This article describes a single-channel single-mode fiber
optic rotary joint for optical data transmission based on well
designed TEC fiber collimator. The insertion loss of a fiber
optic rotary joint depends on the mechanical misalignments of
the fiber collimator. Analysis of the characteristics of TEC
fiber and TEC fiber collimator coupling characteristics .
Using TEC fiber collimator can reduce the loss of angle tilt
misalignment. We fabricated single-channel fiber optic rotary
joint which insert loss below 1.27dB . We tested fiber-optic
rotary joint by temperature shock from range of – 40 °C up to
+ 85 °C , our products the average variation of insertion loss
is 0.22dB