| 摘要 |
PROBLEM TO BE SOLVED: To easily build optical components in a module body from outside without opening the module body by forming an opening part for module storage for storing the optical component module inside at a module-body side part. SOLUTION: At the part on the side of the module body 11, an opening part 18 for operation and an optical fiber opening 20 for linking an optical fiber to the inside and outside of the module body 11 are formed at a distance from each other. In an optical component storage space 17, a module storage space 17b for storing the optical component module 29 having optical components such as an optical coupler 27 and an optical filter 28 inside is sectioned by guide walls 11d and 11e. Into this module storage space 17b, the optical component module 29 is slid and inserted from the opening part 30 for module storage linked to the opening part 18 for operation so that it can be taken out.
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