MM Pump Laser Protector

The Pump Laser Protector, also called Pump Protection Filter, is a passive component which allows maximum transmission from a discrete fibre-coupled pump laser diode and blocks par asitic signals around the centre wavelength of the laser from being reflected back into the laser. Depending on the fiber type of laser diode, we have SM Pump Laser Protector, PM Pump Laser Protector, MM Pump Laser Protector. They can work for 1.0μm fiber laser and 1.5μm fiber laser.

If you do not see a standard Pump Laser Protector that meets your needs, we welcome the opportunity to review your desired specification and quote a custom isolator. Requests for custom fiber pigtails, different wavelengths and handling power of operation or other specific needs will be readily addressed.

Features Applications
·         Low Insertion Loss

·         High Power Handling

·         High Isolation

·         Low Cost

·         High Reliability

·         Excellent Temperature Stability

 ·         Fiber Amplifiers

·         Fiber lasers

·         Test and Measurement

·         Instrumentation

Performance Specifications

Parameters Unit Values
Pump Laser Center Wavelength nm  915  or  975
Operating Wavelength Range nm ± 15
Typ. Pump Insertion Loss dB 0.3
Max. Pump Insertion Loss(-5~70℃) dB 0.6
Operating Signal Wavelength Range Nm 1020~1120(1.0μm) or 1530~1570(1.5μm)
Min. Backward Signal Isolation dB 30
Max. Optical Power CW 10, 20, 25, 30 , 50 or Specify
Min. Return Loss dB 50
Fiber Type – 105/125,NA0.22, 200/220,NA0.22 Multimode Fiber or Specify
Operation Temperature ℃ -5 ~ +65
Storage Temperature Range ℃ -40 ~ +85
  1. Above specification are for device without connector, and may change without notice.
  2. IL is 0.3 dB higher and RL is 5 dB lower for connector added.
  3. The pass optical power is 2 W only for connector added.

Package Dimension

In-line Polarizer

Dimension for <10W

Dimension for <30W

Dimension for 50W

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

Order information P/N: MMPLP-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. For high power applications, we recommend direct splicing without connectors.

① ② ③ ④ ⑤ ⑥ ⑦
Pump Laser Wavelength Optical Power Backward Signal Wavelength Fiber Type Fiber Jacket on In & Out Fiber Length Connector Type on In&Out
915:915nm

975:975nm

XX: Other

 05:5W

10:10W

20:20W

30:30W

50:50W

XX: Other

 10:1064nm

15:1550nm

 XX/XX/XX(core/clad/ NA) 25:250μm Bare Fiber

90:900μm Loose Tube

XX: Others

 10:1.0m

XX: Other

 00:None

XX: Others

Part Number Example: MMPLP-975-20-10-105/125/022-25-08-00

Description: 975nm Multimode Pump Laser Protector, – 20W, backward signal wavelength 1064nm , 105/125um, NA0.22 fiber, with bare fiber & 0.8m length, no connector.

Ordering Information for Custom Parts

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

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