| 摘要 |
A parallel optical data transmission device has an optical signal emitting unit (10), an optical signal reception unit (20), and a parallel optical signal transmission cable (30) for optically coupling therebetween. The optical signal emitting unit (10) has an array of semiconductor lasers (14), whereas the reception unit (20) has an array of semiconductor photodetectors (24) of the same number. The transmission cable (30) essentially consists of optical fibers bundled together. In the optical signal emitting unit (10), electrical drive signal transfer lines (18) for the lasers (14) have a stair-step bending pattern such that their transmission lengths sequentially vary. In the optical reception unit (20), electrical signal transmission lines (28) for the photodetectors (24) likewise has a stair-step bending pattern such that their transmission lengths sequentially differ, this stair-step pattern is like a reversed version of the stair-step pattern in the optical signal emitting unit (10), whereby the total lengths of electrical signal transmission line paths are made equal to one another for the respective transmission channels, thus ensuring compensation for a delay in parallel signal transmission. |
