OPTICAL TRANSMITTER, OPTICAL RECEIVER, OPTICAL TRANSMISSION METHOD, OPTICAL RECEPTION METHOD, AND OPTICAL TRANSMISSION SYSTEM
摘要
<P>PROBLEM TO BE SOLVED: To distinguish trouble caused in an optical transmission line or an optical transmitter form trouble caused based on a data signal to be transmitted. <P>SOLUTION: An optical transmitter includes: signal generating means outputting a signal having a frequency component different from that of a data signal at the time when the data signal to be transmitted is not detected; and light emitting means driven based on at least one of the data signal and the output of the signal generating means. <P>COPYRIGHT: (C)2012,JPO&INPIT
