| 摘要 |
PROBLEM TO BE SOLVED: To suppress the influence of crosstalk between channels without increasing the layout area on a chip by providing a groove for optical fiber fixation between an IC part for optical reception and an adjacent IC part. SOLUTION: To guide light in photodiodes 6a and 6b with efficiency, optical fibers 3a and 3b which are fixed in optical fiber fixation grooves 2a and 2b while having their optical axes aligned, photodiodes 6a and 6b which are formed in planar structure in the silicon substrate 1, and ICs 4a and 4b for reception which amplify and encode signals after optoelectric conversion by the photodiodes 6a and 6b are formed on the same silicon substrate 1. In this case, the optical fiber fixation groove 2b is present between a transistor 5a which constitutes the reception IC 4a in a channel l and a transistor 5b which constitutes a reception IC 4b in a channel 2, so a noise signal generated from the channel l becomes harder to propagate than that in the absence of the groove. |
