Optical transmission system, receiving-end device, and optical transmission method

摘要

An optical transmission system includes an optical transmitting device (8) and an optical receiving device (9). The optical transmitting device (8) includes an operating channel transmitting unit (81) that transmits a first optical signal to an operating channel, and a redundant channel transmitting unit (82) that transmits a second optical signal having the same information as the first optical signal to a redundant channel. The optical receiving device (9) includes a local selection function unit (91) that has a function of selecting a wavelength of the first optical signal or the second optical signal transmitted from the optical transmitting device (8), a channel setting control unit (92) that sets a wavelength to be selected by the local selection function unit (91), and a receiving unit (93) that receives the first optical signal or the second optical signal having the wavelength selected by the local selection function unit (91).

主权项

1. An optical transmission system comprising:
an optical transmitting device; and an optical receiving device, wherein the optical transmitting device includes:
an operating channel transmitting unit that transmits a first optical signal to an operating channel; anda redundant channel transmitting unit that transmits a second optical signal having the same information as and a different wavelength from the first optical signal to a redundant channel, and the optical receiving device includes:
a local selection function unit that has a function of selecting a wavelength of the first optical signal or the second optical signal by interference of local light having the same wavelength as the first optical signal or the second optical signal transmitted from the optical transmitting device;a channel setting control unit that sets a wavelength to be selected by the local selection function unit; anda receiving unit that receives the first optical signal or the second optical signal having the wavelength selected by the local selection function unit.