Multi-Wavelength Meter AQ6141 Perfect for Wavelength Analysis in DWDM Systems
Multi-Wavelength Meter AQ6141 Perfect for Wavelength Analysis in Wavelength Division Multiplexing (WDM) transmission enables multichannel transmission with wider bandwidth for higher capacity optical communication. This has lead to an increasing demand for measurement equipment featuring high wavelength accuracy. The AQ6141 Multi-Wavelength Meter, with its excellent wavelength accuracy and resolvable separation measurement, answers this demand, making it ideal for a whole range of applications from DWDM system development to manufacturing. And the AQ6141 also features a new measurement function to determine narrow bandpass filter center wavelength to high accuracy. Features High wavelength accuracy: ±0.3 pm (at 1550 nm) Realizes highly precise measurement utilizing a wavelength-stabilized He- Ne laser as the reference light source for higher resolution analysis. Narrow bandpass filter center wavelength can be measured with high accuracy. High resolvable separation Can separate, recognize and measure two wavelength signals as close as 5 GHz (minimum, 1550 nm: 40 pm). Measurement capacity of up to 512 channels Able to measure each wavelength by analyzing multiplied signals (up to 512 channels). LD evaluation at 980 nm band Capable of measurement in the 900 to 1680 nm wavelength range by switching measurement modes, while standard wavelength measurement ranges from 1270 to 1680 nm. 6.5-inch color display Can check waveform data and peak wavelength at the one time by displaying waveforms and measurement data simultaneously. Complete functions for monitoring WDM light source Complete functions for stability analysis of light source such as variable rate 3D display, long term function, trap function, etc. Complete memory functions Can record measurement results and measurement conditions on floppy disk and in the internal memory. 2
DWDM Systems Principle of Measurement Movable mirror Wavelength stabilized He-Ne Laser Reference light source Beam splitter The light reflected from the fixed mirror interferes with that reflected from the movable mirror. Fixed mirror Input light PD1 PD2 Interference stripe waveform FFT A/D CRT Power (dbm) Level (V) Spectrum analysis function Time Peak Frequency Conversion to Frequency (wavelength) Fint-in Flot-in: optical frequency of input light Flot-in = x optical Flot-ref Fint-ref Fint-in: frequency of input light interference wave Fint-ref: frequency of reference light interference wave c Flot-ref: frequency of reference light λopt-in = λopt-in: optical wavelength of input light Flot-in c: light velocity WDM Transmission Concept Terminal station (Transmission side) Terminal station (Reception side) multiplexer ADM de-multiplexer 3
Multi-Wavelength Meter AQ6141 Applications Characteristic evaluation of light source for WDM Measures both wavelength and power up to 512 channels, and displays waveform and measurement results simultaneously. Capable of checking correlation with ITU-T advice and close monitoring of grid. Can also display a list of peak wavelength and power. Terminal station (Transmission side) multiplexer Filter center wavelength measurement function This is a new function. Can measure pass center wavelength of passive devices such as narrow bandpass filters, etc. ASE Light Source AQ4315A Multi-Wavelength Meter AQ6141 AWG Center wavelength of gauss distribution-type filters Center wavelength of flat-top type filters 4
Long-term function Displays changes in peak wavelength and power for one channel. The waveforms below, display not only current measurement results but also maximum rate, minimum rate, or the relationships between the two. Wavelength change Power change Grid check function Analyzes peak wavelength of set grid. Searches peak wavelength or analyzes wavelength gap and changes of power within the grid. Wavelength correlates with ITU-T grid. Wavelength doesn t correlate with ITU-T grid. ITU-T grid wavelength 5
Multi-Wavelength Meter AQ6141 Applications Standard screen The waveform and the peaks are display simultaneously on this standard screen. It is used to monitor WDM system temperature characteristics and evaluate laser oscillators. List screen This mode displays a list of the peak wavelengths, up to 14 at a time. 3D display screen Displays 3D waveforms and peak lists at a time. It helps to check the change of measurement result by time. Marker screen The marker function simplifies tasks such as analysis of wavelength and power level difference. 6
Specifications Applicable fiber SM (10/125 µm) Wavelength Wavelength range 900 to 1680 nm (178.470 to 333.144 THz) Wavelength accuracy 1) ±0.2 ppm (1270 to 1680 nm, 1550 nm; ±0.3 pm) ±0.4 ppm (900 to 1680 nm, 980 nm; ±0.4 pm) Minimum resolvable separation 2) 5 GHz or less (1550 nm; 40 pm, equal power line input) Display resolution 0.0001 nm Power Power accuracy ±0.5 db (1310/1550±30 nm) Level linearity ±0.3 db (1270 to 1600 nm, input: -30 dbm or more) Polarization depending loss 2) ±0.5 db (1270 to 1600 nm) ±1.0 db (900 to 1270 nm, 1600 to 1680 nm) Display resolution 0.001 db Maximum number of line input 512 Minimum input level 1270 to 1600 nm: -40 dbm (1 line input) 1600 to 1680 nm: -30 dbm (1 line input) Maximum input level +10 dbm (total of all lines) Safe max. input level +18 dbm (total of all lines) Return loss 35 db (PC) SN ratio 35 db (noise band width: 0.1 nm, input: -25 dbm or more, spacing 100 GHz) Measurement time 3) Within 1.0 sec. ( for one measurement) Memory Internal Can memorize 10 measurement results and conditions Floppy disk (3.5-inch 2HD) Internal hard disk drive Interfaces GP-IB GP-IB (IEEE. 488.2) Display RS-232C Printer port connector 4) VGA monitor Power requirements Environmental conditions Dimensions and mass Can memorize measurement results and conditions 9MB: can memorize measurement results and conditions 9-pin D-sub 25-pin D-sub (centronics) 15-pin D-sub 6.5-inch color LCD (640 x 480 dots) AQ9441 (FC) Universal Adapter AC 100 to 120/200 to 240 V, 48 to 63 Hz, approx. 150 VA Operation temperature: 10 to 30 C, storage temperature: -20 to +60 C, humidity: 85 % RH or less (at 40 C, no condensation) Approx. 425 (W) x 133 (H) x 450 (D) mm, approx. 16 kg Accessories Power cord: 1 (with 3/2 terminal conversion plug), Instruction manual: 1 Notes: 1) After 30 minutes warming up, line spacing: 30 GHz or more, multiple-line input, according to Ando's measurement procedures. 2) Characteristics data may be varied depending on equipment. 3) In REPEAT measurement 4) FC: standard. Also compatible with SC, ST, DIN and DIA. 7
Ando Electric Co., Ltd. 3-484, Tsukagoshi, Saiwai-ku, Kawasaki, Kanagawa, 212-8519 Japan Phone: +81 (0)44 549 7300 Fax: +81 (0)44 549 7450 Specifications are subject to change without notice. Ando Corporation 20420 Century Boulevard Germantown, MD 20874, U.S.A. Phone: +1 301 916 0409 Fax: +1 301 916 1498 SAN JOSE OFFICE: 2021 N. Capitol Avenue, San Jose, CA 95132, U.S.A. Phone: +1 408 941 0100 Fax: +1 408 941 0103 Ando Europe B.V. Vijverdam, Dalsteindreef 57, 1112XC Diemen, The Netherlands Phone: +31(0)20 698 1441 Fax: +31(0)20 699 8938 NIEDERLASSUNG DEUTSCHLAND: Nymphenburger Straße 119 B, D-80636 München, Germany Phone: +49(0)89 143 8150 Fax: +49(0)89 143 81555 Ando Electric Singapore Pte. Ltd. 19 Kim Keat Road #05-03, Fu Tsu Building, Singapore 328804 Phone: +65 251 1391 Fax: +65 251 1987 Please visit our website for more information: www.ando.com KT-1913-1 0109 KL250 Printed in Japan