High-Speed Polarimeter - PolaDetect™
The POD-201 is an FPGA powered in-line polarimeter specially designed for high-speed polarization analysis and monitoring. The instrument uses four channels to simultaneously obtain the four Stokes parameters and measure the instantaneous state of polarization (SOP) and degree of polarization (DOP) of an input light beam. A USB 2.0 interface enables data to be transferred directly to a computer at a rate up to 30 MB/s. Thanks to the high speed FPGA electronics, this polarimeter easily monitors and analyzes fast polarization changes with a sampling rate of up to 4MS/s. The POD-201 comes with PolaView™ software for real-time graphic display of polarization state either on a Poincaré Sphere window for viewing SOP traces or on an oscilloscope window for monitoring polarization changes over time. It can be quickly and easily calibrated using its built-in self-calibration program to optimize DOP and SOP accuracies at special wavelengths and temperatures. With a suitable light source and measurement techniques, it can be used to measure polarization extinction ratio (PER) to aid in aligning PM fiber to laser sources. The POD-201 replaces the POD-101D, with higher sampling speed and larger optical input power range. New features include long-term SOP monitoring, SOP markers for angle measurement, extended triggering capability in oscilloscope mode, an OLED display for easy setup and data display and a configurable analog SOP/DOP/power output for easy integration with automated test systems. The POD-201 is available in two configurations: a two-port inline version to monitor a signal without interruption, and a one-port remote head option that can accommodate free-space inputs.
Applications:
100G system polarization test
SOP/DOP monitoring
Polarization analysis
Scrambler DOP characterization
SOP statistics
PM fiber alignment to light sources
Unique Features:
polarization sampling rate4 MHz
Up to 1 MHz analog bandwidth
Real time Poincaré Sphere display
Continuous measurement External trigger
Long term polarization monitoring
PER measurement
Specifications
Operating Wavelength Range1 1480 - 1620 nm or 1280 – 1340nm Analog Bandwidth2 1 MHz Sampling Rate (max) 4.0M SOP samples/s SOP Uncertainty3 ± 0.25° after user calibration DOP Uncertainty3 ± 2% using built-in calibration
± 0.5% after user calibration
PER Measurement Range3 0 to 40 dB PER Resolution 0.1 dB Insertion Loss 1.2 dB max. at center wavelength Return Loss 55 dB (APC connector), 45 dB (PC connector) PDL <0.25 dB PMD <0.1 ps Aperture Size (remote head) 2.5mm Operating Power Range −35 to +10 dBm (2-port in-line) Optical Power Uncertainty3 ± 0.25 dB Optical Power Damage Threshold 300 mW Operating Temperature 0 °C to 40 °C Storage Temperature −20 °C to 60 °C Front panel display OLED Graphic Display Communication Interfaces High Speed USB 2.0 (30 MB/s data rate)- PolaView RS-232, GPIB, Ethernet Analog Output 0 to 5V max range, user configurable Monitor voltage for DOP, S1, S2, S3, or power
Power Supply 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)
Notes: Unless otherwise noted, specifications listed in table apply for standard in-line configurations with 1480 - 1620nm or 1280-1340nm wavelengths at 23±5 °C. Loss specifications are referenced without connectors.
1. Other wavelengths may be possible Contact General Photonics for details.
2. For input power >−10 dBm for 2-port in-line version. At lower power levels, bandwidth may change due to automatic gain control.
3. For input power >−25 dBm for 2-port in-line version.
Ordering Information:
POD-201-I-15-FC/APC In-line Polarimeter. Wavelength Range: 1480 to 1620 nm. FC/APC connectors (Other connector types available).
POD-201-I-13-FC/APC In-line Polarimeter. Wavelength Range: 1280 to 1340 nm. FC/APC connectors (Other connector types available).
商品属性 [波长] 1480 - 1620 nm or 1280 – 1340nm [带宽] 1 MHz [采样率] 4.0M SOP samples/s [PDL] <0.25 dB [PMD] <0.1 ps