Luna NRT-2500 Polarisation Control Platform

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.

Applications

• General lab use
• Coherent receiver and DSP testing
• PLD and Si-Photonic device testing
• Testing lightning effects on coherent communication systems
• Directed energy, Coherent Beam Combination, LIDAR system prototyping

Overview

Luna's industry-leading polarization control platform combines an integrated-optic Lithium Niobate (LiNbO3) waveguide polarization-controller device for super-fast polarization response driven by customizable digital signal processors and field programmable gate arrays (DSPs/FPGAs) for full functional flexibility. Together they enable Luna to provide an unprecedented seven polarization operations in one product.

For more information about Luna’s NRT-2500, see the data sheet attached.

Specifications

² For a Rayleigh distribution: r_mode is the statistical mode of the distribution, <r> is the mean SOP change, and 99.9% of all SOP changes occur before r_max=3<r>~3.76 r_mode

³ For π/2 radian SOP transitions in 1μs.

⁴  This speed is feedback/update algorithm loop time based on reading A/DCs and DESP speed and updating polarization controller voltages. The feedback signal level and customization of the algorithm  may slow system response. 

For full specifications, please download the data sheet.