Luna NRT 250
Discontinued NRT-250

Polarization Tracker


The Luna NRT-250 uses the same innovative integrated-optic Lithium Niobate (LiNbO3) waveguide polarization-controller device for super-fast polarization response as the NRT-2500, but the NRT-250’s Tracker is field-programmable gate array (FPGA)-driven, creating an even faster device.

Product Description

With fast, robust, endless polarization, Luna's unique tracking algorithm enables virtually perfect SOP tracking with no dropouts or ‘glitches’ for your new applications and  prototypes, and its open architecture allows you to optimize the performance for your specific application, whether it's creating  a  unique  error  signal  from  four A/D  converter inputs or optimizing algorithm parameters with Tracker’s optimizer program.

  • Specifications
    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
    Tracking speed (closed loop in tracking mode)<15 µsec
    Power inputs± 65V, ± 5V, 3.3V
    Communication interfaceRS-232, various digital interfaces per customer requirements
    Dimensions2” x 10.5” or customization per customer requirements

    For full specifications, please download the data sheet.

  • Key Features
    • Very fast and reliable polarization tracking 
    • Analog or digital electrical feedback signaling
    • Tracks to maximize or minimize feedback signal 
    • Custom footprint, features and applications possible
    • Standard wavelength 1550nm (C&L bands), other 1310nm and 1060nm available upon request

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