Band Pass Filter-for 1550nm PM fiber laser

The 1550nm Band-pass Filter is a micro-optics device based on environmentally stable thin-film filter technology. It is used to block out unwanted noise signals in fiber amplifier or fiber laser systems. The components are characterized with high isolation, low insertion loss, high return loss, excellent environmental stability and high-power handling capability. They are ideal for fiber amplifiers, fiber lasers, and high-speed communication system and instrumentation applications.

Performance Specifications

PARAMETER		UNIT	SPECIFICATION
Max. Insertion Loss over Pass Band		dB	0.8
Min. Extinction Ratio	Type B	dB	20
Min. Extinction Ratio	Type F	dB	22
Min. Return Loss		dB	50
Fiber Type		–	PM1550-XP, or other
Max. Power Handling		W	0.5, 1, 2, 3, 5, 10
Max. Tensile Load		N	5
Operating Temperature		℃	-5 – 75
Storage Temperature		℃	-40 – 85
Dimensions		mm	Ф5.5×L35

Center Wavelength(nm)	Min. PB @0.5dB(nm)	Min. SB (nm)
1550.12	0.2	0.5 @25dB down
	0.4	0.8 @25dB down
	0.8	1.2 @25dB down
1550	2	6 @30dB down
	5	12 @30dB down
	10	20 @30dB down
	15	25 @30dB down
1530/1540/1560/1580	2	5 @25dB down
Other center wavelengths and bandwidths can also be customized, but MOQ is required, please contact us.

Above specifications are for device without connector.
“B” for Both axis working, “F” for Fast axis blocking, Integrated polarizer.
For devices with connectors, IL will be 0.3dB higher, RL will be 5dB lower, ER (PM fiber) will be 2dB lower. Power transmits through the connector less than 2W, connector key is default aligned to the slow axis.
For >10W high power applications, we will use heat sink package, contact DK Photonics for details.
Since the function of the BPF is to be blocked unwanted noise signals, the blocked light remains in the interior of the housing, so we do not recommend applying it to too high power or adding reflection port to reflect the blocked light.

Package Dimension

PM Band Pass Filter

The default is without a reflective port.If the power to be blocked is relatively high, it is recommended to have a reflective port to guide the energy out of the shell.
Due to ongoing design improvements, the package size is subject to change.
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: PMBPF-①-②-③-④-⑤-⑥-⑦-⑧

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	⑥	⑦	⑧
Port	Wavelength	Pass bandwidth	Axis Alignment	Power Handling	Pigtails Diameter	Fiber Length	Connector
101:1×1(default) 102: 1×2(With reflect unwanted signals port)	55:1550nm	02:0.2nm 04:0.4nm 2:2nm 5:5nm 10:10nm 15:15nm	B: Both axis working F: Fast axis blocking	L:<0.3W 1:1W 2:2W	25:250μm bare fiber 90:900μm Loose Fiber XX: Others	05:0.5m 08:0.8m 10:1.0m XX: Others	00: None FP: FC/PC FA: FC/APC LA: LC/APC XX: Others

Part Number Example:PMBPF-101-55-2-F-L-25-10-00

Description:1550nm PM Band Pass Filter, 1×1,2nm pass bandwidth, Fast axis blocking,300mW power, 1.0m PM1550-XP fiber, with bare fiber, no connectors at all ports.

Ordering Information for Custom Parts:

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

Product

PM Band Pass Filter

Products