| 摘要 |
PROBLEM TO BE SOLVED: To provide the optical communication equipment which is improved in the reliability by extending the service life of a light source and by which a power supply line to generate an optical signal is not required. SOLUTION: A light source 10 emits a light over a wide wavelength band and is always lighted in the system operation. With a switch 21 closed in a transmission section T×1, a light with a wavelength λ branched and reflected by a branch filter 11T is interrupted by a switch 21 and the light except that with the wavelength λamong lights over a wide wavelength band from the light source 10 is sent to reception section R×1, R×2 via a transmission section T×2 at the post-stage When the switch 21 of the corresponding transmission section Tx1 is closed in the reception section Rx1, a light receiving element 31 does not receive the light with the wavelength λ, a reception section Rx2 of a next stage receives a light with a wavelength λ2 regardless that the switch 21 of the transmission section T×1 not corresponding to the reception section is closed/open, and does not receive the light with the wavelength λ2 when the switch 22 of the corresponding transmission section T×2 is closed. |
