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INSTRUMENTS MODULES OCT PRODUCTS SPECIAL POLARIZATION COMPONENTS ACCESSORIES APPLICATION GUIDE FAQS INSTRUMENTS -41- General Photonics Corporation 909.590.5473 www.generalphotonics.com General 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. Insertion Loss 1 < 0.05 dB (without connectors) < 0.6 dB (with connectors) Center Operating Wavelength 2 λ range 1: 1310, 1480, 1550, 1600nm λ range 2: 980, 1060, 1310nm Operating Wavelength Range 3 > 100 nm Output Degree of Polarization 4,5 < 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 Extended: -5 to 65°C Storage Temperature -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. Features: . Minimal insertion loss and back reflection . Low residual phase and amplitude modulation . RS-232 control option . Remote operation wavelength control Polarization Modules for Communications and Sensor Systems Polarization Scrambler Module with Microprocessor Controller Tech Info: pp. 104, 223 FAQ: p. 229 Specifications:

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Page 1: Polarization Modules for Communications and Sensor Systems ... · rate of 625 kS/s over a measurement period of 1 second. Figure 2. Degree of Polarization (DOP) as a function of detection

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-41- Genera l Photon ics Corporat ion 909.590.5473 www.genera lphoton ics .com

GeneralPhotonics’PolarizationScramblermoduleusesabreakthroughall-fibertechnologytoeffectivelyrandomizepolarizationstates.Thismodule isdesigned tobeeasilyplugged intosensorequipmentormeasurementinstrumentswithminimaldevelopmenteffort.ItsadvanceddigitalcircuitrydeliversuniformSOPdistributionoverawideoperation temperaturerange,makingitagoodchoiceforsensorfieldapplications.ThePCD-005canberemotecontrolledviaRS-232 toset theoperationwavelengthorenable/disable thescramblingoperation.ThePCD-005deliverssuperiorperformancewithextremely low insertion loss,back reflection,and residual phase and amplitude modulation.

InsertionLoss1 <0.05dB(withoutconnectors)<0.6dB(withconnectors)

CenterOperatingWavelength2λrange1:1310,1480,1550,1600nmλrange2:980,1060,1310nm

OperatingWavelengthRange3 > 100 nm

OutputDegreeofPolarization4,5 <5%

AveragePMD < 0.05 ps

IntrinsicPDL <0.05dB,0.01dBtypical

ReturnLoss >65dB(withoutconnectors)

OpticalPowerHandling >1000mW

ResidualAmplitudeModulation <±0.01dB

ResidualPhaseModulation < 0.1πPowerSupply ±12VDC/1Ato±15VDC/1A,+5VDC/0.2A

Power Consumption 12Wtypical

ScramblingFrequenciesFactoryset4fixedfrequencies,distributedbetweenDCto>700kHz

OperatingTemperatureStandard:10to45°CExtended:-5to65°C

StorageTemperature -20to75°C

BoardDimensions 220×100×30mm(L×W×H)

Notes:1.ForSMF-28compatiblefiber.Otherfibersmayhavehigherloss,especiallywtihconnectors.2.Pleasenotethatthefiberuseddeterminestheoperatingwavelengthrange.Thestandardfibercoverswavelengthsinthe1260-1620nmrange.ThePCD-005canalsobeconfiguredtocoverthe980-1310nmrangeusingadifferentfiber.Thisfibercanhandlewavelengthsupto1650nm,butifitiscoupledtoSMF-28fiber,theperformancemaynotbequiteasgoodasnormalduetomodemismatch.PleasecontactGeneralPhotonicsfordetails.3.CenterWavelength±50nm4.At500Hzdetectionbandwidth5.Measured fromaphotodetectoratPCD-005outputusingaspectrumanalyzer.Apolarizer isplaced in frontof thephotodetector toconvertpolarization modulation to amplitude modulation.

Features:. Minimalinsertionlossandbackreflection. Lowresidualphaseandamplitudemodulation. RS-232controloption. Remoteoperationwavelengthcontrol

Polarization Modules for Communications and Sensor Systems

Polarization Scrambler Module with Microprocessor Controller

TechInfo:pp.104,223FAQ:p.229

Specifications:

Page 2: Polarization Modules for Communications and Sensor Systems ... · rate of 625 kS/s over a measurement period of 1 second. Figure 2. Degree of Polarization (DOP) as a function of detection

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Genera l Photon ics Corporat ion 909.590.5473 www.genera lphoton ics .com -42-

Applications:

PDG(polarizationdependentgain)mitigation

FacilitatingPMDcompensation

FacilitatingPDLmeasurement

Polarization sensitivity eliminationin fiber sensor systems and in measurement systems

Polarization Modules for Communications and Sensor Systems

Polarization Scrambler Module with Microprocessor Controller

Page 3: Polarization Modules for Communications and Sensor Systems ... · rate of 625 kS/s over a measurement period of 1 second. Figure 2. Degree of Polarization (DOP) as a function of detection

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-43- Genera l Photon ics Corporat ion 909.590.5473 www.genera lphoton ics .com

Seepages44,46forminiaturescrambler,page 77 for passive depolarizer

Figure3.Effectivescramblingbandwidth.

Accessories:ADB—001(RS-232adapterboard)

Figure1.PCD-005SOPdistributionmeasuredbyaPOD-101Dpolarimeterusingasamplingrateof625kS/soverameasurementperiodof 1 second.

Figure 2. Degree of Polarization (DOP) as afunction of detection bandwidth.

TypicalPerformanceData:

Polarization Modules for Communications and Sensor Systems

Polarization Scrambler Module with Microprocessor Controller

OrderingInformation:

PCD— 005 — — —

TemperatureRange:ST=standardET=Extended

ConnectorType:FC/PC,FC/APC,SC/PC,SC/APC,orNC=noconnectorsOthers specify

WavelengthRange:01=1260-1650nm02=980-1310nm


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