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US 12,615,459 B2Granted
Optical communication system and optical communication method
AssigneeHuawei Technologies Co., Ltd.
InventorsZeshan Chang, Guangcan Mi, Han Zhao
Life of this patent
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Abstract
An optical communication system includes a sending device, an optical cross-connect (OXC) device, and a first receiving device. The sending device is configured to send a modulated first service optical signal to the OXC device. The OXC device is configured to receive the modulated first service optical signal through a first input port, and divide the modulated first service optical signal into N1 first optical signals based on a wavelength. The OXC device is configured to send M1 first optical signals to the first receiving device through M1 first output ports.
Claims20
An optical communication system, comprising:
- a sending device configured to transmit a modulated first service optical signal, wherein the modulated first service optical signal has N1 wavelengths, and wherein N1 is an integer greater than 1;
- an optical cross-connect (OXC) device comprising:
- a first input port;
- M1 first output ports, wherein M1 is an integer greater than 1;
- and
- a first modulator that is an external modulator, wherein the first modulator is configured to:
- receive the first service optical signal;
- and
- modulate the first service optical signal to obtain the modulated first service optical signal, and wherein the OXC device is configured to:
- receive the modulated first service optical signal through the first input port;
- divide the modulated first service optical signal into N1 first optical signals with different wavelengths of the N1 wavelengths;
- and
- transmit M1 second optical signals in the N1 first optical signals through the M1 first output ports, wherein each of the M1 second optical signals is a single-wavelength optical signal, and wherein all of the M1 second optical signals carry a same data signal;
- and
- a first receiving device configured to receive the M1 second optical signals, and wherein the sending device further comprises a first wavelength selector that is configured to:
- receive a third optical signal with H different wavelengths, wherein H is an integer greater than N1;
- and
- send a first service optical signal based on the third optical signal, wherein the first service optical signal has N1 different wavelengths.
15 more elements
An optical communication method, comprising:
- receiving, by an optical cross-connect (OXC) device through a first input port, a modulated first service optical signal, wherein the modulated first service optical signal has N1 different wavelengths, and wherein N1 is an integer greater than 1;
- dividing, by the OXC device, the modulated first service optical signal into N1 first optical signals with N1 different wavelengths, wherein each of the N1 first optical signals is a single-wavelength optical signal, and wherein all of the N1 first optical signals carry a same data signal;
- transmitting, by the OXC device through M1 first output ports, M1 second optical signals in the N1 first optical signals to a first receiving device, wherein M1 is an integer greater than 1;
- receiving, by the OXC device, a modulated second service optical signal through a second input port of the OXC device, wherein the modulated second service optical signal has N2 different wavelengths, and wherein N2 is an integer greater than 1;
- dividing, by the OXC device, the modulated second service optical signal into N2 third optical signals with different wavelengths, wherein each of the N2 third optical signals has a single-wavelength, wherein all of the N2 third optical signals carry the same data, and wherein each of the N2 third optical signals is a different data signal than the M1 second optical signals;
- and
- transmitting, by the OXC device, M2 fourth optical signals in the N2 third optical signals to a second receiving device through M2 second output ports, wherein M2 is an integer greater than 1.
4 more elements
An optical communication method, comprising:
- receiving, by a sending device, a first optical signal with H different wavelengths;
- obtaining, by the sending device, a first service optical signal based on the first optical signal, wherein the first service optical signal has N1 different wavelengths, and wherein H is an integer greater than N1;
- modulating, by the sending device, the first service optical signal to obtain a modulated first service optical signal;
- transmitting, by the sending device, the modulated first service optical signal, wherein the modulated first service optical signal has N1 wavelengths, and wherein N1 is an integer greater than 1;
- receiving, by an optical cross-connect (OXC) device, the modulated first service optical signal through a first input port of the OXC device;
- dividing, by the OXC device, the modulated first service optical signal into N1 first optical signals with different wavelengths of the N1 wavelengths;
- and
- transmitting, by the OXC device, M1 second optical signals in the N1 first optical signals to a first receiving device through M1 first output ports of the OXC device,
- wherein M1 is an integer greater than 1,
- wherein each of the M1 second optical signals is a single-wavelength optical signal, and
- wherein all of the M1 second optical signals carry a same data signal.
8 more elements
Dependencies are inferred from the claim text.