4x4 PM Fiber Optic Coupler 1310nm 1550nm 25:25:25:25 Splitting Ratio ABS Box Package

  The 4*4 PM Fiber Coupler is a multi-port polarization-maintaining optical splitter based on a filter structure. It can distribute one or more input beams in the 1550 nm band equally in proportion to four output beams in a 25:25:25:25 ratio, suitable for polarization-maintaining systems requiring multi-channel power distribution and monitoring. 

• 4*4 proportional power distribution for simpler multi-channel systems

  
  

• Low Insertion Loss and Low Redundant Loss for Easier Link Budgeting

  
  

• Good Extinction Ratio for Both Slow and Fast Axis Applications

  
  

• High Return Loss and High Directivity, Suppressing Reflection and Crosstalk

  
  

• Reliable Power and Environmental Adaptability

    

• Standardized Platform for Convenient Selection and Integration

    

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

FAQ

Q1: What are the splitting ratio and operating wavelength of this 4×4 PM Coupler?

A: The standard splitting ratio of this product is 25:25:25:25, the operating wavelength is 1550nm, and the operating bandwidth is ±15nm. It is suitable for uniform power distribution applications in C-band polarization-maintaining fiber systems.

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

A: This product uses Corning Panda Fiber, featuring low insertion loss, high extinction ratio, high return loss, and high directivity. Its insertion loss is ≤7.5dB, maximum additional loss is ≤1.2dB, extinction ratio is ≥20dB, return loss is ≥50dB, and directivity is ≥50dB, which can improve polarization stability and transmission reliability in multi-port systems.

Q3: Does this 4×4 Filter PM Coupler support customization?

A: Customization is supported. Customers can choose the fiber length, connector type, fiber sheath, and packaging form according to their needs. The standard fiber length is 1.0±0.1m, and the connector can be FC/APC, FC/UPC or other customized types; the connector key is aligned with the slow axis by default, which facilitates the integration of the polarization-maintaining system.