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Instruments |
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DSP In-Line Polarimeter
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Product Summary
The POD-101D is a DSP (digital signal processor) 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 simple USB interface enables data to be transferred directly to a computer without
the need for any additional hardware. Thanks to the high speed DSP electronics, this polarimeter easily monitors and analyzes fast polarization
changes with a sampling rate of up to 625 kS/s. The POD-101D 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 tracking polarization changes over time.
The oscilloscope window has three operation modes: continuous scan mode, for instantaneous display of various polarization parameters;
external trigger mode, for capturing transient events; and long term monitoring mode, for recording only the polarization changes
above a predetermined threshold, in order to save hard drive space. The POD-101D is ideal for PMD compensation,
polarization stabilization, system polarization monitoring, polarization analysis, and sensor analysis.
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Features
- Up to 625 KS/s polarization sampling rate
- Analog bandwidth up to 1MHz
- Real time Poincaré Sphere display
- Continuous scan mode
- External trigger mode
- Long term monitoring mode
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Applications
- PMD monitoring and compensation
- SOP/DOP monitoring
- Polarization analysis
- Polarization stabilization
- Sensor systems
- Optical SNR monitoring/measurement
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Specifications
| Operating Wavelength Range1 |
1480 - 1620 nm |
| Analog Bandwidth |
100 kHz or
1 MHz |
| Sampling Rate |
625 KS/s max., user selectable |
| SOP Accuracy2, 3 |
1% max. |
| DOP Accuracy2, 3 |
± 2% |
| PER Measurement Range |
0 to 40 dB |
| PER Resolution |
0.1 dB |
| Insertion Loss |
1.2 dB max. at 1550nm |
| Return Loss |
55 dB |
| PDL |
<0.25 dB |
| PMD |
<0.1 ps |
| Operating Power Range |
−35 to +10 dBm |
| Optical Power Accuracy |
± 0.25 dB |
| Optical Power Damage Threshold |
500 mW |
| Operating Temperature |
0° to 40° C |
| Storage Temperature |
−20° to 60° C |
| Computer Interface |
USB 2.0 |
| Electrical Power Supply |
100-120VAC, 50-60
Hz or
200-240VAC, 50-60
Hz |
| Software |
PolaView™ (included) |
| Dimensions |
2U 19" half rack
width
3.5" (H) x 8.5"(W) x
14"(L) |
Notes: Loss specifications are referenced without connectors.
1.
Other wavelengths may be possible. Contact General Photonics for
details.
2. Compared with Agilent 8509C polarization
analyzer.
3. At calibrated wavelength, 64-pt
average, power >−25 dBm for 100 kHz bandwidth or >−15 dBm for 1
MHz bandwidth.
4. Display spot on Poincaré Sphere
will have solid angle < 2° for 64-pt average, with stationary
input polarization.
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