2000/1570nm Polarization Maintaining Filter WDM

The 2000/1570nm Polarization Maintaining Filter WDM multiplexes PM signals and maintains the output polarization with high extinction ratio using advanced micro-optic filter technology. All input and output fibers are polarization maintaining. It utilizes advanced filter technology to yield wide-band, low insertion loss, high polarization extinction, high return loss in a compact package. They are ideal for PM fiber amplifiers, fiber lasers and instrumentation applications.

Performance Specifications

PARAMETER		UNIT	VALUES
Pass band Wavelength		nm	1900~2050
Min. Isolation at 23℃		dB	25(Typ.30)
Max. Insertion Loss at 23℃		dB	1.2 (Typ.0.8)
Max. Extinction Ratio at 23℃		dB	20
Reflection band Wavelength		nm	1520~1590
Max. Insertion Loss at 23℃		dB	1.0
Min. Isolation at 23℃		dB	12(Typ.15)
Min. Extinction Ratio		dB	20
Min. Return Loss		dB	50
Max. Optical Power (CW)		W	0.3, 0.7, 1, 2, 3, 5
Max. Peak Power for ns Pulse if any		kW	1, 5, 10
Max. Thermal Stability		dB/℃	0.005 over -5 °C to +70 °C
Fiber Type	Common & Pass Port	–	PM1950 fiber or other
	Reflect Port	–	PM1550 fiber
Operating Temperature		℃	-5~+70
Storage Temperature		℃	-40~+85
Package Dimensions		mm	Ø5.5 x L35(<5W), 60x12x8(>5W)

Above specifications are for device without connector, all parameters are tested at room temperature.
PM WDM device is both axis working, but we can integrate a polarizer to achieve the pass wavelength fast axis blocked, contact DK Photonics for details.
For devices with connectors, IL will be 0.3dB higher, RL will be 5dB lower and ER will be 2dB lower. Power transmits through the connector less than 2W. The default connector key is aligned to slow axis.
For >10W high power applications, we will use heat sink package, contact DK Photonics for details.
If there is pulse application, please be sure to inform us of pulse energy and peak power.

Package Dimension

Polarization Maintaining Filter WDM

For high power applications, we will use heat sink package, contact DK Photonics for details. Please contact DK Photonics for confirmation.

Order information

P/N: PMFWDM-①-②-③-④-⑤-⑥

When you inquire, please provide the correct P/N number according to our ordering information, and attach the appropriate description would be better. If need any connector, we do not recommend choosing a 250μm bare fiber pigtail.

①	②	③	④	⑤
Wavelength	Power Handling	Pigtails Diameter	Fiber Length	Connector
2057: 2000nm pass/ 1570nm reflect	S:<0.3W L:<0.7W 1:1W 2:2W	25:250μm bare fiber 90:900μm Loose Tube XX: Others	05:0.5m 08:0.8m 10:1.0m XX: Others	00: None FP: FC/PC FA: FC/APC XX: Others

Part Number Example: PMFWDM-2057-S-25-10-00

Description: 2000/1570nm Polarization Maintaining Filter WDM, <0.3W power handling, 2000nm pass/1570nm reflect, PM1550 fiber on R, PM1950 fiber on C & P port, with bare fiber, 1.0m fiber length, and no connector at all ports.

Ordering Information for Custom Parts:

If you need to customize other specifications, please provide detailed description for your requirement.

Product

PM Filter WDM

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