Optical transmission apparatus and optical transmission method

摘要

An optical transmission apparatus includes a transmitter that transmits to a counterpart receiver via a transmission path and transmits as optical signals for a plurality of channels, input signals for a plurality of channels; and a controller that when a transmission failure between the transmitter and the receiver is detected, distributes to properly operating channels, data for a channel subject to the transmission failure, increases a transmission rate for the properly operating channels to a given transmission rate, and continues data transmission for all channels including the channel subject to the transmission failure.

主权项

1. An optical transmission apparatus comprising:
a transmitter that transmits to a counterpart receiver via a transmission path and transmits as optical signals for a plurality of channels, input signals for a plurality of channels; and a controller that when a transmission failure between the transmitter and the receiver is detected, distributes to properly operating channels, data for a channel subject to the transmission failure, increases a transmission rate for the properly operating channels to a given transmission rate, and continues data transmission for all channels including the channel subject to the transmission failure, wherein the transmitter includes:
a data buffer provided for each channel;a switching element that switches routes of data output from the data buffer; andan electro/optical converting element that converts data for a switched route, from electronic data to optical data, the data buffer appends a first channel identifier and a second channel identifier to the data for all channels, the first channel identifier indicating a channel to which data for the channel subject to the transmission failure is to be distributed and the second channel identifier indicating to which channel distributed data originally belongs, and the switching element switches the routes of the data based on the first channel identifier; and the transmitter divides the data for the channel subject to the transmission failure into given data units and transmits each of the data units, using vacant time slots of the properly operating channels, not occupied by data to be transmitted.