OPTICAL TRANSMITTER/RECEIVER AND OPTICAL TRANSMISSION SYSTEM

摘要

The present invention is provided with: an optical input power monitoring means (116) which detects optical input power of optical signals received by means of a receiving unit (114); and a power control means (118) which, on the basis of the optical input power detected by means of the optical input power monitoring means (116), controls optical output power of a transmitting unit (115) corresponding to a distance to an opposite apparatus.