Tunable high power laser Integrated wavelength monitoring Descrip

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Tunable high power laser Integrated wavelength monitoring Descrip

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Alcatel 1935
Tunable high power laser Integrated wavelength monitoring
Description Alcatel 1935 contains Alcatel SLMQW laser designed with external modulation. This module designed high power DWDM applications with spacing between channels down without using external locker. module integrates wavelength monitoring function order allow wavelength stabilization over product lifetime. package pinout product stays compatible with previous series (Alcatel 1905LMI) without integrated wavelength monitoring tuneability function, order avoid complete redesign existing boards. choice analog output control signal will leave freedom user lock wavelength either with digital analog circuit. Also, wavelength tuning over different wavelengths offered which makes inventory reduction possible, lowering cost. module incorporates also polarization maintaining fiber pigtail, thermoelectric cooler, precision thermistor, optical isolator stable operation under conditions.
Features Integrated Fabry-Perot Etalon wavelength monitoring (replaces external lockers) eight ITU-T channels tuneability 20mW output power channels spacing available High reliability InGaAsP Buried Ridge Structure laser chip with outstanding long term wavelength stability Optimized with LiNbO3 external modulator Internal optical isolator Internal power monitoring photodiode Polarization Maintaining Fiber pigtail
Applications Ultra Long Haul DWDM SONET/SDH transmission system DWDM submarine terminal Instrumentation
Electro-Optic Characteristics
Parameter Threshold current Optical output power Laser forward voltage Laser forward current (BOL) Laser chip temp. range wavelength tunability Spectral width Side mode suppression current voltage Thermistor resistance Thermistor temperature coefficient Relative Intensity Noise TE/fiber Extinction Ratio Symb. SMSR PF=10mW; PF=20mW; FWHM (1), (1), 25°C Conditions Units dB/Hz
10.3 -140
Note limits start life (except Vt), Tsubmount=25°C, Tcase=25°C, V=-5V Tcase=70°C (for 10&20mW), Tsubmount=0°C, @1.2 Tchip=T chip temperature required meet target wavelength
Wavelength monitoring section
photodiodes used ensure both optical power monitoring wavelength monitoring. first (power monitoring) referenced monitoring photodiode (PDmon) whereas second (wavelength monitoring) referenced filter photodiode (PDfilt). Symb. Power Monitoring Photodiode current Filter Monitoring photodiode current Photodiodes dark current Center wavelength Wavelength stability over lifetime Wavelength capture range Tunable channels Wavelength deviation between adjacent channels Filter slope (normalized maximum PDfilt current) Electrical responsivity ratio between power monitoring channel filter monitoring channel IPDmon IPDfilt Idark NITU grid +2.5 Unit nm-1
Absolute maximum ratings
Exposing device stresses above those listed absolute maximum rating could cause permanent damage. Exposure absolute maximum rating conditions extended periods affect device reliability.
Environmental
Parameter Storage temperature Operating temperature (for 10mW 20mW versions) Soldering temperature seconds maximum) Axial force fiber seconds max.) Fiber bend radius applied detector (Pin 4&5) other Human body model 2000 Unit
Electro-optic
Parameter Laser forward current Laser reverse voltage Photodiode forward current Photodiode reverse voltage Thermistor Voltage Thermistor Current Voltage Current Packing Mounting Torque Unit
dimensions
20.8 Rigid 31,5 Optical fiber length
1.78
maxi
Keyed FC/PC connector
15.2 12.7
12.7
5.95 1.25 1.85 14x(0.5x0.2±0.06) 6x2.54 1.48 17.84
allocation
Description Thermistor Thermistor Bias Power Monitoring Anode Common Power Monitoring Monitoring Cathode Cooler Cooler Case Ground Case Ground Monitoring anode common Laser input common Connect
2001 Copyright 2000 Alcatel Optronics Customized versions available large quantities. Performance figures contained this document must specifically confirmed writing Alcatel Optronics before they become applicable particular order contract. Alcatel Optronics reserves right make changes products information contained herein without notice. printed version this document uncontrolled copy.
EUROPE Route Villejust F-91625 NOZAY CEDEX (+33) (+33) 15036, Conference Centre Drive CHANTILLY 20151 (+1) 3600 (+1) 6667 CANADA Villebois, suite Gatineau (PQ) Canada, (+1) 3755 (+1) 3354 JAPAN Yebisu Garden Place Tower 5024 20-3, Ebisu Chome Shibuya TOKYO 6028 (+81) 5424 (+81) 5424
Standards
ITU-T.652 optical fiber 68-2 environment
LASER RADIATION AVOID EXPOSURE BEAM Class laser product
ATTENTION OBSERVE PRECAUTIONS HANDLING ELECTROSTATIC DISCHARGE SENSITIVE DEVICES

Tunable high power laser Integrated wavelength monitoring Descrip

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