DFB Laser Source Module, Polarization Maintaining (DFB-PM-M)

Data Sheet

Product Overview

The Optilab DFB-PM-M is a Distributed Feedback (DFB) Polarization Maintaining (PM) laser source module. It is designed for integration with optical modualtor to form hign bandwidth analog or digital photonics link. The DFB-PM-M can be ordered from more than 20 wavelengths in C-band and O-band. The DFB laser’s operating temperature and output power are precisely controlled to ensure constant wavelength stability and power stability. The DFB-PM-M is designed to work with Optilab Compact Modulator w/ Bias Control (CMB) for RFoF application. Using its USB interface, the user can control the laser drive current and wavelength via PC interface. Contact Optilab for more information.


  • Light source 40G RFoF analog link
  • External modulated DWDM networks
  • Seed Oscillator laser for MOPA
  • Laboratory testing and measurement
  • HFC fiber link


  • Polarization Maintaining (PM) output
  • Laser linewidth 500 KHz is available
  • Relative Intensity Noise (RIN) of -145 dB/Hz
  • Up to 40 mW output
  • Wavelength stability to ±10 pm
  • Over 20 wavelengths available
  • RS-485 or USB interface
  • Wavelength tuning range: ±1.0 nm
  • Power adjustment: 10 % to 100 %

Feature Name Description
Technical Specifications
Available Wavelength Range O-band: 1290-1350 nm; C-band: 1528-1564 nm; See attached Table 1.0
Wavelength Accuracy ±50 pm max.
Output Power Level 10 mW, 20 mW, 30 mW, 40 mW
Output Power Stability ±0.2 dB over 8 hours
Wavelength Accuracy ±10 pm over 8 Hours
Laser Linewidth 2 MHz typ., 500 KHz is available
Side Mode Suppression Ratio 40 dB typ.
Optical Isolation 30 dB typ.
Relative Intensity Noise (RIN) -145 dB/Hz min., -155 dB/Hz available.
Polarization Extinction Ratio 20 dB typ.
Adjustable Features and Output
DFB Power Output 10 -100% adjustable range
DFB Wavelength Tuning (optional) ±1.0 nm (from wavelength center)
Mechanical Specifications
Operating Temperature 10 ºC to +50 ºC
Operating Temperature (TQ Version) -55 ºC to +70 ºC
Storage Temperature -65 ºC to +85 ºC
Operating Humidity 0% to 85% Relative Humidity
Power Supply 5 V DC, 500 mA
Power Consumption 5 W max.
Dimensions 150 x 40 x 6 mm
Control / Monitoring LD Current, Laser Wavelength
Remote Control RS-485 or USB
Optical Connectors FC/APC; Other options are available
Optical Fiber Type PANDA for PM Output
Accessories included USB cable, power supply

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