1×2 Filter PM Fiber Optic Coupler Low Insertion Loss High Extinction Ratio
This 1*2 Filter PM Fiber Standard Coupler is a high-performance polarization-maintaining (PM) fiber coupler based on Thin-Film Filter (TFF) technology. It is capable of splitting an input optical signal into two output ports according to a specified ratio while maintaining the stability of the optical signal's polarization state. Utilizing high-quality Corning Panda Fiber, this product features low insertion loss, a high extinction ratio, and excellent environmental stability, making it ideally suited for optical communication and photonic systems that demand high precision in power control and superior polarization-maintaining performance. With its compact structure and robust mechanical strength, this device can be widely integrated into fiber lasers, EDFAs, coherent communication systems, and fiber sensing platforms, serving as a critical passive component for achieving high-precision optical power distribution.
| 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
- 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
- EDFA (Erbium-Doped Fiber Amplifiers)
- Optical test and measurement instruments
- Coherent communication systems
- Fiber laser systems
- Fiber sensing systems
- Optical experimental and research platforms
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