Patent ID: 7280756

Claim:
An optical signal transmission system including at least one optical signal transmitter and at least one optical signal receiver, wherein said at least one optical signal transmitter generates at least one optical identifier belonging to and being different in wavelength from at least one main optical signal; wherein said at least one optical signal transmitter performs a wavelength-multiplexing of said at least one main optical signal and said at least one optical identifier to transmit at least one wavelength-multiplexed optical signal to said at least one optical signal receiver; wherein said at least one optical signal receiver performs a wavelength-demultiplexing of said at least one wavelength-multiplexed optical signal to generate said at least one main optical signal and said at least one optical identifier; and wherein said at least one optical signal receiver further verifies whether a correct transmission route is established, based on said at least one optical identifier with reference to at least one set of corresponding data, which include a first relationship in correspondence between said at least one main optical signal and said at least one optical identifier.