Low-loss fiber optic rotary joint using C-lens collimators
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Abstract:
A low-loss fiber optic rotary joint (FORJ) has been designed by using two kinds of C-lens collimators. Its insertion loss and insertion loss variation due to rotation with single-mode fiber collimator is less than 1.76 dB and 0.43 dB respectively. The maximum insertion loss and coupling variation due to rotation with multi-mode fiber collimator is 1.71 dB and 0.29 dB, respectively. This kind of FORJ features low insertion loss, small coupling variation due to rotation and low cost. This work was supported by the National Natural Science Foundation of China under contract No. 60377031, and National Basic Research Program of China under contract No. 2003CB314907.
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Clc Number:
TH74
