1310-1550nm Polarization Maintaining Filter Coupler (GK-PMFC Series)
description1
Specifications
Parameter |
Unit |
Value |
Center Wavelength |
nm |
1310, 1550 |
Operating Wavelength Range |
nm |
λc ± 40 |
Configuration |
- |
1 × 2 2 × 2 |
Max. Excess Loss |
dB |
0.7 1.0 |
Max. Uniformity |
dB |
0.6 0.8 |
Tap Ratio |
% |
1 ± 0.5, 5 ± 1.0, 10 ± 2.0, and 50 |
Min. Return Loss |
dB |
50 50 |
Min. Extinction Ratio |
dB |
20 18 |
Max. Optical Power (Continuous Wave) |
mW |
300 |
Max. Tensile Load |
N |
5 |
Operating Temperature |
℃ |
-5 to +70 |
Storage Temperature |
℃ |
-40 to +85 |
Fiber Type |
- |
SMF-28 or PM Panda Fiber for tap port PM Panda Fiber for Input & Output ports |
¹IL is 0.3 dB higher, RL is 5 dB lower, and ER is 2 dB lower for each connector added. Connector key is aligned to slow axis. |
Package Dimensions

product description
The GK-PMFC series polarization maintaining coupler is a high-end optical component produced by GKER Photonics Co., Ltd. It utilizes advanced technology to divide input signals at multiple ratios while maintaining high extinction ratio. This coupler supports two polarizations, making it an ideal choice for systems that require polarization integrity.
Here are some key features and specifications of the GK-PMFC series:
1.Center wavelength: 1310 nm or 1550 nm, covering a center wavelength range of ± 40 nm
2.Configuration: Provides 1 × 2 and 2 × 2 configuration options
3.Maximum excess loss: not exceeding 0.7 to 1.0 dB, ensuring efficient signal transmission
4.Maximum uniformity: not exceeding 0.6 to 0.8 dB, ensuring consistent performance across the entire wavelength range
5.Tap ratio: Provides various ratios such as 1 ± 0.5%, 5 ± 1.0%, 10 ± 2.0%, and 50, and supports customized ratios
6.Minimum return loss: up to 50 dB, reducing reflection interference and improving system performance
7.Minimum extinction ratio: at least 20 dB, and even up to 18 dB for high specification products, ensuring the purity of polarized light
8.Maximum optical power processing capability: up to 300 mW under continuous wave, demonstrating excellent power processing capability
9.Maximum tensile load: 5 N, ensuring mechanical stability in various installation environments
10.Working temperature: -5 to+70 ° C, while storage temperature range is -40 to+85 ° C, allowing it to operate stably under changing environmental conditions
11.Fiber type: The tap port can use SMF-28 or Panda fiber, while the input and output ports use Panda fiber, ensuring reliable performance and durability
These characteristics make the GK-PMFC series polarization maintaining couplers highly suitable for fiber laser applications, optical communication systems, and research environments, where precise polarization control and high performance are crucial.