1×2 Filter PM Fiber Standard Coupler: Low Insertion Loss, High Extinction Ratio — For EDFA, Fiber Lasers, Coherent Communication, And Fiber Sensors
1. Product Description
This 1*2 Filter PM Fiber Standard Coupler is a high-performance polarization-maintaining (PM) fiber coupler based on Thin-Film Filter (TFF) technology.
2. Specifications
| Parameters |
Unit |
1 x 2 |
| Splitting Ratio |
nm |
50/50 |
| Operating Wavelength |
nm |
1310/1550 |
| Operating Bandwidth |
nm |
±40 |
| Insertion loss |
nm |
≤3.8 |
| Extinction Ratio |
dB |
≥20 |
| Return Loss |
dB |
≥50 |
| Power Handling |
mW |
≤500 |
| Operating Temperature |
℃ |
-10~+65 |
| Storage Temperature |
℃ |
-40～+85 |
| Fiber Type |
/ |
Corning Panda fiber |
| Fiber Length |
m |
1.0±0.1m, others on request |
| Connector |
/ |
FC/APC,FC/UPC, others on request |
| Package Dimension |
250μm Bare Fiber |
mm |
φ3.0*35 |
| 900μm Loose Tube |
mm |
φ3.0*38 |
| 2mm/3mm Loose Tube |
mm |
90*20*10 |
| Splitting Ratio |
Unit |
Insertion loss |
| 1 x 2 |
| 50/50 |
dB |
≤3.8 |
| 20/80 |
dB |
≤8.2/1.7 |
| 10/90 |
dB |
≤11.8/1.0 |
| 5/95 |
dB |
≤14.9/0.9 |
| 1/99 |
dB |
≤22.2/0.6 |
*Above specifications are for devices with the connectors.
*The PM fiber and the connector key are aligned to the slow axis, fast axis is blocked
Key Features
- 1*2 polarization-maintaining coupler structure based on TFF technology
- Utilizes Corning Panda Fiber for stable polarization-maintaining performance
- Typical insertion loss ≤3.8 dB at a 50/50 splitting ratio
- Extinction ratio ≥20 dB
- Return loss ≥50 dB
- Directivity ≥50 dB
- Supports various splitting ratios: 50/50, 10/90, 20/80, 5/95, 1/99
- Supports slow-axis, fast-axis, or dual-axis operation modes
- Available package options: Φ5.5*38 mm or 90*20*10 mm
3. Applications
- EDFA (Erbium-Doped Fiber Amplifiers)
- Optical test and measurement instruments
- Coherent communication systems
- Fiber laser systems
- Fiber sensing systems
- Optical experimental and research platforms
FAQ
Q1: What are the main advantages of this PM Fiber Coupler?
A: This product is based on TFF thin-film filtering technology and uses Corning Panda polarization-maintaining fiber, featuring low insertion loss, high extinction ratio, and high return loss. Its extinction ratio can reach ≥20dB, and return loss ≥50dB, meeting the requirements of high-precision optical power distribution and polarization-maintaining applications.
Q2: What splitting ratios does this product support?
A: This 1×2 polarization-maintaining fiber coupler supports multiple splitting ratios, including 50/50, 20/80, 10/90, 5/95, and 1/99, which can be selected according to the power distribution requirements of different systems.
Q3: Can this product be customized?
A: Customization is supported.
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1×2 Filter PM Fiber Optic Coupler Low Insertion Loss High Extinction Ratio Images
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