Fiber Loopback is designed to provide a media of return path for a fiber optic signal, typically it is used for fiber optic testing applications or network restorations and it is absolutely an economical solution for a number of fiber optic test applications.

Specifications:
Type: Loopback Module
Test wavelength: 1,310 and 1,550nm
Fiber: Bending insensitive Singlemode 9/125
Connector: LC/UPC
Insertion loss: Typical: ≤0.20dB Maximum: ≤0.30dB
Return loss: UPC: ≥50.0dB
Repeatability: ≤0.10dB
Interchangeability: ≤0.20dB
Durability: ≤0.20dB typical change, 1,000 mating
Operating temperature: -20 to +70 degrees
Storage temperature: -40 to +85 degrees

Applications:
R&D
Fiber labs
Telecom testing
FTTX testing
Patch panel applications
Equipment interconnection