Polarization Control Platform

Optics & Photonics | Test & Measurement | PM Fiber, Polarisation

The Luna NRT-2500 is a versatile Polarization Control Platform, offering seven built-in polarization control functions for optical transponder, device and sub-system development and manufacturing.

Polarization Control Platform - NRT-2500

Polarization Control Platform - NRT-2500


The NRT-2500 combines an integrated-optic Lithium Niobate (LiNbO3) waveguide polarization-controller device for super-fast polarization response driven by a customizable digital signal processing for functional flexibility. Together they enable Luna to provide a seven different polarization functions: Acquirer, Depolarizer, Paddles, Randomizer, Scrambler, Spinner, and Tracker in a single bench-top instrument.

Product information

Key Features

  • Paddles(Set Polarization) – Full polarization control by rotating any of the 5 electro-optic 1⁄4-wave plates to achieve the desired SOP setting with high accuracy, repeatability and resolution.
  • Scrambler -Uniform polarization scrambling with full Poincaré Sphere coverage and user-selectable Rayleigh distribution scrambling rates.
  • Depolarizer– A single-speed, ultrafast random scrambling mode to reduce the degree of polarization (DOP) of the measured signal or to introduce an extremely fast ΔSOP Impulses for lightning simulation and loop testbeds.
  • Spinner – Superfast SOP rotations/scrambling up to 940,000 rad/sec for characterizing the new generation coherent PM-QPSK transceivers.
  • Tracker – Fast, robust, and endless polarization tracking with no dropouts or ‘glitches’.
  • Acquirer – Acquirer is the automated ‘smart’ paddles mode to drive the SOP to maximize or minimize a feedback signal.


  • Optical Polarization Demultiplexing
  • PMD tolerance testing of transponders
  • Optical polarization demuxing
  • Testing electronic pol-demux
  • Optical PMD compensation
  • Coherent detection
  • Detector calibration
  • Ultrafast ∆SOP/∆t event generation
  • Power combining


Insertion loss< 3dB
PDL< 0.3 dB
Optical return loss> 50dB
Optical power handling<20 dBm
Operating wavelength1.55 microns (C- and L-bands)
Optical connectorsFC/UPC, FC/APC, SC
Scrambling mode (SOP speed distribution) parameters2rmode≡b0.5 < 3,400 radians/second, with ≡1.25 rmode, rmax~3.76 rmode
Enhanced spinner mode rate75kHz (or >470,000 rad/sec for SOP aligned in S1-S2 plane)
SOP slew speed~1.4 microseconds (up to 1,500,000 rad/sec)3
Tracking speed (closed loop in tracking mode)~20 microseconds4
Power supply12 VDC from 100-240 VAC, 50-60 Hz wall AC-DC converter
Communication interfaceEthernet, RS-232
DimensionsH=4.04" (102.6mm) W=10.12" (257mm) D= 12.32" (313mm)

Are you interested in this solution?

Call +41 41 748 60 22
or send us a chat message.

You may also be interested in