PSY-201
Polarization Synthesizer/Analyzer

The PSY-201 is a deterministic polarization controller that can generate and maintain any state of polarization (SOP), regardless of the input SOP. It combines General Photonics’ patented polarization controller, in-line polarimeter, and control algorithm into an instrument that functions as both a polarization state generator and a polarization analyzer.
The generated SOP and the corresponding Poincaré Sphere representation can be displayed on a computer screen via USB interface.
The output SOP can be specified by inputting Stokes parameters using the front panel keypad or by manually tuning the SOP to reach a specific point
on the Poincaré sphere or to reach an optimum value of a polarization-dependent metric. Once a desired output SOP is found, the instrument can automatically maintain this SOP against input SOP fluctuations.
Another attractive feature is that the user can generate any of 6 distinct SOPs (0°, 90°, ± 45°, RHC and LHC) for Mueller matrix calculations, or select any of the 6 states at the touch of a button. Furthermore, the instrument can generate several preprogrammed SOP traces that emulate certain common polarization variations. The instrument can also function as a polarization scrambler, generating SOP scans with user-defined pattern and speed.
Finally, with the internal polarization controller disabled, PolaFlex™ can function as an in-line polarimeter, displaying the instantaneous SOP and DOP of the input light beam. Features include long-term SOP monitoring, SOP markers for angle measurement, and a "SOP replay" function in sphere display mode, as well as extended triggering capability in oscilloscope mode. It puts all of the tools necessary for polarization management at your fingertips.

PSY 201

Figure 1 : PSY-201 Polarization Synthesizer/Analyzer

Key Features
• 4 MHz SOP sampling rate
• 1 MHz analog bandwidth
• 45 dB input power dynamic range
• Real-time Poincaré Sphere display
• High-speed SOP generation and tracking
• High speed analog output of SOP & DOP

Applications
• Receiver polarization sensitivity analysis
• System SOP/DOP monitoring
• PER measurement
• Polarization generation and stabilization
• Sensor system characterization
• 100G system polarization characterization

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