4×4 Filter PM Coupler 1550nm Polarization Maintaining Coupler 25:25:25:25 Split Ratio For EDFA
4×4 Filter PM Coupler (Polarization-Maintaining Coupler) — 25:25:25:25 Split Ratio — For EDFA, Fiber Lasers, Coherent Communication, And Fiber Sensors
This 4*4 Filter PM Coupler is a high-performance passive optical device based on polarization-maintaining (PM) fiber.
| Parameters | Unit | 4x4 |
|---|---|---|
| Splitting Ratio | nm | 25:25:25:25 |
| Operating Wavelength | nm | 1550 |
| Operating Bandwidth | nm | ±15 |
| Insertion loss | dB | ≤7.5 |
| Max. Excess Loss | dB | ≤1.2 |
| Extinction Ratio | dB | ≥20 |
| Return Loss | dB | ≥50 |
| Directivity | dB | ≥50 |
| Power Handling | mW | ≤300 |
| Operating Temperature | ℃ | -5~+75 |
| 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 | mm | 100*80*10 |
With connectors, the handling power is 50mW only, IL is 0.3dB higher, RL is 5dB lower, and ER is 2dB lower. Connector key is aligned to slow axis.
- EDFA (Erbium-Doped Fiber Amplifiers)
- Optical Test Instrumentation
- Coherent Communication Systems
- Fiber Laser Systems
- Fiber Optic Sensing Networks
- Scientific Research and Experimental Platforms
FAQ
1. What specifications can be customized?
We can customize the operating wavelength, packaging structure, connector type, pigtail length, and port configuration according to project requirements. The standard fiber length is 1.0±0.1m. Connectors include FC/APC and FC/UPC, and other connectors can also be customized upon request. The standard package size is 100×80×10mm.
2. How do you ensure product quality and batch consistency before shipment?
As a professional supplier of polarization-maintaining passive components, we can perform tests on insertion loss, additional loss, splitting ratio, extinction ratio, return loss, directivity, port definition, axial alignment, connector end face, and appearance. This product page shows certifications of ISO9001 and RoHS, an MOQ of 1 piece, and a monthly supply capacity of 100,000 pieces, supporting both sample verification and bulk delivery.
Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.