Patent ID: 7433556

Claim:
A device for transmitting optical signals from an input light waveguide to an output light waveguide, comprising: a first collimator unit comprising at least two collimators; a second collimator unit comprising at least two collimators and supported to be rotatable relative to the first collimator unit about a rotation axis; at least one derotating optical element made of a first optically transparent medium and disposed between the first collimator unit and the second collimator unit for transmitting light beams between the first collimator unit and the second collimator unit; a first beam splitter/combiner receiving signals from said input light waveguide and splitting a received signal into at least two signals which are fed into two different collimators of said first collimator unit; and a second beam splitter/combiner receiving signals from at least two collimators of said second collimator unit, said collimators of the second collimator unit corresponding to said collimators of the first collimator unit, and said second beam splitter/combiner combining the signals received from the at least two collimators of the second collimator unit into one signal which is output through said output light waveguide.