Patent ID: 6826325
Filing Date: 2004-11-30
Classification: G02B

Abstract:
An optical signal switching unit having:a plurality of input waveguides for receiving optical signals and a plurality of output waveguides for outputting optical signals input to said input waveguides, said input waveguides and said output waveguides intersecting each other at respective intersections; a plurality of optical switches located at respective intersections of said input and output waveguides for switching courses for transmission of the optical signal between respective input and output waveguides, each of said optical switches being switchable between a first course state providing a first course for transmission of the optical signal, a second course state providing a second course for transmission of the optical signal, and an intermediate state providing both of the first course and the second course for transmission of the optical signal; and a switch state control part controlling states of said plurality of optical switches, thereby controlling which of said output waveguides output an optical signal input to respective input waveguides.