| 摘要 |
PROBLEM TO BE SOLVED: To provide a multiwavelength optical transmission module, a multiwavelength optical receiving module and an optical path difference correction module, by which information can be highly efficiently transmitted without using delay compensation based on an electric circuit. SOLUTION: In the multiwavelength optical transmission module loaded with four semiconductor lasers 101-104 having respectively different oscillation wavelengthsλ1-λ4, an optical path difference correction part 106 consisting of a planer light circuit (PLC) is arranged between a multiplexer part 105 and a transmission part 107. The optical path difference correction part 106 is provided with four waveguides 127-129 having respectively different effective optical lengths in order to correct an optical path difference in the multiplexer part 105. COPYRIGHT: (C)2005,JPO&NCIPI |
