Optical link protection using common modulation of multiple combined wavelengths

A system comprising,

• an optical transmitter configured to:
• generate a multi-carrier wave comprising a first carrier wave and a second carrier wave,
• generate an input data signal,
• modulate the multi-carrier wave with the input data signal to provide a modulated multi-carrier signal, and
• provide first and second optical signals, from the modulated multi-carrier signal, to corresponding first and second optical links,
• the first optical signal having a first wavelength corresponding to the first carrier wave,
• the second optical signal having a second wavelength corresponding to the second carrier wave;
• an optical receiver configured to:
• receive the first and second optical signals via the first and second optical links, and
• generate, based on a particular optical signal of the first and second optical signals, an output data signal corresponding to the input data signal.

A method, comprising:

• providing, by a device, an optical signal,
• the optical signal being associated with a group of wavelengths;
• providing, by the device, a data signal;
• modulating, by the device, the optical signal with the data signal to provide a modulated optical signal;
• separating, by the device, a first optical signal and a second optical signal from the modulated optical signal,
• the first optical signal being associated with a first wavelength of the group of wavelengths,
• the second optical signal being associated with a second wavelength of the group of wavelengths;
• providing, by the device, the first optical signal to a first optical link,
• the first optical link being associated with the first wavelength;
• and
• providing, by the device, the second optical signal to a second optical link,
• the second optical link being associated with the second wavelength.