| 摘要 |
PROBLEM TO BE SOLVED: To provide a delay interferometer in which the difference in optical path length to each of output ports can be easily corrected. SOLUTION: The delay interferometer in which a Michelson delay interferometer unit is mounted in a package includes: the Michelson delay interferometer unit which outputs A-channel first interference output light which is obtained by optically processing input light received through an input port and split into two A and B channels through a splitting portion having a difference in optical path length, from an A-channel first output port and an A-channel second output port and outputs B-channel first interference output light from a B-channel first output port and a B-channel second output port; and a first optical path length compensating member which is interposed between one of the A-channel interference output light and the B-channel interference output light and the A-channel first output port or the B-channel first output port. COPYRIGHT: (C)2010,JPO&INPIT |
