US 12,744,600 B2 · Optical transmission method and apparatus

Abstract

This application provides an optical transmission method and apparatus, and relates to the communication field. A first optical transmission apparatus includes a first circulator and a first receiving module. The first receiving module is connected to the first circulator. The first circulator is configured to receive a second unmodulated optical signal from a second optical transmission apparatus. The first receiving module is configured to receive a second modulated optical signal from the second optical transmission apparatus, and receive the second unmodulated optical signal from the first circulator. The second modulated optical signal is obtained by modulating a first unmodulated optical signal, the second unmodulated optical signal is used to perform coherence detection on the second modulated optical signal, and the third unmodulated optical signal is an optical signal provided by the first optical transmission apparatus to the second optical transmission apparatus.

Claims20

Dependent claims

A first optical transmission apparatus, comprising:

a first circulator, configured to receive a second unmodulated optical signal from a second optical transmission apparatus;
and
a first receiver, connected to the first circulator, and configured to:
receive a second modulated optical signal from the second optical transmission apparatus;
and
receive the second unmodulated optical signal from the first circulator, wherein the second modulated optical signal is obtained by modulating a first unmodulated optical signal, the second unmodulated optical signal is used to perform coherence detection on the second modulated optical signal, the first unmodulated optical signal and the second unmodulated optical signal are obtained by separating a third unmodulated optical signal, and the third unmodulated optical signal is provided by the first optical transmission apparatus to the second optical transmission apparatus.

3 more elements

A second optical transmission apparatus, comprising:

a second coupler, configured to separate a third unmodulated optical signal into at least a first unmodulated optical signal and a second unmodulated optical signal, wherein the third unmodulated optical signal is provided by a first optical transmission apparatus;
a second transmitter, connected to the second coupler, and configured to send a second modulated optical signal to the first optical transmission apparatus, wherein the second modulated optical signal is obtained by modulating the first unmodulated optical signal;
and
a second circulator, connected to the second coupler, and configured to receive the second unmodulated optical signal from the second coupler, and send the second unmodulated optical signal to the first optical transmission apparatus, wherein the second unmodulated optical signal is used for coherence detection of the second modulated optical signal.

1 more element

A method, applied to a first optical transmission apparatus, the first optical transmission apparatus comprising a first circulator and a first receiver, and the method comprises:

receiving, by the first circulator, a second unmodulated optical signal from a second optical transmission apparatus;
and
receiving, by the first receiver, a second modulated optical signal from the second optical transmission apparatus, and receiving the second unmodulated optical signal from the first circulator, wherein the second modulated optical signal is obtained by modulating a first unmodulated optical signal, the second unmodulated optical signal is used to perform coherence detection on the second modulated optical signal, the first unmodulated optical signal and the second unmodulated optical signal are obtained by separating a third unmodulated optical signal, and the third unmodulated optical signal is provided by the first optical transmission apparatus to the second optical transmission apparatus.

Dependencies are inferred from the claim text.

Optical transmission method and apparatus

Life of this patent

Optical transmission method and apparatus

Life of this patent

Abstract

Claims20