Method and system for eliminating polarization dependence for 45 degree incidence MUX/DEMUX designs

A system for communication, the system comprising:

• an optical transceiver comprising a beam splitter and a plurality of filters arranged above corresponding grating couplers in a photonic die, the optical transceiver being operable to:
• receive an optical signal comprising a plurality of different wavelength signals;
• split the optical signal into signals of a first polarization and signals of a second polarization using the beam splitter by separating the signals of the second polarization laterally from the signals of the first polarization;
• communicate the signals of the first polarization and the second polarization to the plurality of filters;
• reflect, using a first filter of the plurality of filters, the signals of the first polarization to a first corresponding grating coupler of the corresponding grating couplers;
• communicate, using the first filter, the signals of the second polarization to a second filter of the plurality of filters;
• and
• reflect, using the second filter, the signals of the second polarization to a second corresponding grating coupler of the corresponding grating couplers.

A system for communication, the system comprising:

• an optical transceiver comprising a photonic die and a plurality of filters arranged above corresponding grating couplers in the photonic die, the optical transceiver being operable to:
• receive an optical signal comprising a plurality of different wavelength signals;
• communicate the optical signal to the plurality of filters;
• reflect, using a first filter of the plurality of filters, a first signal of the plurality of different wavelength signals to a first corresponding grating coupler of the corresponding grating couplers;
• communicate, using the first filter, a second signal of the plurality of different wavelength signals to a second filter of the plurality of filters;
• and
• reflect, using the second filter, the second signal to a second corresponding grating coupler of the corresponding grating couplers.