System and Method for a Multi-Wavelength Coherent Receiver

摘要

Embodiments are provided for a novel multi-wavelength coherent receiver (MWCR) design and operation capable of detecting multiple optical wavelength channels. The embodiments include an optical receiver comprising a polarization-diversity optical hybrid module, a multiple wavelength local oscillator (MWLO) coupled to an input of the polarization-diversity optical hybrid module, a plurality of PIN diodes coupled to the polarization-diversity optical hybrid module, a plurality of analog-to-digital converters (ADCs) coupled to the PIN diodes, and a digital signal processing (DSP) module coupled to the ADCs. The polarization-diversity optical hybrid module splits an optical signal into multiple polarization components, wherein the optical signal includes multiple channels at multiple wavelengths. The MWLO locks the optical signal to the multiple wavelengths of the channels simultaneously. The DSP combines the signals from the ADCs corresponding to the polarization components and detects the channels at the wavelengths.

主权项

1. A method by an optical receiver for multiple wavelength coherent reception, the method comprising:
receiving an optical signal including multiple channels at multiple wavelengths; selecting the channels in accordance with input from a multiple wavelength local oscillator (MWLO), the input from the MWLO locks the signal to the multiple wavelengths of the channels simultaneously; splitting the signal into multiple polarization components; separating the channels in the polarization components using digital signal processing (DSP); performing chromatic dispersion compensation (CDC) on the channels; and performing time domain equalization on each of the channels.