CWDM DFB Laser Module with 3 GHz Bandwidth (LT-CWDM-3-M)

Data Sheet

Product Overview

The Optilab LT-CWDM-3-M series of products are CWDM Distributed Feedback (DFB) laser sources in a module housing, designed for general laboratory applications. The LT-CWDM-3-M is a reliable and cost effective DFB laser source for providing a variety of CWDM wavelengths, from 1270nm up to 1610nm. With its simple and intuitive panel interface, the user can control the DFB light source output power level by adjusting the laser drive current, with USB monitoring, as well as provide up to 3 GHz direct modulation RF signal, all enclosed with its inclusive AC/DC power supply. Contact Optilab for more information.


  • L-Band RFoF link
  • Multiple wavelength CWDM RFoF
  • Laboratory test and measurement
  • CWDM component qualification


  • Modulation RF signal up to 3 GHz
  • Wavelengths from 1270nm up to 1610nm
  • Adjustable laser drive current
  • USB interface remote monitoring

Feature Name Description
Technical Specifications
Available Wavelength Selection CWDM, 1270 nm - 1610 nm See attached table 1.0
Center Wavelength Accuracy ±2.5 nm
Output Power Level 2 mW typ.
Output Power Stability ±0.3 dB over 8 hours
Wavelength Accuracy ±200 pm over 8 Hours
Laser Linewidth 3 MHz typ., < 1 MHz is available
Side Mode Suppression Ratio 30 dB typ.
Optical Isolation 30 dB typ.
Relative Intensity Noise (RIN) +43 dB/Hz typ. max.
Adjustable Features and Output
DFB Power Output 10 -100% adjustable range
RF Modulator Bandwidth 3 GHz max.
Mechanical Specifications
Operating Temperature 10 ºC to +60 ºC
Storage Temperature -65 ºC to +85 ºC
Operating Humidity 0% to 85% Relative Humidity
Power Supply 120/220 VAC, 50/60 Hz
Power Consumption 5 W max.
Dimensions 150 x 114 x 30 mm
Control / Monitoring LD Current, Output Power
Remote Control USB
Optical Connectors FC/APC; Other options are available
Optical Fiber Type SMF-28
RF Connector SMA female
Accessories included USB cable

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