These fiber optic patch cords, with fixed attenuation between 1 and 20 dB, can be custom-made to the specified value and under strict quality control to facilitate their integration into the circuit. They operate at wavelengths of 1310 and 1550 nm, are compatible with SC, FC, ST, LC, and MU connectors (polished PC, UPC, or APC), have a return loss of up to 50 dB (UPC) and 65 dB (APC), and an operating temperature range of -40 to +75 °C.

Patch cord attenuators are an alternative for LAN, CATV, FTTc, and FTTx.

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