1550nm PM Band Pass Filter

The 1550nm PM 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 EDFAs 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 PM fiber amplifiers, fiber lasers, and high-speed communication system and instrumentation applications.

Features Applications
·         Low Insertion Loss

·         High isolation

·         High power handling

·         High Stability and Reliability

 ·         PM Fiber laser

·         PM Fiber amplifier

·         EDFA

Performance Specifications

Parameter Unit Specification
Center Wavelength nm 1550
Min. Pass bandwidth@0.5dB nm 2 5 10 15
Min. Stop bandwidth@25dB down nm 10 10 25 25
Max. Insertion Loss over Pass Band dB 0.8 0.8 0.8 0.8
Min. Extinction Ratio (For PM fiber) dB 20
Min. Return Loss dB 50
Fiber Type – PM1550 Panda fiber
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

*Above specifications are for device without connector.

*For devices with connectors, IL will be 0.3dB higher, RL will be 5dB lower, ER (PM fiber) will be 2dB lower. Power transmit through the connector less than 2W.

*PM band pass filter is both axis working, but the PM fiber and the connector key are 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 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

*Due to ongoing design improvements, the package size is subject to change. Please contact DK Photonics for confirmation.

Order information P/N: PMBPF-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 ⑥
Wavelength Pass bandwidth Power Handling Pigtails Diameter Fiber Length Connector
55:1550nm 2:2nm

5:5nm

10:10nm

15:15nm

 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-55-2-L-25-10-00

Description: 1550nm PM Band Pass Filter, 2nm pass bandwidth, 300mW power, 1.0m PM1550 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.

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