3 Ports 1310nm Singlemode Polarization Insensitive Optical Circulator

3 Ports 1310nm Singlemode Polarization Insensitive Optical Circulator

The 3 Ports 1310nm Singlemode Polarization Insensitive Optical Circulator is a high-performance non-reciprocal passive optical device designed to direct light sequentially from Port 1 → Port 2 and Port 2 → Port 3 while maintaining excellent optical performance independent of the input polarization state. Operating at 1310nm, it provides low insertion loss, high isolation, and stable signal transmission, making it ideal for various singlemode fiber applications.

Built with advanced optical technology and premium materials, this circulator ensures reliable operation and superior wavelength stability across a wide temperature range. It is widely used in optical communication systems, CWDM/DWDM networks, optical amplifiers (EDFAs), OTDR measurement systems, and fiber sensor applications, where unidirectional light routing and minimal signal interference are required.

Specifications

Note: Test environment: 25°C. Data shown exclude connectors. Adding connectors will increase insertion loss by 0.3dB and reduce return loss by 5dB.

Features

Three-port circulator
Low loss, good interchangeability, good inter-pluggability.

Three independent ports
It has low insertion loss, broadband high isolation, and low PDL.
Excellent temperature stability can be used for wavelength addition and subtraction, dispersion compensation, and EDFA applications.

Application Diagrams

Circulator can be used to send optical signals through a single fiber in two directions.
As the picture shows: A Circulator is located at both ends of the fiber. Each Circulator functions to add a signal in one direction while removing the signal in the other.

Dimension Drawing (Unit: mm)