The NRT-250 is a versatile Polarization Tracker designed for OEM integration and sub-system.

July 12, 2016


The NRT-250 uses the same integrated-optic Lithium Niobate (LiNbO3) waveguide polarization-controller device for super-fast polarization response as its lab unit cousin the NRT-2500. The NRT-250’s Tracker is FPGA driven making it even faster than the NRT-2500.


Fast Robust and Endless Polarization NRT’s unique tracking algorithm enables virtually perfect SOP tracking with no dropouts or ‘glitches’ for your new applications and  prototypes.  The NRT-2500’s open architecture allows you to optimize the performance for your specific application:

  1. Create  a  unique  error  signal  from  four A/D  converter inputs,
  2. Optimize algorithm parameters with Tracker’s ‘Optimizer’ program.

New Ridge has leveraged many years of experience in the Tracker. And has packaged it all together for you. The Tracker’s technology is so robust, it has been incorporated in multiple systems and qualified for network deployment at a number of carriers worldwide.

1111111  tracker

Simple Tracker demo set-up                            Tracker on the Poincaré Sphere




Example Applications

1.  Optical Polarization Demultiplexing

2.  Optical polarization demuxing or power combining

3. Coherent detection

4.  Optical PMD compensation


Key Specifications

Insertion Loss < 3 dB
PDL < 0.3 dB
Optical Return Loss > 50 dB
Optical Power Handling < 20 dBm
Operating Wavelength 1.55 µm (C + L Band), 1.3 µm (O Band), 1.0 µm
Optical Connectors FC/APC, FC/APC, SC, LC
Tracking Speed (closed loop) < 15 µsec
Power Inputs ± 65V, ± 5V, 3.3V
Communication RS-232, various digital interfaces per customer requirements
Dimensions 2” x 10.5” or customization per customer requirements

Do you have a OEM polarization control problem or function the NRT-250 can solve?

Then please contact us to discuss implementation.

For more information, please contact New Ridge Technologies:

[email protected] or call: +1-410-753-3055


Datasheet Download


NRT-250-PS (power supply)

The NRT-250-PS is a custom power supply unit to independently power the NRT-250. It can be purchased as an accessory when ordering the NRT-250.