Patent ID: 6731836
Filing Date: 2004-05-04
Classification: H04B

Abstract:
A dispersion compensator comprising:a first optical path pair having first and second optical paths; a second optical path pair having third and fourth optical paths; an optical coupler, comprising a beam splitter, connected to one end of the first, second, third, and fourth optical paths to split light from the first optical path pair into the third and fourth optical paths and light from the second optical path pair into the first and second optical paths; an optical signal input/output device to input an optical signal into the first optical path through the other end of the first optical path and output light output from the other end of the first optical path; and three mirrors disposed respectively on the other end of the second, third, and fourth optical paths, wherein at least two of the three mirrors are slidable in its respective optical axis direction, and wherein the first, second, third, and fourth optical paths comprise an open optical system.