Home Optical T&M Polarisation Control & Emulation General Photonics PSY-201 – Polarisation Synthesizer/Analyser

General Photonics PSY-201 – Polarisation Synthesizer/Analyser

Product Code:
PSY-201
Manufacturer: General Photonics Corporation
  • Up to 4M samples/s
  • 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
  • Data logging of SOPs changes up to 1 billion point

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The General Photonics PSY-201 generates and maintains any state of polarisation (SOP), regardless of the input SOP. It combines General Photonics’ patented controller, polarimeter, and control algorithms into an instrument that functions as both an SOP generator and a polarisation analyser.

The generated SOP and the corresponding Poincaré representation are displayed on a PC via USB interface. Output SOP can be defined by Stokes parameters, by manually tuning the SOP to any point on the Poincaré sphere or by optimising a polarisation-dependent metric. Once a desired output SOP is found, the instrument maintains the SOP against input SOP fluctuations.

The user can generate 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.

The PSY-201 contains programmed SOP traces of common polarisation variations. It can also function as a polarisation scrambler, generating SOP scans with user-defined parameters and, with the internal polarisation controller disabled, it can function as an in-line polarimeter, displaying the instantaneous SOP and DOP of the input light beam.

The PSY-201 also features data logging function for long term measurement of polarisation changes of up to 1 billions points.

APPLICATIONS

  • Polarisation Sensitivity Analysis of Receivers
  • Monitoring of SOP
  • Polarisation Generation and Stabilisation
  • Sensor System Characterisation
  • 100G System Characterisation

PSY-201 APPLICATION EXAMPLE

Sample setup for a coherent receiver performance test using a polarisation stabiliser (POS-202) and a polarisation synthesizer (PSY-201).

  1. Use polarisation stabiliser (POS-202) to lock the polarisation of one receiver input (local oscillator input).
  2. Use polarisation synthesizer (PSY-201) to control the polarisation of the other receiver input to find the SOP that maximises the receiver power reading.
  3. Lock the PSY-201 output at that SOP to eliminate polarisation fluctuations in the SM fibre. Test receiver performance.
  4. Use PSY-201 to find or switch to the orthogonal SOP (minimise receiver power reading).
  5. Lock PSY-201 output at that SOP to eliminate polarisation fluctuations. Test receiver performance.

PSY201 Demonstration from General Photonics on Vimeo.

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 dBm

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 PolaViewsoftware, RS-232, Ethernet, GPIB

Analog Output

0 to 5 V max range, user configurable

Monitor voltage for DOP, S1, S2, S3, power or dREF

Power Supply

100 – 240 VAC, 50 – 60 Hz

Software

PolaView™ (included)

Dimensions

2U, 19” half rack width 14" (L) x 8.5" (W) x 3.5" (H)

Notes:

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.

1 For input power > -10 dBm. At lower power levels, bandwidth may change due to automatic gain control.

 

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