Polarization Synthesizer/Analyzer – PolaFlex™
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. The PSY-201 replaces the popular PSY-101, with improved accuracy, speed, and functionalities. New 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.
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
Specifications:
Operating Wavelength Range 1480 to 1620 nm or 1280 to 1340 nm Sampling Rate (max.) 4.0M SOP samples/s Analog Bandwidth1 1MHz SOP Settling Time 1ms at stable input SOP
SOP Stability (Input Power > -25 dBm,DOP > 95%) 0.1° with stable input SOP
0.5° with input SOP variation < 2 π/s
2° with input SOP variation < 10 π/s
SOP Measurement/Generation Uncertainty ±0.25° after user calibration, with input > -25 dBm
DOP Uncertainty ±2% using built-in calibration, with input > -25 dBm
±0.5% after user calibration, with input > -25 d
Input Stokes Parameter Resolution 0.001 Optical Power Uncertainty ±0.25 dB Insertion Loss 1.6 dB max. at center wavelength Return Loss 55 dB (APC connector),45 dB (PC connector) PDL < 0.25 dB PMD < 0.1 ps Operating Power Range -35 dBm to +10 dBm Optical Power Damage Threshold 300 mW Operating Temperature 0 °C to 40 °C Storage Temperature -20 °C to 60 °C Front Panel Display Graphic OLED Communication Interfaces High Speed USB 2.0 (30 MB/s data rate) for PolaView software RS-232, Ethernet, GPIB Analog Output 0 to 5 V max range, user configurable Power Supply Monitor voltage for DOP, S1, S2, S3, power or dREF 100 – 240 VAC, 50 – 60 Hz Software PolaViewTM (included) Dimensions 2U, 19” half rack width 14" (L) x 8.5" (W) x 3.5" (H) Note: Loss specifications are referenced without connectors. Unless otherwise noted, specifications listed in table apply for standard 1480-1620nm or 1280-1340nm operation at 23±5°C, at power levels >-25 dBm.
Application Example:
Coherent Receiver Polarization Sensitivity Test
1. Use polarization stabilizer (POS-202) to lock the polarization of one receiver input (local oscillator input).
2. Use polarization synthesizer (PSY-201) to control the polarization of the other receiver input to find the SOP that maximizes the receiver power reading.
3. Lock the PSY-201 output at that SOP to eliminate polarization fluctuations in the SM fiber. Test receiver performance.
4. Use PSY-201 to find or switch to the orthogonal SOP (minimize receiver power reading).
5. Lock PSY-201 output at that SOP to eliminate polarization fluctuations. Test receiver performance. Sample setup for a coherent receiver performance test using a polarization stabilizer (POS-202) and a polarization synthesizer (PSY-201).
Typical Performance Data:
Ordering Information:
商品属性 [波长] 1480 to 1620 nm or 1280 to 1340 nm [带宽] 1MHz [采样率] 4.0M SOP samples/s [PDL] < 0.25 dB [PMD] < 0.1 ps