Holographic RAM for optical fiber communications
|
|
- Jeffry Ellis
- 5 years ago
- Views:
Transcription
1 Header for SPIE use Holographic RAM for optical fiber communications Pierpaolo Boffi, Maria Chiara Ubaldi, Davide Piccinin, Claudio Frascolla and Mario Martinelli * CoreCom, Via Amp re 3, 2131-Milano, Italy * also with Dept. of Electronics and Information, Politecnico di Milano, P.za Leonardo Da Vinci 32, Milano ABSTRACT Preliminary experimentation of angle-multiplexed high-efficiency volume holograms at 155 nm is presented. It exploits two-color technique by recording digital bytes at 488 nm in iron-doped lithium niobate and retrieving them in near infrared. The stored base constitutes a first holographic memory for optical fiber communication systems. Keywords: Volume holographic memory, two-color technique, optical communication devices, infrared base 1. INTRODUCTION Volume holography stands out as having many potentialities in order to implement optical memories providing very large storage density and high speed access 1.. A 2-D page is recorded in a photorefractive medium (fig. 1a-b) through the interference of two coherent optical beams (the beam carrying out the information to be stored and the reference one). When the hologram is recorded inside a thick medium, Bragg diffraction causes the reconstruction strength to be extremely sensitive to the incidence angle of the readout beam. Many holograms, each of them constituted by a different page, can be multiplexed within the same material volume by changing the angle of the beams during recording (angle multiplexing) 2.. The superimposition of 1, holograms in a 1cm 3 volume has been demonstrated 3.. In addition to high storage density, holography exploits one of the most powerful advantages of free-space optics: the massive parallelism in signal processing operations. Conventional storage media such as magnetic hard disks and CD ROMÕs operate in a serial way, only 1 bit at a time. Instead parallel readout, inherent in holographic memories, allows reading a whole page up to 1 million bits of information 4. at a time. Some authors 5. call compact and inexpensive modules executing wide write-read functions Holographic Random Access Memory (HRAM). Furthermore, the multiplexed volume holograms constitute a base comparable in real time with an incoming page under test (fig. 1c). Optical peaks of correlation between the input and stored pages are produced in parallel providing recognition operation necessary in any hypothesis of optical signal processing 6.. On the other hand, in the last years the tremendous deployment of optics in communications has taken place. Optical fiber represents the best transmission support able to transport very high bit-rate flows. Optical communication systems operate at the wavelengths where fiber shows minimum attenuation, in particular 155nm is nowadays a standard transmission wavelength. In order to develop network nodes allowing fast processing of optical communication signals, optical devices such as addressable memories, look-up tables and digital word recognizers are needed. Volume holography could play an important role in the implementation of such devices. Unfortunately the substantial lack of photorefractive materials sensitive in near infrared region 7. has restrained the development of holography in communication devices. Correspondence: Pierpaolo Boffi boffi@corecom.it Tel Fax
2 In this paper we present preliminary experimental results of a holographic memory operating at 155nm based on two-color technique 8.. We exploit the opportunity of recording volume holograms in classical photorefractive materials by means of light at maximum sensitivity wavelengths (blue-green spectral range) and reading such holograms at different wavelengths. Stored holograms contain digital 8-bit words: each digital word recorded at 488 nm in a LiNbO 3 :Fe crystal is reconstructed by a 155nm optical beam at just one suitable readout direction. a) b) reference beam readout beam retrieved input thick medium c) correlation peaks under test Fig.1a) Recording of 2-D digital information page into a thick photorefractive material, b) retrieval of the stored digital information page and c) implementation of correlation operation between the stored base and a test page. 2. THEORETICAL PRINCIPLES As already pointed out before, volume holography offers the chance of recording multiple holograms inside the same volume of photorefractive material: in fact the additional thickness size of the storage medium is responsible for enhanced angular selectivity. Therefore only a small incidence angular range is possible for the read-out beam direction, in order to originate a diffracted signal. The well-known square-sinc law of diffraction efficiency 9. defines a relationship between η and the angular mismatch θ = θ-θ B (where θ B is the incidence angle which satisfies Bragg law) A meaningful parameter related to angular selectivity can be derived η sinc 2 ( f ( ϑ)) (1) ϑ B λ = (2) L sin( ϑ ) B
3 where θ B is the angular deviation of first zeros in diffraction efficiency curve with respect to the Bragg angle θ B, λ w the operating wavelength, L the grating effective length. Thus a rotation step during recording of at least θ B is needed to superimpose multiple holograms with negligible cross-talk (fig.2): in practice an angular separation of 4-5 times the angle to the first null of the selectivity curve is chosen normalized diffraction efficiency [%] angular mismatch [ ] Fig.2 Angular selectivity curves of two angle-multiplexed holograms separated by θ B. Besides, two-color technique allows to retrieve angle-multiplexed holograms at a wavelength different from the writing one by simply varying the incidence beam read-out angle, according to the relation λw λr = sin( ϑ + ϑ ) sin( φ + φ ) (3) where θ 1,θ 2 are respectively the incidence angles for the object and reference beam during recording at λ w (with respect to the normal to the crystal face), while φ 1, φ 2 define the directions of the read-out and diffracted beams at the new read-out wavelength λ r. In order to read out angle-multiplexed holograms at λ r, the read-out angle φ 1 must vary always satisfying Bragg condition. 3. EXPERIMENTATION The memory is stored in a -cut LiNbO 3 :Fe crystal (.15% mol doped) by means of a standard set-up for transmission recording/retrieval. An Argon laser is used to generate the coherent writing optical beams at 488 nm. The angle in air between writing beams, θ 1 +θ 2, is about 3 so that good angle selectivity in holograms retrieving at 155 nm is achieved. In order to obtain good diffraction efficiency in the near infrared, high refractive index variation has to be induced during photorefractive recording, very long recording time being consequently necessary. Figure 3b shows 7% diffraction efficiency experimented in readout at 155 nm after a 3 min recording time at 488 nm: the grating dynamic curve is reported in fig. 3a.
4 Diffraction efficiency [%] Exposure time [min] Diffraction efficiency [%] Angular mismatch [ ] a) b) Fig.3 Diffraction efficiency vs. a) exposure time during recording at 488 nm and b)angular mismatch at 155 nm. In our first experimentation four intensity-modulated (IM) digital bytes have been recorded in the holographic crystal (fig. 4). The crystal thickness (1 cm) allows to superimpose the four different holograms into the same volume, with negligible mutual interference. In order to obtain angle-multiplexing, during recording the 488 nm reference beam is rotated horizontally with respect to the crystal (.6 in rotation step). A readout beam at 155 nm interrogates the recorded base according to two-color technique (the new incident angle φ 1 is about 55 ). The stored byte corresponding to the direction which satisfies Bragg law at readout wavelength is retrieved. The stored digital bytes are space-encoded along one direction only, perpendicular to writing beams incidence plane, granting complete reconstruction of the information 8. Fig.4 Left: recording at 488 nm of angle-multiplexed bytes. Right: readout at 155 nm. The experimental results related to the implementation of such a holographic memory readable at optical fiber communication wavelengths are presented in figure 5. The picture reports the retrieved digital bytes, acquired by means of an infrared camera and reconstructed each one by the related readout direction (angular separation of the readout 155 nm beams is about.12 ).
5 Fig.5 Infrared camera acquisition of the digital bytes diffracted by.12 angle-spaced 155 nm beams. 4. CONCLUSIONS In conclusion, a highly efficient holographic memory operating at optical communication wavelengths has been preliminarily experimented. It exploits two-color technique by recording digital bytes at 488 nm and retrieving the same information at 155 nm. A compact architecture incorporating a linear array of laser diodes, liquid crystal matrix and a reduced dimension crystal (with a very large number of holograms stored inside) can implement read-write functions in real time in order to develop a realistic and low cost HRAM. Furthermore the stored volume holograms can be employed reversibly as a base for optical byte recognition, giving rise to output parallel correlation peaks corresponding to the incoming information to be checked. REFERENCES 1. D. Psaltis and F. Mok, ÒHolographic memoriesó, Sci. Am. 273, pp.7-76, X. An and D. Psaltis, ÒExperimental characterization of an angle-multiplexed holographic memoryó, Opt. Lett., 2, pp , G.W. Burr, F.H. Mok and D. Psaltis, ÒStorage of 1, holograms in LiNbO 3 :FeÓ, in Digest on Conference on Lasers and Electro-Optics 1994, Optical Society of America, Washington, D.C., paper CMB7, R.M. Shelby, J.A. Hoffnagle, G.W. Burr, C.M. Jefferson, M.P. Bernal et al., ÒPixel-matched holographic storage with megabit pagesó, Opt. Lett. 22, pp , E. Chuang, W. Liu, J. Drolet and D. Psaltis, ÒHolographic random access memory (HRAM), Proc. of the IEEE, 87, pp , G.W. Burr, S. Kobras, H. Hanssen and H. Coufal, ÒContent-addressable storage by use of volume hologramsó, Appl. Optics, 38, pp , A. Partovi, J. Millerd, E.M. Garmire, M. Ziari, W.H. Steier, S.B. Trivedi, M.B. Klein, ÒPhotorefractivity at 1.5 µm in CdTe:VÓ, Appl. Phys. Lett. 57, pp , E. Chuang, D. Psaltis, ÒStorage of 1 holograms with use of a dual-wavelength methodó, Appl. Opt. 36, pp , P. Yeh, Introduction to photorefractive nonlinear optics, John Wiley & Sons, 1993.
All-optical pattern recognition for digital real-time information processing
All-optical pattern recognition for digital real-time information processing Pierpaolo Boffi, Davide Piccinin, Maria Chiara Ubaldi, and Mario Martinelli To recognize digital streams of digital data, all-optical
More information4-2 Image Storage Techniques using Photorefractive
4-2 Image Storage Techniques using Photorefractive Effect TAKAYAMA Yoshihisa, ZHANG Jiasen, OKAZAKI Yumi, KODATE Kashiko, and ARUGA Tadashi Optical image storage techniques using the photorefractive effect
More informationDeveloping characteristics of Thermally Fixed holograms in Fe:LiNbO 3
Developing characteristics of Thermally Fixed holograms in Fe:LiNbO 3 Ran Yang *, Zhuqing Jiang, Guoqing Liu, and Shiquan Tao College of Applied Sciences, Beijing University of Technology, Beijing 10002,
More informationLarge scale rapid access holographic memory. Geoffrey W. Burr, Xin An, Fai H. Mokt, and Demetri Psaltis. Department of Electrical Engineering
Large scale rapid access holographic memory Geoffrey W. Burr, Xin An, Fai H. Mokt, and Demetri Psaltis Department of Electrical Engineering California Institute of Technology, MS 116 81, Pasadena, CA 91125
More informationThe Photorefractive Effect
The Photorefractive Effect Rabin Vincent Photonics and Optical Communication Spring 2005 1 Outline Photorefractive effect Steps involved in the photorefractive effect Photosensitive materials Fixing Holographic
More informationHolographic 3D disks using shift multiplexing. George Barbastathist, Allen Put, Michael Levene, and Demetri Psaltis
Holographic 3D disks using shift multiplexing George Barbastathist, Allen Put, Michael Levene, and Demetri Psaltis t Department of Electrical Engineering 1: Department of Computation and Neural Systems
More informationExposure schedule for multiplexing holograms in photopolymer films
Exposure schedule for multiplexing holograms in photopolymer films Allen Pu, MEMBER SPIE Kevin Curtis,* MEMBER SPIE Demetri Psaltis, MEMBER SPIE California Institute of Technology 136-93 Caltech Pasadena,
More informationStorage of 1000 holograms with use of a dual-wavelength method
Storage of 1000 holograms with use of a dual-wavelength method Ernest Chuang and Demetri Psaltis We demonstrate the storage of 1000 holograms in a memory architecture that makes use of different wavelengths
More informationParallel Associative Search by use of a Volume Holographic Memory*
Parallel Associative Search by use of a Volume Holographic Memory* Xiaochun Li', Fedor Dimov, William Phillips, Lambertus Hesselink, Robert McLeod' Department of Electrical Engineering, Stanford University,
More informationElectronically switchable Bragg gratings provide versatility
Page 1 of 5 Electronically switchable Bragg gratings provide versatility Recent advances in ESBGs make them an optimal technological fabric for WDM components. ALLAN ASHMEAD, DigiLens Inc. The migration
More informationAMONG THE TECHNIQUES that have been envisaged
832 IEEE JOURNAL OF SELECTED TOPICS IN QUANTUM ELECTRONICS, VOL. 4, NO. 5, SEPTEMBER/OCTOBER 1998 Volume Holographic Storage Demonstrator Based on Phase-Coded Multiplexing Cornelia Denz, Kai-Oliver Müller,
More informationBalancing interpixel cross talk and detector noise to optimize areal density in holographic storage systems
Balancing interpixel cross talk and detector noise to optimize areal density in holographic storage systems María-P. Bernal, Geoffrey W. Burr, Hans Coufal, and Manuel Quintanilla We investigate the effects
More informationTransmitting Light: Fiber-optic and Free-space Communications Holography
1 Lecture 9 Transmitting Light: Fiber-optic and Free-space Communications Holography 2 Wireless Phone Calls http://havilandtelconews.com/2011/10/the-reality-behind-wireless-networks/ 3 Undersea Cable and
More informationCompensation of hologram distortion by controlling defocus component in reference beam wavefront for angle multiplexed holograms
J. Europ. Opt. Soc. Rap. Public. 8, 13080 (2013) www.jeos.org Compensation of hologram distortion by controlling defocus component in reference beam wavefront for angle multiplexed holograms T. Muroi muroi.t-hc@nhk.or.jp
More informationGerhard K. Ackermann and Jurgen Eichler. Holography. A Practical Approach BICENTENNIAL. WILEY-VCH Verlag GmbH & Co. KGaA
Gerhard K. Ackermann and Jurgen Eichler Holography A Practical Approach BICENTENNIAL BICENTENNIAL WILEY-VCH Verlag GmbH & Co. KGaA Contents Preface XVII Part 1 Fundamentals of Holography 1 1 Introduction
More informationCoding tradeoffs for high density holographic data storage
SPIE Conference on Advanced Optical Memories and Interfaces to Computer Systems II July 1999 Paper 382 6 Proceedings of the SPIE, Vol. 382, pp. 18 29 (1999). Coding tradeoffs for high density holographic
More informationA novel tunable diode laser using volume holographic gratings
A novel tunable diode laser using volume holographic gratings Christophe Moser *, Lawrence Ho and Frank Havermeyer Ondax, Inc. 85 E. Duarte Road, Monrovia, CA 9116, USA ABSTRACT We have developed a self-aligned
More informationHolographic Random Access Memory (HRAM)
Holographic Random Access Memory (HRAM) ERNEST CHUANG, WENHAI LIU, JEAN-JACQUES P. DROLET, ASSOCIATE MEMBER, IEEE, AND DEMETRI PSALTIS, SENIOR MEMBER, IEEE Invited Paper We examine the present state of
More informationIntegrated Photonics based on Planar Holographic Bragg Reflectors
Integrated Photonics based on Planar Holographic Bragg Reflectors C. Greiner *, D. Iazikov and T. W. Mossberg LightSmyth Technologies, Inc., 86 W. Park St., Ste 25, Eugene, OR 9741 ABSTRACT Integrated
More informationConfocal Imaging Through Scattering Media with a Volume Holographic Filter
Confocal Imaging Through Scattering Media with a Volume Holographic Filter Michal Balberg +, George Barbastathis*, Sergio Fantini % and David J. Brady University of Illinois at Urbana-Champaign, Urbana,
More informationOpto-VLSI-based reconfigurable photonic RF filter
Research Online ECU Publications 29 Opto-VLSI-based reconfigurable photonic RF filter Feng Xiao Mingya Shen Budi Juswardy Kamal Alameh This article was originally published as: Xiao, F., Shen, M., Juswardy,
More informationHolographic Data Storage Systems
Holographic Data Storage Systems LAMBERTUS HESSELINK, SERGEI S. ORLOV, AND MATTHEW C. BASHAW Invited Paper In this paper, we discuss fundamental issues underlying holographic data storage: grating formation,
More informationRead/Write Holographic Memory versus Silicon Storage
Invited Paper Read/Write Holographic Memory versus Silicon Storage Wenhai Liu, Ernest Chuang and Demetri Psaltis* Department of Electrical Engineering California Institute of technology Pasadena, CA 91125
More informationHolography for information storage and processing
SPIE Conference on Wave Optics and Photonic Devices for Optical Information Processing II August 7, 2003 Paper 5181 10 Holography for information storage and processing Geoffrey W. Burr IBM Almaden Research
More informationCompact Holographic Data Storage System
Compact Holographic Data Storage System Tien-Hsin Chao Tien-Hsin.Chao@jpl.nasa.gov, Voice: +1 818 354-8614, Fax: +1 818 393-1545 Hanying Zhou Hanying.Zhou@jpl.nasa.gov, Voice: +1 818 354-0502, Fax: +1
More informationPhotonics and Optical Communication
Photonics and Optical Communication (Course Number 300352) Spring 2007 Dr. Dietmar Knipp Assistant Professor of Electrical Engineering http://www.faculty.iu-bremen.de/dknipp/ 1 Photonics and Optical Communication
More informationWavelength Stabilization of HPDL Array Fast-Axis Collimation Optic with integrated VHG
Wavelength Stabilization of HPDL Array Fast-Axis Collimation Optic with integrated VHG C. Schnitzler a, S. Hambuecker a, O. Ruebenach a, V. Sinhoff a, G. Steckman b, L. West b, C. Wessling c, D. Hoffmann
More informationTranslation-invariant object recognition system using an optical correlator and a superparallel holographic random access memory
45 2, 025201 February 2006 Translation-invariant object recognition system using an optical correlator and a superparallel holographic random access memory Alexander Heifetz John T. Shen Jong-Kwon Lee
More informationDynamic optical comb filter using opto-vlsi processing
Research Online ECU Publications Pre. 2011 2006 Dynamic optical comb filter using opto-vlsi processing Zhenglin Wang Kamal Alameh Rong Zheng Chung Poh This article was originally published as: Wang, Z.,
More informationLOS 1 LASER OPTICS SET
LOS 1 LASER OPTICS SET Contents 1 Introduction 3 2 Light interference 5 2.1 Light interference on a thin glass plate 6 2.2 Michelson s interferometer 7 3 Light diffraction 13 3.1 Light diffraction on a
More informationMultispectral Image Capturing System Based on a Micro Mirror Device with a Diffraction Grating
Multispectral Image Capturing System Based on a Micro Mirror Device with a Diffraction Grating M. Flaspöhler, S. Buschnakowski, M. Kuhn, C. Kaufmann, J. Frühauf, T. Gessner, G. Ebest, and A. Hübler Chemnitz
More informationBeam shaping for holographic techniques
Beam shaping for holographic techniques Alexander Laskin a, Vadim Laskin a, Aleksei Ostrun b a AdlOptica GmbH, Rudower Chaussee 29, 12489 Berlin, Germany b St. Petersburg National Research University of
More informationABSTRACT 1. INTRODUCTION
High spectral contrast filtering produced by multiple pass reflections from paired Bragg gratings in PTR glass Daniel Ott*, Marc SeGall, Ivan Divliansky, George Venus, Leonid Glebov CREOL, College of Optics
More informationRadial Polarization Converter With LC Driver USER MANUAL
ARCoptix Radial Polarization Converter With LC Driver USER MANUAL Arcoptix S.A Ch. Trois-portes 18 2000 Neuchâtel Switzerland Mail: info@arcoptix.com Tel: ++41 32 731 04 66 Principle of the radial polarization
More informationSelf-organizing laser diode cavities with photorefractive nonlinear crystals
Institut d'optique http://www.iota.u-psud.fr/~roosen/ Self-organizing laser diode cavities with photorefractive nonlinear crystals Nicolas Dubreuil, Gilles Pauliat, Gérald Roosen Nicolas Huot, Laurent
More informationCharacterization of High Resolution Photographic Emulsion BB640 by Holographic Methods
24 International Symposium on Silver Halide Technology Characterization of High Resolution Photographic Emulsion BB64 by Holographic Methods M. Ulibarrena, L. Carretero, S. Blaya, R. Madrigal and A. Fimia
More informationStable dual-wavelength oscillation of an erbium-doped fiber ring laser at room temperature
Stable dual-wavelength oscillation of an erbium-doped fiber ring laser at room temperature Donghui Zhao.a, Xuewen Shu b, Wei Zhang b, Yicheng Lai a, Lin Zhang a, Ian Bennion a a Photonics Research Group,
More informationBEAM SHAPING OPTICS TO IMPROVE HOLOGRAPHIC AND INTERFEROMETRIC NANOMANUFACTURING TECHNIQUES Paper N405 ABSTRACT
BEAM SHAPING OPTICS TO IMPROVE HOLOGRAPHIC AND INTERFEROMETRIC NANOMANUFACTURING TECHNIQUES Paper N5 Alexander Laskin, Vadim Laskin AdlOptica GmbH, Rudower Chaussee 9, 89 Berlin, Germany ABSTRACT Abstract
More informationHolographic data storage using photopolymer
Invited Paper Holographic data storage using photopolymer Ken Y. Hsu, Shiuan-Huei Lin, Wha Tzong Whang1, and Wei Zheng Chen1 Institute of Electro-Optical Engineering 1lnstitute of Materials Science and
More informationElena Fernández, Celia García, Inmaculada Pascual, Manuel Ortuño, Sergi Gallego, and Augusto Beléndez
Optimization of a thick polyvinyl alcohol acrylamide photopolymer for data storage using a combination of angular and peristrophic holographic multiplexing Elena Fernández, Celia García, Inmaculada Pascual,
More informationInvited Paper. recording. Yuri N. Denisyuk, Nina M. Ganzherli and Irma A. Maurer
Invited Paper Thick-layered light-sensitive dichromated gelatin for 3D hologram recording Yuri N. Denisyuk, Nina M. Ganzherli and Irma A. Maurer loffe Physico-Technical Institute of the Academy of Sciences
More informationARCoptix. Radial Polarization Converter. Arcoptix S.A Ch. Trois-portes Neuchâtel Switzerland Mail: Tel:
ARCoptix Radial Polarization Converter Arcoptix S.A Ch. Trois-portes 18 2000 Neuchâtel Switzerland Mail: info@arcoptix.com Tel: ++41 32 731 04 66 Radially and azimuthally polarized beams generated by Liquid
More informationThin holographic camera with integrated reference distribution
Thin holographic camera with integrated reference distribution Joonku Hahn, Daniel L. Marks, Kerkil Choi, Sehoon Lim, and David J. Brady* Department of Electrical and Computer Engineering and The Fitzpatrick
More informationS-band gain-clamped grating-based erbiumdoped fiber amplifier by forward optical feedback technique
S-band gain-clamped grating-based erbiumdoped fiber amplifier by forward optical feedback technique Chien-Hung Yeh 1, *, Ming-Ching Lin 3, Ting-Tsan Huang 2, Kuei-Chu Hsu 2 Cheng-Hao Ko 2, and Sien Chi
More informationTera-Hz Radiation Source by Deference Frequency Generation (DFG) and TPO with All Solid State Lasers
Tera-Hz Radiation Source by Deference Frequency Generation (DFG) and TPO with All Solid State Lasers Jianquan Yao 1, Xu Degang 2, Sun Bo 3 and Liu Huan 4 1 Institute of Laser & Opto-electronics, 2 College
More informationThe Lightwave Model 142 CW Visible Ring Laser, Beam Splitter, Model ATM- 80A1 Acousto-Optic Modulator, and Fiber Optic Cable Coupler Optics Project
The Lightwave Model 142 CW Visible Ring Laser, Beam Splitter, Model ATM- 80A1 Acousto-Optic Modulator, and Fiber Optic Cable Coupler Optics Project Stephen W. Jordan Seth Merritt Optics Project PH 464
More informationCompact beam expander with linear gratings
Compact beam expander with linear gratings Revital Shechter, Yaakov Amitai, and Asher A. Friesem Novel compact beam expanders that could be useful for applications such as providing light to flat panel
More informationRECENT ADVANCES OF WIDE BAND MAGNETO-OPTICAL MODULATORS IN ADVANCED HIGH SPEED OPTICAL COMMUNICATION SYSTEM
International Journal of Engineering and Management Research, Vol., Issue-, April 01 ISSN No.: 50-0758 Pages: 14- www.ijemr.net RECENT ADVANCES OF WIDE BAND MAGNETO-OPTICAL MODULATORS IN ADVANCED HIGH
More informationFull Color Holographic Optical Element Fabrication for Waveguide-type Head Mounted Display Using Photopolymer
Journal of the Optical Society of Korea Vol. 17, No. 3, June 2013, pp. 242-248 DOI: http://dx.doi.org/10.3807/josk.2013.17.3.242 Full Color Holographic Optical Element Fabrication for Waveguide-type Head
More informationPixel size and pitch measurements of liquid crystal spatial light modulator by optical diffraction
PRAMANA c Indian Academy of Sciences Vol. 65, No. 2 journal of August 2005 physics pp. 291 296 Pixel size and pitch measurements of liquid crystal spatial light modulator by optical diffraction RAVINDER
More informationPolarization Experiments Using Jones Calculus
Polarization Experiments Using Jones Calculus Reference http://chaos.swarthmore.edu/courses/physics50_2008/p50_optics/04_polariz_matrices.pdf Theory In Jones calculus, the polarization state of light is
More informationDIGITAL HOLOGRAPHY USING A PHOTOGRAPHIC CAMERA
5th International Conference on Mechanics and Materials in Design REF: A0126.0122 DIGITAL HOLOGRAPHY USING A PHOTOGRAPHIC CAMERA Jaime M. Monteiro 1, Hernani Lopes 2, and Mário A. P. Vaz 3 1 Instituto
More informationParallel Digital Holography Three-Dimensional Image Measurement Technique for Moving Cells
F e a t u r e A r t i c l e Feature Article Parallel Digital Holography Three-Dimensional Image Measurement Technique for Moving Cells Yasuhiro Awatsuji The author invented and developed a technique capable
More informationarxiv: v1 [physics.optics] 2 Nov 2012
arxiv:1211.0336v1 [physics.optics] 2 Nov 2012 Atsushi Shiraki 1, Yusuke Taniguchi 2, Tomoyoshi Shimobaba 2, Nobuyuki Masuda 2,Tomoyoshi Ito 2 1 Deparment of Information and Computer Engineering, Kisarazu
More informationLow-Density Parity-Check Codes for Volume Holographic Memory Systems
University of Massachusetts Amherst From the SelectedWorks of Hossein Pishro-Nik February 10, 2003 Low-Density Parity-Check Codes for Volume Holographic Memory Systems Hossein Pishro-Nik, University of
More informationPhysics of Waveguide Photodetectors with Integrated Amplification
Physics of Waveguide Photodetectors with Integrated Amplification J. Piprek, D. Lasaosa, D. Pasquariello, and J. E. Bowers Electrical and Computer Engineering Department University of California, Santa
More informationTrue%Analog%Non-Mechanical%Beam%Steering%Using%Liquid%Crystal% Waveguide%Techniques%
True%Analog%Non-Mechanical%Beam%Steering%Using%Liquid%Crystal% Waveguide%Techniques% Scott Davis, Scott Rommel, Mike Anderson, Derek Gann Vescent Photonics, 14998 W. 6 th Ave., Golden, CO 80401 The world
More information3550 Aberdeen Ave SE, Kirtland AFB, NM 87117, USA ABSTRACT 1. INTRODUCTION
Beam Combination of Multiple Vertical External Cavity Surface Emitting Lasers via Volume Bragg Gratings Chunte A. Lu* a, William P. Roach a, Genesh Balakrishnan b, Alexander R. Albrecht b, Jerome V. Moloney
More informationRotation/ scale invariant hybrid digital/optical correlator system for automatic target recognition
Rotation/ scale invariant hybrid digital/optical correlator system for automatic target recognition V. K. Beri, Amit Aran, Shilpi Goyal, and A. K. Gupta * Photonics Division Instruments Research and Development
More informationSimple interferometric fringe stabilization by CCD-based feedback control
Simple interferometric fringe stabilization by CCD-based feedback control Preston P. Young and Purnomo S. Priambodo, Department of Electrical Engineering, University of Texas at Arlington, P.O. Box 19016,
More informationAnalysis of Tilted Grating Etalon for DWDM Demultiplexer
Analysis of Tilted Grating Etalon for DWDM Demultiplexer 71 Analysis of Tilted Grating Etalon for DWDM Demultiplexer Sommart Sang-Ngern, Non-member and Athikom Roeksabutr, Member ABSTRACT This paper theoretically
More informationPhotonic dual RF beam reception of an X band phased array antenna using a photonic crystal fiber-based true-time-delay beamformer
Photonic dual RF beam reception of an X band phased array antenna using a photonic crystal fiber-based true-time-delay beamformer Harish Subbaraman, 1 Maggie Yihong Chen, 2 and Ray T. Chen 1, * 1 Microelectronics
More informationPhotonic Crystal Slot Waveguide Spectrometer for Detection of Methane
Photonic Crystal Slot Waveguide Spectrometer for Detection of Methane Swapnajit Chakravarty 1, Wei-Cheng Lai 2, Xiaolong (Alan) Wang 1, Che-Yun Lin 2, Ray T. Chen 1,2 1 Omega Optics, 10306 Sausalito Drive,
More informationEffects of Photographic Gamma on Hologram Reconstructions*
1650 JOURNAL OF THE OPTICAL SOCIETY OF AMERICA VOLUME 59. NUMBER 12 DECEMBER 1969 Effects of Photographic Gamma on Hologram Reconstructions* J AMES C. WYANT AND M. PA RKER G IVENS The Institute of Optics,
More informationDiffraction Single-slit Double-slit Diffraction grating Limit on resolution X-ray diffraction. Phys 2435: Chap. 36, Pg 1
Diffraction Single-slit Double-slit Diffraction grating Limit on resolution X-ray diffraction Phys 2435: Chap. 36, Pg 1 Single Slit New Topic Phys 2435: Chap. 36, Pg 2 Diffraction: bending of light around
More informationHOLOGRAPHIC DATA STORAGE
A Technical Seminar On HOLOGRAPHIC DATA STORAGE Presented by Mr. Roll # CS200118027 Under the Guidance of Mr. Rabindra Kumar Shial Magnetic and conventional optical data storage technologies are approaching
More informationWhere m is an integer (+ or -) Thus light will be spread out in colours at different angles
Diffraction Gratings Recall diffraction gratings are periodic multiple slit devices Consider a diffraction grating: periodic distance a between slits Plane wave light hitting a diffraction grating at angle
More informationHolography as a tool for advanced learning of optics and photonics
Holography as a tool for advanced learning of optics and photonics Victor V. Dyomin, Igor G. Polovtsev, Alexey S. Olshukov Tomsk State University 36 Lenin Avenue, Tomsk, 634050, Russia Tel/fax: 7 3822
More informationResearch Article A Polymer Film Dye Laser with Spatially Modulated Emission Controlled by Transversely Distributed Pumping
Optical Technologies Volume 2016, Article ID 1548927, 4 pages http://dx.doi.org/10.1155/2016/1548927 Research Article A Polymer Film Dye Laser with Spatially Modulated Emission Controlled by Transversely
More informationA Visual Indication of Environmental Humidity Using a Colour Changing Hologram Recorded in a Self-developing Photopolymer
Dublin Institute of Technology ARROW@DIT Articles Centre for Industrial and Engineering Optics 2008-01-23 A Visual Indication of Environmental Humidity Using a Colour Changing Hologram Recorded in a Self-developing
More informationDynamic Optical Tweezers using Acousto-Optic Modulators
Author: Facultat de Física, Universitat de Barcelona, Avinguda Diagonal 645, 08028 Barcelona, Spain. Advisors: Estela Martín Badosa and Mario Montes Usategui Abstract: This work consists of the study,
More informationA high-resolution fringe printer for studying synthetic holograms
Publication : SPIE Proc. Practical Holography XX: Materials and Applications, SPIE#6136, San Jose, 347 354(2006). 1 A high-resolution fringe printer for studying synthetic holograms K. Matsushima a, S.
More informationR. J. Jones College of Optical Sciences OPTI 511L Fall 2017
R. J. Jones College of Optical Sciences OPTI 511L Fall 2017 Active Modelocking of a Helium-Neon Laser The generation of short optical pulses is important for a wide variety of applications, from time-resolved
More informationPhysics 3340 Spring 2005
Physics 3340 Spring 2005 Holography Purpose The goal of this experiment is to learn the basics of holography by making a two-beam transmission hologram. Introduction A conventional photograph registers
More informationSynthesis of projection lithography for low k1 via interferometry
Synthesis of projection lithography for low k1 via interferometry Frank Cropanese *, Anatoly Bourov, Yongfa Fan, Andrew Estroff, Lena Zavyalova, Bruce W. Smith Center for Nanolithography Research, Rochester
More informationHigh Performance Data Storage via Volume Holography William L. Wilson InPhase Technologies 2000 Pike Road, Longmont Co 80501
High Performance Data Storage via Volume Holography William L. Wilson InPhase Technologies 2000 Pike Road, Longmont Co 80501 Phone: +1-720-494-7429 FA: +1-720-494-9606 E-mail: WilliamWilson@inphase-tech.com
More informationLocalized Holographic Recording in doubly doped Lithium Niobate
Localized Holographic Recording in doubly doped Lithium Niobate Christophe Moser*, Benjamin Schupp, Irena Maravic,Demetri Psaltis California Institute of Technology Department ofelectrical Engineering,Pasadena,
More informationRing cavity tunable fiber laser with external transversely chirped Bragg grating
Ring cavity tunable fiber laser with external transversely chirped Bragg grating A. Ryasnyanskiy, V. Smirnov, L. Glebova, O. Mokhun, E. Rotari, A. Glebov and L. Glebov 2 OptiGrate, 562 South Econ Circle,
More informationDesign of a digital holographic interferometer for the. ZaP Flow Z-Pinch
Design of a digital holographic interferometer for the M. P. Ross, U. Shumlak, R. P. Golingo, B. A. Nelson, S. D. Knecht, M. C. Hughes, R. J. Oberto University of Washington, Seattle, USA Abstract The
More informationSPRAY DROPLET SIZE MEASUREMENT
SPRAY DROPLET SIZE MEASUREMENT In this study, the PDA was used to characterize diesel and different blends of palm biofuel spray. The PDA is state of the art apparatus that needs no calibration. It is
More informationElectronically tunable fabry-perot interferometers with double liquid crystal layers
Electronically tunable fabry-perot interferometers with double liquid crystal layers Kuen-Cherng Lin *a, Kun-Yi Lee b, Cheng-Chih Lai c, Chin-Yu Chang c, and Sheng-Hsien Wong c a Dept. of Computer and
More informationReflection holograms in a PVA/AA photopolymer: Several compositions
Reflection holograms in a PVA/AA photopolymer: Several compositions Rosa Fuentes* Elena Fernández, Celia García and Inmaculada Pascual Dpto. Óptica, Farmacología y Anatomía, Universidad de Alicante, Apartado
More informationHolographic Data Storage Seminar 04 INTRODUCTION
INTRODUCTION Mass memory systems serve computer needs in both archival and backup needs. There exist numerous applications in both the commercial and military sectors that require data storage with huge
More informationAchievement of Arbitrary Bandwidth of a Narrow Bandpass Filter
Achievement of Arbitrary Bandwidth of a Narrow Bandpass Filter Cheng-Chung ee, Sheng-ui Chen, Chien-Cheng Kuo and Ching-Yi Wei 2 Department of Optics and Photonics/ Thin Film Technology Center, National
More informationFiber coupled diode laser of high spectral and spatial beam quality with kw class output power
Fiber coupled diode laser of high spectral and spatial beam quality with kw class output power Christian Wessling, Martin Traub, Dieter Hoffmann Fraunhofer Institute for Laser Technology, Aachen, Germany
More informationHolographic Data Storage
Holographic Data Storage Tien-Hsin chao Jet Propulsion Laboratory 4800 Oak Grove Drive, Pasadena California, 91109 Phone:+818-354-8614 FAX: +818-354-1545 E-mail: Tien-Hsin.Chao@jpl.nasa.gov Presented at
More informationDefense Technical Information Center Compilation Part Notice
UNCLASSIFIED Defense Technical Information Center Compilation Part Notice ADPO11531 TITLE: Evanescent - Wave Recording in Very Thin Layers DISTRIBUTION: Approved for public release, distribution unlimited
More informationImportant performance parameters when considering lasers for holographic applications
Important performance parameters when considering lasers for holographic applications E.K. Illy*, H. Karlsson & G. Elgcrona. Cobolt AB, a part of HÜBNER Photonics, Vretenvägen 13, 17154, Stockholm, Sweden.
More informationMode analysis of Oxide-Confined VCSELs using near-far field approaches
Annual report 998, Dept. of Optoelectronics, University of Ulm Mode analysis of Oxide-Confined VCSELs using near-far field approaches Safwat William Zaki Mahmoud We analyze the transverse mode structure
More informationfor holographic interferometry
Experiments with photorefractive crystals for holographic interferometry Robert Magnusson, MEMBER SPIE Xuqun Wang* Au Hafiz University of Texas at Arlington Department of Electrical Engineering Arlington,
More informationWavelength-controlled hologram-waveguide modules for continuous beam-scanning in a phased-array antenna system
Waveleng-controlled hologram-waveguide modules for continuous beam-scanning in a phased-array antenna system Zhong Shi, Yongqiang Jiang, Brie Howley, Yihong Chen, Ray T. Chen Microelectronics Research
More informationSuperimposed surface-relief diffraction grating holographic lenses on azo-polymer films
Superimposed surface-relief diffraction grating holographic lenses on azo-polymer films Ribal Georges Sabat * Department of Physics, Royal Military College of Canada, PO Box 17000 STN Forces, Kingston,
More informationHOLOGRAPHIC DATA storage
HOLOGRAPHIC DATA storage abstract Devices that use light to store and read data have been the backbone of data storage for nearly two decades. Compact disc revolutionized data storage in the early 1980s,
More informationSpherical Beam Volume Holograms Recorded in Reflection Geometry for Diffuse Source Spectroscopy
Spherical Beam Volume Holograms Recorded in Reflection Geometry for Diffuse Source Spectroscopy Sundeep Jolly A Proposal Presented to the Academic Faculty in Partial Fulfillment of the Requirements for
More informationLongitudinal mode selection in laser cavity by moiré volume Bragg grating
Longitudinal mode selection in laser cavity by moiré volume Bragg grating Daniel Ott* a, Vasile Rotar a, Julien Lumeau a, Sergiy Mokhov a, Ivan Divliansky a, Aleksandr Ryasnyanskiy b, Nikolai Vorobiev
More informationOptical monitoring technique based on scanning the gain profiles of erbium-doped fiber amplifiers for WDM networks
Optics Communications () 8 www.elsevier.com/locate/optcom Optical monitoring technique based on scanning the gain profiles of erbium-doped fiber amplifiers for WDM networks Chien-Hung Yeh *, Chien-Chung
More informationDiffraction, Fourier Optics and Imaging
1 Diffraction, Fourier Optics and Imaging 1.1 INTRODUCTION When wave fields pass through obstacles, their behavior cannot be simply described in terms of rays. For example, when a plane wave passes through
More informationAn Optical Characteristic Testing System for the Infrared Fiber in a Transmission Bandwidth 9-11μm
An Optical Characteristic Testing System for the Infrared Fiber in a Transmission Bandwidth 9-11μm Ma Yangwu *, Liang Di ** Center for Optical and Electromagnetic Research, State Key Lab of Modern Optical
More informationWavelength Division Multiplexing of a Fibre Bragg Grating Sensor using Transmit-Reflect Detection System
Edith Cowan University Research Online ECU Publications 2012 2012 Wavelength Division Multiplexing of a Fibre Bragg Grating Sensor using Transmit-Reflect Detection System Gary Allwood Edith Cowan University
More information3B SCIENTIFIC PHYSICS
3B SCIENTIFIC PHYSICS Equipment Set for Wave Optics with Laser U17303 Instruction sheet 10/08 Alf 1. Safety instructions The laser emits visible radiation at a wavelength of 635 nm with a maximum power
More information