The Polarization Maintaining Filter Coupler is a polarization maintaining coupler which splits the light from the input PM fiber into two output PM fibers. The PM Filter Coupler supports the lightwave of each polarization to work, without blocking any polarization. The rugged stainless steel package is designed for high optical performance and stability. This compact device offers low excess insertion loss, low back reflection, and high extinction ratio. Split ratios from 1 to 50% are available.

The PM Filter Coupler can be used to split high power linearly polarized light into multiple paths without perturbing the line are state of polarization (SOP).It can also be used as a power tap to monitor signal power in a PM fiber system without disturbing the linear SOP of light propagating in the PM fiber. Applications include PM fiber interferometers, power sharing in polarization sensitive systems, and signal monitoring in PM fiber systems.

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

Features Applications
·        Low Insertion Loss

·        High Extinction Ratio

·        Compact In-Line Package

·        High Stability and Reliability

 ·        Fiber Optic Instruments

·        Fiber Sensors

·        Coherent Detecting

·        Research

Performance Specifications

Parameter Unit Values
Configuration – 1×2 2×2 1×2 2×2 1×2 2×2
Center Wavelength nm 1030, 1064 1310, 1550 1940, 2000,2050
Operating Wavelength Range nm ±20 ±40
Tap Coupling Ratio % 1±0.5%, 5±1.0%, 10±2.0%, and 50% 1±0.2%, 2±0.4%, 5±1.0%, 10%, and 50%
Max. Insertion Loss dB IL related to CR
Max. Excess Lose dB 0.8 1.2 0.7 1.0 1.2 1.5
Uniformity(Only for 50/50) dB 0.5 0.8 0.4 0.6 0.6 0.8
Mini. Extinction Ratio Type B(Both of axis working) dB 20 18 20 18 18 17
Return Loss dB ≤50
Max. Power Handling W 0.5, 1, 2, 5
Max. Tensile Load N 5
Fiber Type – HI1060 or PM980 Panda fiber for tap port

PM980 Panda fiber for input & output ports

 SMF-28, PM1300 Panda fiber for tap port

PM1300 Panda fiber for input & output ports

 SMF-28e or PM1550 or PM1950 fiber for tap port

PM1550 or PM1950 fiber for input & output ports
Operating Temperature ℃ -5 to +70
Storage Temperature ℃ -40 to +85
Package Dimensions mm Ø5.5 x L35
  1. above specifications are for device without connector. All parameters are tested at room temperature.
  2. If tap port coupling ratio is ≤ 5%, ER will be 2dB lower; for ≤1% tap port, ER is out of concern.
  3. For devices with connectors, IL will be 0.3dB higher, RL will be 5dB lower and ER will be 2dB lower. The default connector key is aligned to slow axis. Power transmits through the connector less than 2W.
  4. For >10W high power applications, we will use heat sink package, contact OPC PHOTONICS for details.
  5. If there is pulse application, please be sure to inform us of pulse energy and peak power.

Package Dimensions

Order information P/N: PMFC-①-②-③-④-⑤-⑥-⑦-⑧-⑨

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 ⑨
Port Operating Wavelength Power Handling Axis Alignment Coupling Ratio Fiber Type for Tap Port Pigtails Diameter Fiber Length Connector
102:1×2

202:2×2

 30:1030nm

64:1064nm

13:1310nm

15:1550nm

1940:1940nm

2000:2000nm

2050:2050nm

XX: Others

 L:<0.5W

1:1W

2:2W

 B:Both axis working 50:50/50

40:40/60

30:30/70

20:20/80

10:10/90

01:1/99

XX: Others

 0:SM Fiber

1: PM Panda fiber

X:Others

 25:250μm bare fiber

90:900μm Loose Tube

XX: Others

 08:0.8m

10:1.0m

XX: Others

 00:None

FP: FC/PC

FA: FC/APC

SP: SC/PC

LA: LC/APC

XX: Others

Part Number Example: PMFC-102-30-2-B-50-1-90-10-FA

Description: 1030nm Polarization Maintaining Filter 1×2 Coupler – 2W, both axis working, 50:50 coupling ratio, 1.0m PM Panda Fiber with 0.9mm OD loose tube, and FC/APC 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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