Patent ID: 6246810
Filing Date: 2001-06-12
Classification: G02B

Abstract:
An optical slip ring system for transferring information between a rotating frame and a stationary frame, comprising:a modulated light source attached to the rotating frame for transferring information to the stationary frame;an optical fiber ring for receiving modulated light from the modulated light source, the optical fiber ring being attached to the stationary frame, the optical fiber ring including:a first optical fiber having a first end and a second end, wherein the first end of the first optical fiber is coupled to a first terminator and the second end of the first optical fiber is coupled to a detector; anda second optical fiber having a first end and a second end, wherein the first end of the second optical fiber is coupled to a second terminator and the second end of the second optical fiber is coupled to the detector; anda signal conditioner coupled to the detector for removing time variations in the transferred information, wherein the signal conditioner restores data edges of the transferred information using an external clock which is derived from a phase locked loop that is synchronized to both a digital data stream of the transferred information and a position feedback sensor that is mounted on the rotating frame.