Patent ID: 9166700
Filing Date: 2015-10-20
Classification: H04B,H04J

Abstract:
1. A receiver comprising: a tunable local oscillator configurable to select for demodulation any one of a plurality of wavelength-division-multiplexed (WDM) channels of a multi-channel optical signal by being tuned, based on a wavelength schedule that is based on input queue length information received from optical system nodes, to generate a local oscillator signal approximately centered at a WDM-channel wavelength corresponding to a WDM channel selected for demodulation, said WDM channel selected for demodulation being a WDM channel of said plurality of WDM channels; and an optical hybrid configurable to receive at a first input the local oscillator signal, and at a second input the multi-channel optical signal, the optical hybrid being configured to output in-phase and quadrature components of the WDM channel selected for demodulation; and wherein the receiver is configured to recover data carried by the WDM channel selected for demodulation based on the in-phase and quadrature components output by the optical hybrid.