Multifunction Polarization Controller?PolaMight?
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Multifunction Polarization Controller—PolaMight™ MPC-201 Controlling the state of polarization (SOP) of an optical signal has never been easier: This multifunction polarization controller has four operational modes for complete polarization control: variable rate polarization scrambling, manual polarization adjustment, polarization modulation, and externally triggered random SOP generation. Four different polarization scrambling methods enable the SOP to a) trace out a spiral pattern about a static or rotating axis with a nearly uniform SOP variation rate for system stress tests (Tornado scrambling); b) generate a continuous trace with a Rayleigh distribution of SOP variation rate, for emulation of the SOP variation in a fiber link (Rayleigh scrambling); c) generate a continuous trace with uniform sphere coverage for PDL measurement (Triangle scrambling); or d) evenly cover the Poincaré sphere with discrete, random points at a uniform rate (Discrete scrambling). In the SOP modulation mode, each polarization control axis can be selectively controlled with a sine, square, or triangle wave of user defined frequency and amplitude. Each polarization control axis can also be controlled manually, by setting the input voltage either from the front panel controls or through a remote control interface. In externally triggered scrambling mode, discrete, random SOPs are generated in response to a trigger input, a feature desirable for recirculating loop applications or other applications requiring synchronization with other devices. Finally, the MPC-201 can emulate the Agilent 11896A polarization scrambler function, allowing it to act as a plug-in replacement for this popular but discontinued device, while offering many more advanced features. PolaMight puts the user in control. General Photonics Corp. 5228 Edison Ave. Chino, CA 91710 Tel: 909.590.5473 Fax: 909.902.5536 Preliminary Specifications Operating Wavelength Range Polarization Scrambling Discrete random states: 0.00 to 20,000 points/s Triangle: 0.00 to 2000 × 2π rad/s Rayleigh rate distribution: 0.00 to 2000 rad/s (mean) Tornado (quasi-uniform rate distribution): 0.00 to 2000 revolutions/s. Agilent 11896A Scrambling Emulation Speed settings 1-8, matched to Agilent 11896A settings Manual Polarization Control Email: info@generalphotonics.com Polarization Modulation (each channel) # of channels: 4 Range: 0 - 4π each channel Waveforms: Sine, Triangle, Square Frequency: 0.00 to 1000 Hz Amplitude: 0 to 3π peak-to-peak Return Loss > 50 dB with connectors (> 70 dB intrinsic) Optical Power Handling Operating Temperature Storage Temperature Communication Interfaces Electrical Triggers Connectors: BNC Output trigger: TTL pulse per SOP generated in discrete scrambling mode Input trigger: One random SOP generated per TTL pulse received in trigger mode Front Panel Display OLED graphic display Power Supply 2U, 19” half rack width 3.5”(H) x 8.5” (W) x 14” (L) PMD emulation Polarization scrambling System polarization studies PDL/DOP measurement Recirculating loop studies < 0.5 dB with connectors (< 0.1 dB intrinsic) Random SOP per TTL trigger pulse, up to 20,000 points/s Insertion Loss Website: www.generalphotonics.com External Trigger Mode Notes: Specifications in this table apply for the standard 1260-1650nm version over a temperature range of 25±5°C. 1. A low PDL/activation loss version (0.01 dB intrinsic) is available upon request for PDL measurement applications. Unique Features: Multiple polarization control modes Tornado scrambling (quasi-uniform rate distribution) Real fiber SOP variation emulation (Rayleigh rate distribution) Discrete SOP scrambling Agilent 11896A scrambling emulation SOP modulation Low IL, PDL, PMD, and AL Bright OLED display

Multifunction Polarization Controller—PolaMight™ (a) (b) (c) (d) Figure 1. Poincaré sphere SOP traces for four different scrambling methods: (a) Discrete, (b) Typical Rayleigh or Triangle trace, (c) Tornado (fixed axis), and (d) Tornado (rotating axis). General Photonics Corp. 5228 Edison Ave. Chino, CA 91710 Tel: 909.590.5473 Fax: 909.902.5536 Email: info@generalphotonics.com (a) (b) (c) Figure 2. SOP variation rate distributions for (a) Rayleigh, (b) Triangle, and (c) Tornado scrambling methods. Website: www.generalphotonics.com (a) (b) (c) (d) Figure 3. (a) Manual adjustment of SOP from...