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Band Pass Filter

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Band Pass Filter-for 1550nm 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.

Features

  • Low Insertion Loss
  • High isolation
  • High power handling
  • High Stability and Reliability

Applications

  • Fiber laser
  • Fiber amplifier

The 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
Max. PDL dB 0.1
Min. Return Loss dB 50
Fiber Type – SMF-28e, 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.
  1. Above specifications are for device without connector.
  2. For devices with connectors, IL will be 0.3dB higher, RL will be 5dB lower, Power transmits through the connector less than 2W.
  3. For >10W high power applications, we will use heat sink package, contact DK Photonics for details.
  4. Since the function of the BPF is to block 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.
  5. Other center wavelengths and bandwidths can also be customized, but MOQ is required, please contact us.

Package Dimension

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: BPF-①-②-③-④-⑤-⑥-⑦

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
Port Wavelength Pass bandwidth 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

 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: BPF-101-55-2-L-25-10-00

Description: 1550nm Band Pass Filter, 1×1 port, 2nm pass bandwidth, 300mW power, 1.0m SMF-28e 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.