Optical transmission system, transmitter, and control method
One aspect of the present invention is an optical transmission system including a transmitter connected to a transmission line having M spatial channels, and a receiver that receives a signal transmitted from the transmitter via the transmission line, wherein the transmitter includes: an allocator that allocates a transmission bit string transmitted to the transmission line into a bit string serving as a basic signal and a bit string serving as spatial channel information; a generator that generates N (M>N) signals from the bit string serving as the basic signal allocated by the allocator; and a selector that selects N spatial channels, through which the N signals generated by the generator are transmitted, from the M spatial channels on the basis of the bit string serving as the spatial channel information allocated by the allocator.
1 . An optical transmission system comprising: a transmitter connected to a transmission line having M spatial channels; and a receiver that receives a signal transmitted from the transmitter via the transmission line,
wherein the transmitters includes:
an allocator that allocates a transmission bit string transmitted to the transmission line into a bit string serving as a basic signal and a bit string serving as spatial channel information;
a generator that generates N (M>N) signals from the bit string serving as the basic signal allocated by the allocator; and
a selector that selects N spatial channels, through which the N signals generated by the generator are transmitted, from the M spatial channels on the basis of the bit string serving as the spatial channel information allocated by the allocator.
2 . The optical transmission system according to claim 1 ,
wherein the receiver acquires the basic signal from signals received from the N spatial channels selected by the selector.
3 . The optical transmission system according to claim 2 ,
wherein the receiver acquires the spatial channel information corresponding to the N spatial channels from the N spatial channels that have received signals.
4 . The optical transmission system according to claim 2 , the optical transmission system further comprising:
a multiplexer that wavelength-multiplexes the basic signal output from the generator and outputs the wavelength-multiplexed basic signal to the selector.
5 . The optical transmission system according to claim 2 ,
wherein a plurality of transmitters are provided, and
another multiplexer that wavelength-multiplexes signals output to the spatial channels selected by the selectors of the plurality of transmitters and output the wavelength-multiplexed signals to the receiver.
6 . The optical transmission system according to claim 2 ,
wherein the receiver obtains an unknown signal from signals received from less than M spatial channels out of the M spatial channels.
7 . The optical transmission system according to claim 1 ,
wherein the receiver acquires the spatial channel information corresponding to the N spatial channels from the N spatial channels that have received signals.
8 . The optical transmission system according to claim 7 , the optical transmission system further comprising:
a multiplexer that wavelength-multiplexes the basic signal output from the generator and outputs the wavelength-multiplexed basic signal to the selector.
9 . The optical transmission system according to claim 7 ,
wherein a plurality of transmitters are provided, and
another multiplexer that wavelength-multiplexes signals output to the spatial channels selected by the selectors of the plurality of transmitters and output the wavelength-multiplexed signals to the receiver.
10 . The optical transmission system according to claim 7 ,
wherein the receiver obtains an unknown signal from signals received from less than M spatial channels out of the M spatial channels.
11 . The optical transmission system according to claim 1 , the optical transmission system further comprising:
a multiplexer that wavelength-multiplexes the basic signal output from the generator and outputs the wavelength-multiplexed basic signal to the selector.
12 . The optical transmission system according to claim 11 ,
wherein a plurality of transmitters are provided, and
another multiplexer that wavelength-multiplexes signals output to the spatial channels selected by the selectors of the plurality of transmitters and output the wavelength-multiplexed signals to the receiver.
13 . The optical transmission system according to claim 11 ,
wherein the receiver obtains an unknown signal from signals received from less than M spatial channels out of the M spatial channels.
14 . The optical transmission system according to claim 1 ,
wherein a plurality of transmitters are provided, and
another multiplexer that wavelength-multiplexes signals output to the spatial channels selected by the selectors of the plurality of transmitters and output the wavelength-multiplexed signals to the receiver.
15 . The optical transmission system according to claim 14 ,
wherein the receiver obtains an unknown signal from signals received from less than M spatial channels out of the M spatial channels.
16 . The optical transmission system according to claim 1 ,
wherein the receiver obtains an unknown signal from signals received from less than M spatial channels out of the M spatial channels.
17 . A transmitter connected to a transmission line having M spatial channels, the transmitter comprising:
an allocator that allocates a transmission bit string transmitted to the transmission line into a bit string serving as a basic signal and a bit string serving as spatial channel information;
a generator that generates N (M>N) signals from the bit string serving as the basic signal allocated by the allocator; and
a selector that selects N spatial channels, through which the N signals generated by the generator are transmitted, from the M spatial channels on the basis of the bit string serving as the spatial channel information allocated by the allocator.
18 . A method for controlling a transmitter connected to a transmission line having M spatial channels, the method comprising:
allocating a transmission bit string transmitted to the transmission line into a bit string serving as a basic signal and a bit string serving as spatial channel information;
generating N (M>N) signals from the bit string serving as the basic signal allocated in the allocating; and
selecting N spatial channels, through which the N signals generated in the generating are transmitted, from the M spatial channels on the basis of the bit string serving as the spatial channel information allocated in the allocating.