Polarization Scrambler Module with Microprocessor Controller
eneral Photonics’ Polarization Scrambler module uses a breakthrough all-fiber technology to effectively randomize polarization states. This module is designed to be easily plugged into sensor equipment or measurement instruments with minimal development effort. Its advanced digital circuitry delivers uniform SOP distribution over a wide operation temperature range, making it a good choice for sensor field applications. The PCD-005 can be remote controlled via RS-232 to set the operation wavelength or enable/disable the scrambling operation.The PCD-005 delivers superior performance with extremely low insertion loss, back reflection, and residual phase and amplitude modulation.
Features:
. Minimal insertion loss and back reflection
. Low residual phase and amplitude modulation
. RS-232 control option
. Remote operation wavelength control
Specifications:
Insertion Loss1 < 0.05 dB (without connectors)
< 0.6 dB (with connectors)
Center Operating Wavelength2 λ range 1: 1310, 1480, 1550, 1600n
λ range 2: 980, 1060, 1310nmm
Operating Wavelength Range3 > 100 nm Output Degree of Polarization4,5 < 5% Average PMD < 0.05 ps Intrinsic PDL < 0.05 dB, 0.01dB typical Return Loss > 65 dB (without connectors) Optical Power Handling > 1000 mW Residual Amplitude Modulation < ± 0.01 dB Residual Phase Modulation < 0.1π Power Supply ±12 VDC / 1A to ±15 VDC / 1A, +5 VDC / 0.2A Power Consumption 12 W typical Scrambling Frequencies Factory set 4 fixed frequencies, distributed between DC to > 700 kHz Operating Temperature Standard: 10 to 45°C Storage Temperature Extended: -5 to 65°C -20 to 75 °C Board Dimensions 220 × 100 × 30 mm (L × W × H) Notes:
1. For SMF-28 compatible fiber. Other fibers may have higher loss, especially wtih connectors.
2. Please note that the fiber used determines the operating wavelength range. The standard fiber covers wavelengths in the 1260-1620nm range. The PCD-005 can also be configured to cover the 980-1310nm range using a different fiber. This fiber can handle wavelengths up to 1650nm, but if it is coupled to SMF-28 fiber, the performance may not be quite as good as normal due to mode mismatch. Please contact General Photonics for details.
3. Center Wavelength ± 50 nm
4. At 500 Hz detection bandwidth
5. Measured from a photodetector at PCD-005 output using a spectrum analyzer. A polarizer is placed in front of the photodetector to convert polarization modulation to amplitude modulation.
Applications:
PDG (polarization dependent gain) mitigation
Facilitating PMD compensation
Facilitating PDL measurement
Polarization sensitivity elimination in fiber sensor systems and in measurement systems
Typical Performance Data:
Figure 1. PCD-005 SOP distribution measured by a POD-101D polarimeter using a sampling rate of 625 kS/s over a measurement period of 1 second.
Figure 2. Degree of Polarization (DOP) as a function of detection bandwidth.
Figure 3. Effective scrambling bandwidth.
Ordering Information:
商品属性 [波长] λ range 1: 1310, 1480, 1550, 1600n λ range 2: 980, 1060, 1310nmm [PDL] < 0.05 dB, 0.01dB typical [PMD] < 0.05 ps