Fiber optic loopback utilizes a push-pull tab mechanism to provide an effective method to test the performance of the fiber optic devices. Generally, Fiber optic loopback has two appearance: fiber optic loopback cable and fiber optic loopback module. Fiber optic loopback cable is the traditional loopback with a visible cable shaping like a loop while fiber optic loopback module has an enclosure to protect the fiber inside. fiber optic loopback module is compact and convenient to use.

Fiber optic loopback has different types of optical connectors and fibers. Categorized by connectors, there are SC, LC, MTRJ, E2000 types, etc. with a low insertion loss, low return loss and high precision alignment, LC fiber optic loopback is widely used all over the world. Another popular type is SC fiber optic loopback whose connector is compliant to IEC, TIA/EIA, NTT and JIS specifications. Categorized by fiber types, there are single-mode loopback (9/125) and multimode loopback (50/125, 62.5/125).

Typically, Fiber Optic Loopbacks are designed for equipment testing, self-testing, engineering, network diagnostics and measurement applications. They are playing an important role in troubleshooting in laboratories and manufacturing environments. We provide many fiber optic loopback products with high optical performance achieved through a precision ceramic ferrule.