OPTICAL TRANSMITTER, OPTICAL RECEIVER, AND TRANSMITTING/RECEIVING-MODE SWITCHING METHOD

摘要

PROBLEM TO BE SOLVED: To provide an optical transmitting system for improving quality of data transmission by switching a mode of an initial setting in a transmitter/receiver to estimate a state of an optical signal using a known signal, and a mode of data transmission.

SOLUTION: An optical transmitter transmits the optical signal to an optical receiver through an optical transmitting channel. The optical transmitter is equipped with: a known-signal generator to generate the known signal having a known pattern; a transmitting-mode switching switch to switch between a known-signal transmitting mode for transmitting only the known signal, and a data-transmitting mode for transmitting a frame comprising a payload and the known pattern; a transmitting-mode controller to control switching to a mode-switching switch on the basis of a received transmitting-mode controlling signal; and a signal transmitter to convert either the known signal or the data signal to the optical signal for transmitting it, in accordance with the known-signal transmitting mode or the data-transmitting mode.

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