Dual-polarization multi-wavelength coherent receiver frontend

摘要

An apparatus includes an AWG demultiplexer having first and second adjacent input ports. The first input port is configured to receive a first WDM data-bearing signal, the second input port is configured to receive a first WDM LO signal. The first and second input ports are located such that individual channels of said WDM data-bearing signal route to a first set of output ports, and individual channels of said WDM LO signal route to a second set of output ports interleaved with the first set.

主权项

1. An apparatus, comprising:
an arrayed waveguide grating (AWG) demultiplexer having an input slab having:
a first set of input ports each configured to receive individual channels of a first set of wavelength division multiplexing (WDM) data-bearing signals of a first polarization;a second set of input ports each configured to receive individual channels of a first set of WDM local oscillator (LO) signals of said first polarization, wherein said first set of input ports and said second set of input ports are adjacent to and interleaved with each other;a third set of input ports configured to receive individual channels of a second set of WDM data-bearing signals of a second polarization; anda fourth set of input ports configured to receive individual channels of a second set of WDM LO signals of said second polarization, wherein said third set of input ports and said fourth set of input ports are adjacent to and interleaved with each other, and, said first set of input ports and said second set of input ports are disjoint from said third set of input ports and said fourth set of input ports.