Patent ID: 6654562
Filing Date: 2003-11-25
Classification: H04J,H04L

Abstract:
An optical transmission system, comprising a transmitting-end optical transmission device, a receiving-end optical transmission device and an optical transmission line connecting the transmitting-end and receiving-end optical transmission devices,the transmitting-end optical transmission device comprising: encoding means, having n outputs, for forming k data by aligning phases of data on k channels with each other and for generating (nâˆ’k) error correction bits for said k data and adding said (nâˆ’k) error correction bits to said k data, said (nâˆ’k) error correction bits being in parallel with said k data, and wavelength-multiplexing means, connected to the encoding means, for converting both said k data and said (nâˆ’k) error correction bits to n optical signals having different wavelengths and for wavelength-multiplexing said n optical signals so as to be delivered to the optical transmission line; and the receiving-end optical transmission device comprising: wavelength-demultiplexing means for separating the wavelength-multiplexed optical signals from the optical transmission line into n optical signals, each corresponding to one of the different wavelengths, and decoding means connected to the wavelength-demultiplexing means, for generating k error corrected data by correcting error bits using the (nâˆ’k) error correction bits contained in said n separated optical signals.