China Fiber Optic Loopback Fiber optic loopback,also known also as loopback adapter, loopback cable or fiber optic loopback module,it’s a plug type optical deivce for equipment testing, self-testing, engineering, network diagnostics and measurement applications.These devices are typically used for testing the transmission capability and receiver sensitivity of network equipment. Optical loopback plug is an important part of troubleshooting in laboratories and manufacturing environments. A high optical performance is achieved due to precision ceramic ferrule. Arkoptics manufacture different types of fiber optic loopback modules both singlemode and multimode.Our optical loopbacks feature with high durability and low loss performance.They are compliant to Telcordia, EIA/TIA and IEC standards. Features: • Plug in type • Good optical performance • High durability and repeatability • Effectively equipment self-testing and engineering SC optical loopback module Technical Specification Parameter Values Operating wavelength1310nm and 1550nm Return LossUPC>50dB / APC> 60dB Max power1W Operating temperature-40 /℃ to +75/℃ Storage temperature-40 /℃ to +85/℃ StandardIEC-61754-4China Fiber Optic Loopback website:http://www.arkoptics.com/fiber-optic-loopback/