1x2 2x2 Fused PM Fiber Coupler Polarization Maintaining FBT Splitter 1310 1550nm For EDFA Coherent Communication Power Monitoring Fiber Sensor

1. Product Overview

This product is a 1*2 / 2*2 Fused PM Fiber Standard Coupler, manufactured using panda-type polarization-maintaining fiber and FBT (fused tapered) technology. It can stably distribute optical power in two communication bands: 1310nm and 1550nm.

2. Key Features

• Supports 1310nm / 1550nm dual-wavelength applications
• Supports 1*2 and 2*2 port configurations
• Uses Panda fiber PM15-U25A polarization-maintaining fiber
• Operating bandwidth ±20nm
• Typical additional loss ≤0.8
• Polarization extinction ratio ≥18dB
• Return loss ≥50dB

3. Applications

• EDFA
• Fiber Optic Instrument
• Coherent Communication
• Power Monitoring
• Fiber Sensor

FAQ

Q1: What operating wavelengths does this Fused PM Fiber Coupler support?

A: This product supports dual-wavelength operation at 1310nm & 1550nm, with an operating bandwidth of ±20nm, suitable for polarization-maintaining optical path splitting, monitoring, and testing applications in the communication band.

Q2: What are the main performance characteristics of this product?

A: This product features low added loss, high return loss, high directivity, and good polarization maintenance capability. Its typical added loss is ≤0.8dB, polarization extinction ratio is ≥18dB, return loss is ≥50dB, directivity is ≥55dB, and maximum power handling is ≤0.5W.

Q3: Does this polarization-maintaining fused fiber coupler support customization?

A: Customization is supported. The product is available in 1*2 or 2*2 port configurations, supporting different splitting ratios such as 50/50, 20/80, 10/90, 5/95, and 1/99. The fiber length, package size, sheath type, and connector type can be customized. Connectors can be selected from FC/APC, FC/UPC, or other specifications; the default connector key alignment is with the slow axis.