The single-mode fiber coupler is made by using the drawing technology. It can be used in Multi - terminal power distribution. It has the advantages of small volume, high stability, low additional loss and low polarization-related loss. It is widely used in optical fiber communication system, CATV systems, fiber-optic LAN and other fields.

The polarization maintaining fiber coupler is fabricated by a special polarization-maintaining fiber, which can divide the polarized light into two beams of the same polarization state as the input light. The product has passed the GR-1209-CORE and GR-1221-CORE reliability tests and various environmental tests, and product performance is very good, stable and reliable, having been in a number of national key projects in bulk applications.

The product uses photosensitive surface with 50um InGaAs APD diameter and 2.5Gbps optical detection components made by high sensitivity transimpedance amplifier. And it Uses single-mode or multi-mode fiber input, SMA single-ended output