2x1x4 PM PLC Splitter Polarization Maintaining Fiber Splitter 1260nm 1650nm Low Insertion Loss

2x1x4 PM PLC Splitter Polarization Maintaining Fiber Splitter 1260 1650nm Low Insertion Loss For Coherent Communication FOG Fiber Sensing And Laser System

1. Product Overview

The 2*(1*4) Polarization-Preserving Planar Waveguide Splitter (2*(1*4) PM PLC Splitter) is a high-precision passive optical device based on PLC (Planar Lightwave Circuit) technology. It is used to evenly distribute input optical signals to multiple output channels while maintaining stable polarization. This product employs high-quality polarization-preserving fiber (PM 15-U25D) and a precision PLC chip design, ensuring low insertion loss, high extinction ratio, and excellent channel consistency over a wide wavelength range (1260~1650nm).

The product is designed with two independent 1*4 splitter structures, capable of simultaneously splitting two input optical signals. It features a compact structure, high stability, and superior polarization-preserving performance, and is widely used in systems requiring high polarization accuracy, such as fiber optic gyroscopes, coherent communication, and fiber optic sensing.

The 2*(1*4) PM PLC splitter, with its superior polarization control and stable splitting performance, is widely used in the following fields:

• Coherent Optical Communication Systems: Used for uniform distribution and coherent detection of optical signals, maintaining consistent signal polarization, and improving system signal-to-noise ratio and stability.
• Fiber Optic Gyroscopes (FOGs): In inertial navigation systems, used for optical path distribution and interference signal control, ensuring high-precision operation of the gyroscope system.
• Fiber Optic Sensing Systems: In interferometric or reflective fiber optic sensing, the 2*(1*4) PM PLC splitter is used for signal distribution and echo detection, improving measurement sensitivity.
• Scientific Research and Testing Systems: Used for multi-channel optical power distribution and polarization maintenance in optical experiments, ensuring the accuracy and repeatability of test results.
• Laser System: Used for energy distribution and feedback monitoring in multi-channel laser output systems to ensure stable laser output power.

The 2*(1*4) polarization-maintaining PLC splitter adopts advanced PLC planar waveguide technology and high-precision packaging technology, possessing the following excellent characteristics:

• Low Insertion Loss: Typical value ≤8.2dB, ensuring efficient optical signal transmission.
• Good Channel Consistency: Channel uniformity ≤0.8dB, ensuring stable and balanced signals at each output port.
• High Extinction Ratio: ≥18dB, effectively maintaining consistent optical signal polarization direction and reducing polarization crosstalk.
• High Return Loss and High Directivity: Return loss ≥50dB, directivity ≥50dB, ensuring a clear optical path free from reflection interference.
• Wide Operating Wavelength Range: Supports 1260~1650nm, compatible with multiple communication bands (e.g., 1310nm, 1480nm, 1550nm).
• High Power Handling Capacity: Maximum input power up to 300mW, suitable for high-power optical systems.
• Excellent Temperature Stability: Operating temperature -5℃~+65℃, storage temperature -40℃~+85℃, adaptable to various environments.
• Compact Design: Standard ABS package (100*80*10mm), facilitating system integration and modular installation.

In practical applications, the 2*(1*4) PM PLC splitter is widely used due to its high performance:

• In fiber optic gyroscope systems: This splitter is used to distribute the input optical signal to a multi-channel interference optical path, ensuring system sensitivity and direction detection accuracy.
• In coherent communication systems: Splitters are used for multi-channel signal transmission and coherent detection, maintaining consistent polarization and improving signal resolution.
• In fiber optic sensor networks: Enables multi-point signal acquisition and echo distribution, suitable for monitoring physical quantities such as strain, pressure, and temperature.
• In laser systems: Distributes laser signals evenly across different optical paths, achieving multi-point output and power balance.
• In scientific research experiments: Used for multi-path interference experiments and polarization preservation tests, ensuring the stability and reliability of the optical system.

Compared to traditional FBT fused biconical taper splitters, the 2*(1*4) PM PLC splitter offers significant advantages in accuracy, stability, and polarization control:

• High-precision polarization preservation performance: Utilizes PM fiber and planar waveguide integration technology to effectively ensure unchanged signal polarization direction.
• Low loss and high consistency: Optimized PLC chip structure design ensures uniform output power across multiple channels.
• Compact Structure and High Reliability: Modular packaging design results in small size, easy installation, and good shock resistance.
• Wide Wavelength Compatibility: Adapts to multiple wavelength bands and can be flexibly applied to various optical communication and sensing systems.
• Multiple Connector Configurations: Input uses FC/APC interface (slow axis operation), output uses MPO/APC interface (fast axis operation), compatible with mainstream systems.
• High Cost-Effectiveness and Long Lifespan: Mature PLC technology ensures long-term stable operation and low maintenance costs.

The 2*(1*4) polarization-preserving planar waveguide splitter is a high-performance, high-reliability passive optical device that can achieve multi-channel optical power distribution while maintaining polarization. Its low insertion loss, high extinction ratio, excellent temperature stability, and precise channel consistency make it an ideal choice for coherent communication, fiber optic gyroscopes, fiber optic sensing, and optical testing systems. With its superior PLC manufacturing process and polarization-maintaining technology, this product not only ensures high-fidelity transmission of optical signals but also effectively improves system stability and accuracy, making it a key core component in modern optical communication and optoelectronic systems.