| 摘要 |
PROBLEM TO BE SOLVED: To provide the optical communication network which can inspect a branch light beam path while suppressing the loss of inspection light. SOLUTION: This optical communication network is equipped with a signal source 12 which outputs communication light, a trunk light beam path 20 which is connected to the signal source 12, an optical tap 30 which has a trunk waveguide 32 connected to the trunk light beam path 20, and branch light beam paths 241 to 244 connected to respective branch waveguides 341 to 344 connected to the respective branch waveguides 341 to 344 of the optical tap 30. At respective confluence places of the optical tap 30 between the trunk waveguide 32 and branch waveguides 341 to 344 , reflection parts 381 to 384 are provided which reflect light necessary wavelength. The respective reflection parts 381 to 384 reflect light of 1st wavelength and light of 23nd wavelength different from each other among those reflection parts from one of the trunk waveguide 32 and branch waveguides 341 to 344 to the other. |
