tomofumi
More informationTerahertz Technologies for Industrial Applications. Dr. Anselm Deninger TOPTICA Photonics AG
Terahertz Technologies for Industrial Applications Dr. Anselm Deninger TOPTICA Photonics AG LOEWE STT Workshop 11.04.2013 TOPTICA: Key Figures Technology: Diode Laser Systems 190 3500 nm Ultrafast Fiber
More informationTerahertz balanced self-heterodyne spectrometer with SNR-limited phase-measurement sensitivity
Terahertz balanced self-heterodyne spectrometer with SNR-limited phase-measurement sensitivity Shintaro Hisatake, 1, Yuki Koda, 1 Ryosuke Nakamura, 2 Norio Hamada, 2 and Tadao Nagatsuma 1 1 Advanced Electronics
More informationMillimeter Wave Generation Using a Uni-Traveling-Carrier Photodiode
th 12 International Symposium on Space Terahertz Technology Millimeter Wave Generation Using a Uni-Traveling-Carrier Photodiode T. Noguchi, A. Ueda, H.Iwashita, S. Takano, Y. Sekimoto, M. Ishiguro, T.
More informationOverview of Millimeter and Terahertz Wave Application Research
: Applied Technology for Millimeter Overview of Millimeter and Terahertz Wave Application Research Naoya Kukutsu and Yuichi Kado Abstract Millimeter and terahertz wave technologies are fields that lie
More informationLow Phase Noise Laser Synthesizer with Simple Configuration Adopting Phase Modulator and Fiber Bragg Gratings
ALMA Memo #508 Low Phase Noise Laser Synthesizer with Simple Configuration Adopting Phase Modulator and Fiber Bragg Gratings Takashi YAMAMOTO 1, Satoki KAWANISHI 1, Akitoshi UEDA 2, and Masato ISHIGURO
More informationFabrication of antenna integrated UTC-PDs as THz sources
Invited paper Fabrication of antenna integrated UTC-PDs as THz sources Siwei Sun 1, Tengyun Wang, Xiao xie 1, Lichen Zhang 1, Yuan Yao and Song Liang 1* 1 Key Laboratory of Semiconductor Materials Science,
More informationNovember 2010 doc.: IEEE thz
Slide 1 Feasibility Test of Terahertz Wireless Communications at 300 GHz H.-J. Song 1, K. Ajito 1, T. Nagatsuma 2 and N. Kukutsu 1 1 NTT Microsystem Integration Laboratories. 2 Osaka University Slide 2
More informationTHz communications: general issues THz devices for coms (Tx and Rx) Some Reported com links Some conclusions
THz communications for next generation HD rate wireless links TENXSYS Talk, 2015, June 17th G. Ducournau, M. Zaknoune, P. Szriftgiser, Jean-François Lampin (Tx and Rx) (Tx and Rx) 2 3 THz coms: general
More informationA NOVEL SCHEME FOR OPTICAL MILLIMETER WAVE GENERATION USING MZM
A NOVEL SCHEME FOR OPTICAL MILLIMETER WAVE GENERATION USING MZM Poomari S. and Arvind Chakrapani Department of Electronics and Communication Engineering, Karpagam College of Engineering, Coimbatore, Tamil
More informationPHOTONIC INTEGRATED CIRCUITS FOR PHASED-ARRAY BEAMFORMING
PHOTONIC INTEGRATED CIRCUITS FOR PHASED-ARRAY BEAMFORMING F.E. VAN VLIET J. STULEMEIJER # K.W.BENOIST D.P.H. MAAT # M.K.SMIT # R. VAN DIJK * * TNO Physics and Electronics Laboratory P.O. Box 96864 2509
More informationSimultaneous optical and electrical mixing in a single fast photodiode for the demodulation of weak mm-wave signals
Simultaneous optical and electrical mixing in a single fast photodiode for the demodulation of weak mm-wave signals Michele Norgia, Guido Giuliani, Riccardo Miglierina and Silvano Donati University of
More informationPhotomixing THz Spectrometer Review
Photomixing THz Spectrometer Review Joseph R. Demers, PhD 9/29/2015 Leveraging Telecom Manufacturing Techniques to Improve THz Technology Terahertz Spectrum THz radiation was difficult to produce and detect
More informationPhotonic Generation and Distribution of Coherent Multiband THz Wireless Signals
Photonic Generation and Distribution of Coherent Multiband THz Wireless Signals Martyn Fice, Haymen Shams, Zhen Yang, Luis Gonzalez-Guerrero, Michele Natrella, Cyril Renaud, and Alwyn Seeds University
More informationHigh-frequency tuning of high-powered DFB MOPA system with diffraction limited power up to 1.5W
High-frequency tuning of high-powered DFB MOPA system with diffraction limited power up to 1.5W Joachim Sacher, Richard Knispel, Sandra Stry Sacher Lasertechnik GmbH, Hannah Arendt Str. 3-7, D-3537 Marburg,
More informationMillimeter Wave Spectrum Analyzer with Built-in >100 GHz Preselector
Millimeter Wave Spectrum Analyzer with Built-in >1 GHz Preselector Yukiyasu Kimura, Masaaki Fuse, Akihito Otani [Summary] Fifth-generation (5G) mobile communications technologies are being actively developed
More informationInstruction manual and data sheet ipca h
1/15 instruction manual ipca-21-05-1000-800-h Instruction manual and data sheet ipca-21-05-1000-800-h Broad area interdigital photoconductive THz antenna with microlens array and hyperhemispherical silicon
More informationHigh-Speed and High-Output InP InGaAs Unitraveling-Carrier Photodiodes
IEEE JOURNAL OF SELECTED TOPICS IN QUANTUM ELECTRONICS, VOL. 10, NO. 4, JULY/AUGUST 2004 709 High-Speed and High-Output InP InGaAs Unitraveling-Carrier Photodiodes Hiroshi Ito, Senior Member, IEEE, Satoshi
More information146-GHz millimeter-wave radio-over-fiber photonic wireless transmission system
146-GHz millimeter-wave radio-over-fiber photonic wireless transmission system M. J. Fice, 1 E. Rouvalis, 1 F. van Dijk, 2 A. Accard, 2 F. Lelarge, 2 C. C. Renaud, 1 G. Carpintero, 3,* and A. J. Seeds
More informationCharacteristics of InP HEMT Harmonic Optoelectronic Mixers and Their Application to 60GHz Radio-on-Fiber Systems
. TU6D-1 Characteristics of Harmonic Optoelectronic Mixers and Their Application to 6GHz Radio-on-Fiber Systems Chang-Soon Choi 1, Hyo-Soon Kang 1, Dae-Hyun Kim 2, Kwang-Seok Seo 2 and Woo-Young Choi 1
More informationOptical frequency switching scheme for a high-speed broadband THz measurement system based on the photomixing technique
Vol. 25, No. 10 15 May 2017 OPTICS EXPRESS 11767 Optical frequency switching scheme for a high-speed broadband THz measurement system based on the photomixing technique HAJUN SONG, SEJIN HWANG, AND JONG-IN
More informationCommunications with THz Waves: Switching Data Between Two Waveguides
J Infrared Milli Terahz Waves (017) 38:1316 130 DOI 10.1007/s1076-017-048-4 Communications with THz Waves: Switching Data Between Two Waveguides J. Ma 1 & M. Weidenbach & R. Guo & M. Koch & D. M. Mittleman
More informationPB T/R Two-Channel Portable Frequency Domain Terahertz Spectrometer
Compact, Portable Terahertz Spectroscopy System Bakman Technologies versatile PB7220-2000-T/R Spectroscopy Platform is designed for scanning complex compounds to precise specifications with greater accuracy
More informationCoherent Receivers Principles Downconversion
Coherent Receivers Principles Downconversion Heterodyne receivers mix signals of different frequency; if two such signals are added together, they beat against each other. The resulting signal contains
More informationAIR-COUPLED PHOTOCONDUCTIVE ANTENNAS
AIR-COUPLED PHOTOCONDUCTIVE ANTENNAS Report: Air-Coupled Photoconductive Antennas In this paper, we present air-coupled terahertz photoconductive antenna (THz-PCAs) transmitters and receivers made on high-resistive
More informationHolography Transmitter Design Bill Shillue 2000-Oct-03
Holography Transmitter Design Bill Shillue 2000-Oct-03 Planned Photonic Reference Distribution for Test Interferometer The transmitter for the holography receiver is made up mostly of parts that are already
More informationBeyond 100 Gbit/s wireless connectivity enabled by THz photonics
Downloaded from orbit.dtu.dk on: Dec 11, 218 Beyond 1 Gbit/s wireless connectivity enabled by THz photonics Yu, Xianbin; Jia, Shi; Pang, Xiaodan; Morioka, Toshio; Oxenløwe, Leif Katsuo Published in: Proceedings
More informationHigh-power flip-chip mounted photodiode array
High-power flip-chip mounted photodiode array Allen S. Cross, * Qiugui Zhou, Andreas Beling, Yang Fu, and Joe C. Campbell Department of Electrical and Computer Engineering, University of Virginia, 351
More informationGigabit Transmission in 60-GHz-Band Using Optical Frequency Up-Conversion by Semiconductor Optical Amplifier and Photodiode Configuration
22 Gigabit Transmission in 60-GHz-Band Using Optical Frequency Up-Conversion by Semiconductor Optical Amplifier and Photodiode Configuration Jun-Hyuk Seo, and Woo-Young Choi Department of Electrical and
More informationSpecial Issue Review. 1. Introduction
Special Issue Review In recently years, we have introduced a new concept of photonic antennas for wireless communication system using radio-over-fiber technology. The photonic antenna is a functional device
More informationMILLIMETER WAVE RADIATION GENERATED BY OPTICAL MIXING IN FETs INTEGRATED WITH PRINTED CIRCUIT ANTENNAS
Second International Symposium on Space Terahertz Technology Page 523 MILLIMETER WAVE RADIATION GENERATED BY OPTICAL MIXING IN FETs INTEGRATED WITH PRINTED CIRCUIT ANTENNAS by D.V. Plant, H.R. Fetterman,
More informationbias laser ω 2 ω 1 active area GaAs substrate antenna LTG-GaAs layer THz waves (ω 1 - ω 2 ) interdigitated electrode R L V C to antenna
The Institute of Space and Astronautical Science Report SP No.14, December 2000 A Photonic Local Oscillator Source for Far-IR and Sub-mm Heterodyne Receivers By Shuji Matsuura Λ, Geoffrey A. Blake y, Pin
More informationOptical phase-locked loop for coherent transmission over 500 km using heterodyne detection with fiber lasers
Optical phase-locked loop for coherent transmission over 500 km using heterodyne detection with fiber lasers Keisuke Kasai a), Jumpei Hongo, Masato Yoshida, and Masataka Nakazawa Research Institute of
More informationPB T/R Two-Channel Portable Frequency Domain Terahertz Spectrometer
PB7220-2000-T/R Two-Channel Portable Frequency DATASHEET MA 2015 Compact, Portable Terahertz Spectroscopy System Bakman Technologies versatile PB7220-2000-T/R Spectroscopy Platform is designed for scanning
More informationArūnas Krotkus Center for Physical Sciences & Technology, Vilnius, Lithuania
Arūnas Krotkus Center for Physical Sciences & Technology, Vilnius, Lithuania Introduction. THz optoelectronic devices. GaBiAs: technology and main physical characteristics. THz time-domain system based
More informationProject: IEEE P Working Group for Wireless Personal Area Networks N
July, 2008 Project: IEEE P802.15 Working Group for Wireless Personal Area Networks N (WPANs( WPANs) Submission Title: Millimeter-wave Photonics for High Data Rate Wireless Communication Systems Date Submitted:
More informationMeasurements of Schottky-Diode Based THz Video Detectors
Measurements of Schottky-Diode Based THz Video Detectors Hairui Liu 1, 2*, Junsheng Yu 1, Peter Huggard 2* and Byron Alderman 2 1 Beijing University of Posts and Telecommunications, Beijing, 100876, P.R.
More informationAnselm DENINGER 1 1 TOPTICA Photonics AG, D Gräfelfing, Germany 2 Fraunhofer Heinrich-Hertz-Institut, D Berlin, Germany
19 th World Conference on Non-Destructive Testing 2016 Non-Contact Thickness Measurements with Terahertz Pulses Milad YAHYAPOUR 1, Nico VIEWEG 1, Thorsten GÖBEL 2, Helmut ROEHLE 2, Anselm DENINGER 1 1
More informationFI..,. HEWLETT. High-Frequency Photodiode Characterization using a Filtered Intensity Noise Technique
FI..,. HEWLETT ~~ PACKARD High-Frequency Photodiode Characterization using a Filtered Intensity Noise Technique Doug Baney, Wayne Sorin, Steve Newton Instruments and Photonics Laboratory HPL-94-46 May,
More informationTowards Ultrahigh Speed Impulse Radio THz Wireless Communications
Downloaded from orbit.dtu.dk on: Jan 7, 9 Towards Ultrahigh Speed Impulse Radio THz Wireless Communications Yu, Xianbin; Galili, Michael; Morioka, Toshio; Jepsen, Peter Uhd; Oxenløwe, Leif Katsuo Published
More informationMillimeter- and Submillimeter-Wave Planar Varactor Sideband Generators
Millimeter- and Submillimeter-Wave Planar Varactor Sideband Generators Haiyong Xu, Gerhard S. Schoenthal, Robert M. Weikle, Jeffrey L. Hesler, and Thomas W. Crowe Department of Electrical and Computer
More informationWavelength switching using multicavity semiconductor laser diodes
Wavelength switching using multicavity semiconductor laser diodes A. P. Kanjamala and A. F. J. Levi Department of Electrical Engineering University of Southern California Los Angeles, California 989-1111
More informationCoherent power combination of two Masteroscillator-power-amplifier. semiconductor lasers using optical phase lock loops
Coherent power combination of two Masteroscillator-power-amplifier (MOPA) semiconductor lasers using optical phase lock loops Wei Liang, Naresh Satyan and Amnon Yariv Department of Applied Physics, MS
More informationNON-AMPLIFIED PHOTODETECTOR USER S GUIDE
NON-AMPLIFIED PHOTODETECTOR USER S GUIDE Thank you for purchasing your Non-amplified Photodetector. This user s guide will help answer any questions you may have regarding the safe use and optimal operation
More informationOptoelectronic Oscillator Topologies based on Resonant Tunneling Diode Fiber Optic Links
Optoelectronic Oscillator Topologies based on Resonant Tunneling Diode Fiber Optic Links Bruno Romeira* a, José M. L Figueiredo a, Kris Seunarine b, Charles N. Ironside b, a Department of Physics, CEOT,
More informationAll-Optical Clock Division Using Period-one Oscillation of Optically Injected Semiconductor Laser
International Conference on Logistics Engineering, Management and Computer Science (LEMCS 2014) All-Optical Clock Division Using Period-one Oscillation of Optically Injected Semiconductor Laser Shengxiao
More informationSynchronization of Optically Coupled Resonant Tunneling Diode Oscillators
Synchronization of ly Coupled Resonant Tunneling Diode Oscillators Bruno Romeira a, José M. L. Figueiredo a, Charles N. Ironside b, and José M. Quintana c a Centro de Electrónica, Optoelectrónica e Telecomunicações
More informationA continuous-wave Raman silicon laser
A continuous-wave Raman silicon laser Haisheng Rong, Richard Jones,.. - Intel Corporation Ultrafast Terahertz nanoelectronics Lab Jae-seok Kim 1 Contents 1. Abstract 2. Background I. Raman scattering II.
More informationEXAMINATION FOR THE DEGREE OF B.E. and M.E. Semester
EXAMINATION FOR THE DEGREE OF B.E. and M.E. Semester 2 2009 101908 OPTICAL COMMUNICATION ENGINEERING (Elec Eng 4041) 105302 SPECIAL STUDIES IN MARINE ENGINEERING (Elec Eng 7072) Official Reading Time:
More informationTerahertz Wave Spectroscopy and Analysis Platform. Full Coverage of Applications From R&D to Industrial Testing
Terahertz Wave Spectroscopy and Analysis Platform Full Coverage of Applications From R&D to Industrial Testing Terahertz Wave Spectroscopy and Analysis Platform Optimal for a wide range of terahertz research
More informationTERAPOD. Terahertz based Ultra High Bandwidth Wireless Access Networks
TERAPOD Terahertz based Ultra High Bandwidth Wireless Access Networks To investigate and demonstrate the feasibility of ultra high bandwidth wireless access networks operating in the Terahertz (THz) band.
More informationAgilent 83440B/C/D High-Speed Lightwave Converters
Agilent 8344B/C/D High-Speed Lightwave Converters DC-6/2/3 GHz, to 6 nm Technical Specifications Fast optical detector for characterizing lightwave signals Fast 5, 22, or 73 ps full-width half-max (FWHM)
More informationTHz-Imaging on its way to industrial application
THz-Imaging on its way to industrial application T. Pfeifer Laboratory for Machine Tools and Production Engineering (WZL) of RWTH Aachen niversity Manfred-Weck Building, Steinbachstraße 19, D-52074 Aachen,
More informationOptoelectronic Components Testing with a VNA(Vector Network Analyzer) VNA Roadshow Budapest 17/05/2016
Optoelectronic Components Testing with a VNA(Vector Network Analyzer) VNA Roadshow Budapest 17/05/2016 Content Introduction Photonics & Optoelectronics components Optical Measurements VNA (Vector Network
More informationAdvanced Optical Communications Prof. R. K. Shevgaonkar Department of Electrical Engineering Indian Institute of Technology, Bombay
Advanced Optical Communications Prof. R. K. Shevgaonkar Department of Electrical Engineering Indian Institute of Technology, Bombay Lecture No. # 27 EDFA In the last lecture, we talked about wavelength
More informationProject: IEEE P Working Group for Wireless Personal Area Networks (WPANs)
Project: IEEE P802.15 Working Group for Wireless Personal Area Networks (WPANs) Title: 30-Gbps-class terahertz transmission using optical sub-harmonic IQ mixer for backhaul/fronthaul directly connected
More informationWIRELESS communication systems have shown tremendous
2734 IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES, VOL. 55, NO. 12, DECEMBER 2007 Integrated Heterojunction Bipolar Transistor Optically Injection-Locked Self-Oscillating Opto-Electronic Mixers
More informationChapter 3 OPTICAL SOURCES AND DETECTORS
Chapter 3 OPTICAL SOURCES AND DETECTORS 3. Optical sources and Detectors 3.1 Introduction: The success of light wave communications and optical fiber sensors is due to the result of two technological breakthroughs.
More informationThis is a paper submitted to and accepted for publication in:
This is a paper submitted to and accepted for publication in: Mu-Chieh Lo, Robinson Guzmán, Carlos Gordón and Guillermo Carpintero. Mode-locked photonic integrated circuits for millimeter and terahertz
More informationImaging with terahertz waves
1716 OPTICS LETTERS / Vol. 20, No. 16 / August 15, 1995 Imaging with terahertz waves B. B. Hu and M. C. Nuss AT&T Bell Laboratories, 101 Crawfords Corner Road, Holmdel, New Jersey 07733-3030 Received May
More informationThis project is co-funded by. Horizon 2020 HRCP. ThoR THz end-to-end wireless systems supporting ultra-high data Rate applications.
This project is co-funded by Horizon 2020 HRCP ThoR THz end-to-end wireless systems supporting ultra-high data Rate applications Project overview Outline 1. Introduction to ThoR 2. ThoR approach 3. Hardware
More information325 to 500 GHz Vector Network Analyzer System
325 to 500 GHz Vector Network Analyzer System By Chuck Oleson, Tony Denning and Yuenie Lau OML, Inc. Abstract - This paper describes a novel and compact WR-02.2 millimeter wave frequency extension transmission/reflection
More informationPLC-based integrated devices for advanced modulation formats
ECOC 2009 workshop 7-5 Sep. 20, 2009 PLC-based integrated devices for advanced modulation formats Y. Inoue NTT Photonics Labs. NTT Corporation NTT Photonics Laboratories Hybrid integration of photonics
More informationCommunication using Synchronization of Chaos in Semiconductor Lasers with optoelectronic feedback
Communication using Synchronization of Chaos in Semiconductor Lasers with optoelectronic feedback S. Tang, L. Illing, J. M. Liu, H. D. I. barbanel and M. B. Kennel Department of Electrical Engineering,
More informationTerahertz wireless communications based on photonics technologies
Terahertz wireless communications based on photonics technologies Tadao Nagatsuma, 1,* Shogo Horiguchi, 1 Yusuke Minamikata, 1 Yasuyuki Yoshimizu, 1 Shintaro Hisatake, 1 Shigeru Kuwano, 2 Naoto Yoshimoto,
More informationLOGARITHMIC PROCESSING APPLIED TO NETWORK POWER MONITORING
ARITHMIC PROCESSING APPLIED TO NETWORK POWER MONITORING Eric J Newman Sr. Applications Engineer in the Advanced Linear Products Division, Analog Devices, Inc., email: eric.newman@analog.com Optical power
More information4 Photonic Wireless Technologies
4 Photonic Wireless Technologies 4-1 Research and Development of Photonic Feeding Antennas Keren LI, Chong Hu CHENG, and Masayuki IZUTSU In this paper, we presented our recent works on development of photonic
More informationPHASE TO AMPLITUDE MODULATION CONVERSION USING BRILLOUIN SELECTIVE SIDEBAND AMPLIFICATION. Steve Yao
PHASE TO AMPLITUDE MODULATION CONVERSION USING BRILLOUIN SELECTIVE SIDEBAND AMPLIFICATION Steve Yao Jet Propulsion Laboratory, California Institute of Technology 4800 Oak Grove Dr., Pasadena, CA 91109
More informationV-BAND QUADRATURE PHASE SHIFT KEYING DE- MODULATOR USING WR-12 SIX-PORT
Progress In Electromagnetics Research Letters, Vol. 6, 193 199, 2009 V-BAND QUADRATURE PHASE SHIFT KEYING DE- MODULATOR USING WR-12 SIX-PORT N. Khaddaj Mallat, E. Moldovan, and S. O. Tatu Université de
More informationShort Range 10 Gb/s THz Communications Proof of Concept Phase 2
AFRL-AFOSR-UK-TR-2012-0003 Short Range 10 Gb/s THz Communications Proof of Concept Phase 2 Alwyn J. Seeds University College London Department of Electronic and Electrical Engineering Torrington Place
More informationTranslational Doppler detection using direct-detect chirped, amplitude-modulated laser radar
Translational Doppler detection using direct-detect chirped, amplitude-modulated laser radar William Ruff, Keith Aliberti, Mark Giza, William Potter, Brian Redman, Barry Stann US Army Research Laboratory
More informationDirectly Chirped Laser Source for Chirped Pulse Amplification
Directly Chirped Laser Source for Chirped Pulse Amplification Input pulse (single frequency) AWG RF amp Output pulse (chirped) Phase modulator Normalized spectral intensity (db) 64 65 66 67 68 69 1052.4
More informationWhat to do with THz? Ali M. Niknejad Berkeley Wireless Research Center University of California Berkeley. WCA Futures SIG
What to do with THz? Ali M. Niknejad Berkeley Wireless Research Center University of California Berkeley WCA Futures SIG Outline THz Overview Potential THz Applications THz Transceivers in Silicon? Application
More informationDepartment of Electrical Engineering and Computer Science, Massachusetts Institute of Technology, 77. Table of Contents 1
Efficient single photon detection from 500 nm to 5 μm wavelength: Supporting Information F. Marsili 1, F. Bellei 1, F. Najafi 1, A. E. Dane 1, E. A. Dauler 2, R. J. Molnar 2, K. K. Berggren 1* 1 Department
More informationHOSAKO Iwao. Keywords Terahertz-wave, Semiconductor device, Terahertz time domain spectroscopy, Spectral database, Atmospheric propagation model
2 General Discussion: Position and Prospect of Research and Developments for the Terahertz Technology in National Institute of Information and Communications Technology (NICT) Active research and development
More informationWaveguide-based single-pixel up-conversion infrared spectrometer
Waveguide-based single-pixel up-conversion infrared spectrometer Qiang Zhang 1,2, Carsten Langrock 1, M. M. Fejer 1, Yoshihisa Yamamoto 1,2 1. Edward L. Ginzton Laboratory, Stanford University, Stanford,
More information10-Gbit/s Phase-shift Keying Modulator and Demodulator MMICs for 120-GHz-band Wireless Link
10-Gbit/s Phase-shift Keying Modulator and Demodulator MMICs for 120-GHz-band Wireless Link Hiroyuki Takahashi, Akihiko Hirata, Jun Takeuchi, Naoya Kukutsu, Toshihiko Kosugi, and Koichi Murata Abstract
More informationDirect intensity modulation of resonant-tunneling-diode terahertz oscillator up to ~30 GHz
This article has been accepted and published on J-STAGE in advance of copyediting. Content is final as presented. IEICE Electronics Express, Vol.* No.*,*-* Direct intensity modulation of resonant-tunneling-diode
More informationThe secondary MZM used to modulate the quadrature phase carrier produces a phase shifted version:
QAM Receiver 1 OBJECTIVE Build a coherent receiver based on the 90 degree optical hybrid and further investigate the QAM format. 2 PRE-LAB In the Modulation Formats QAM Transmitters laboratory, a method
More informationRADIO-OVER-FIBER TRANSPORT SYSTEMS BASED ON DFB LD WITH MAIN AND 1 SIDE MODES INJECTION-LOCKED TECHNIQUE
Progress In Electromagnetics Research Letters, Vol. 7, 25 33, 2009 RADIO-OVER-FIBER TRANSPORT SYSTEMS BASED ON DFB LD WITH MAIN AND 1 SIDE MODES INJECTION-LOCKED TECHNIQUE H.-H. Lu, C.-Y. Li, C.-H. Lee,
More informationInvestigate the characteristics of PIN Photodiodes and understand the usage of the Lightwave Analyzer component.
PIN Photodiode 1 OBJECTIVE Investigate the characteristics of PIN Photodiodes and understand the usage of the Lightwave Analyzer component. 2 PRE-LAB In a similar way photons can be generated in a semiconductor,
More informationFrequency Noise Reduction of Integrated Laser Source with On-Chip Optical Feedback
MITSUBISHI ELECTRIC RESEARCH LABORATORIES http://www.merl.com Frequency Noise Reduction of Integrated Laser Source with On-Chip Optical Feedback Song, B.; Kojima, K.; Pina, S.; Koike-Akino, T.; Wang, B.;
More informationModulation of light. Direct modulation of sources Electro-absorption (EA) modulators
Modulation of light Direct modulation of sources Electro-absorption (EA) modulators Why Modulation A communication link is established by transmission of information reliably Optical modulation is embedding
More informationExtending the Offset Frequency Range of the D2-135 Offset Phase Lock Servo by Indirect Locking
Extending the Offset Frequency Range of the D2-135 Offset Phase Lock Servo by Indirect Locking Introduction The Vescent Photonics D2-135 Offset Phase Lock Servo is normally used to phase lock a pair of
More informationCMOS based terahertz instrumentation for imaging and spectroscopy Matters - Kammerer, M.
CMOS based terahertz instrumentation for imaging and spectroscopy Matters - Kammerer, M. Published in: Proceedings of the International conference on Technology and instrumentation in particle physics
More informationBroadband Millimeter-wave FMCW Radar for Imaging of Humans
Broadband Millimeter-wave FMCW Radar for Imaging of Humans A. Dallinger, S. Schelkshorn, J. Detlefsen Technische Universität München, Lehrstuhl für Hochfrequenztechnik, Fachgebiet Hochfrequente Felder
More informationRadio Frequency Electronics (RFE)
Radio Frequency Electronics (RFE) by Prof. Dr.rer.nat. Dr.h.c. Manfred Thumm 5th Edition: 2011 Forschungszentrum Karlsruhe in der Helmholtz - Gemeinschaft Universität Karlsruhe (TH) Research University
More informationNew Focus High Speed Photoreceivers
New Focus High Speed 1 About New Focus Products Newport s New Focus products are among our most innovative, high-performance, high-quality, and easy-to-use photonics tools and equipment. They include exceptional
More informationPhase-Lock Techniques for Phase and Frequency Control of Semiconductor Lasers
Phase-Lock Techniques for Phase and Frequency Control of Semiconductor Lasers Lee Center Workshop 05/22/2009 Amnon Yariv California Institute of Technology Naresh Satyan, Wei Liang, Arseny Vasilyev Caltech
More informationSupplementary Figures
Supplementary Figures Supplementary Figure 1: Mach-Zehnder interferometer (MZI) phase stabilization. (a) DC output of the MZI with and without phase stabilization. (b) Performance of MZI stabilization
More informationDual-mode AlGaInAs/InP square microlasers for terahertz generation
Invited paper Dual-mode AlGaInAs/InP square microlasers for terahertz generation Yue-De Yang, Hai-Zhong Weng, Jin-Long Xiao, and Yong-Zhen Huang * State Key Laboratory on Integrated Optoelectronics, Institute
More information