Spectrally interleaved optical transceivers

An optical transceiver, comprising:

• a transmitter comprising a first bus waveguide and a plurality of optical modulators coupled to the first bus waveguide, each of the plurality of optical modulators being resonant at a respective wavelength in a first wavelength set;
• a receiver comprising a second bus waveguide and a plurality of optical filters coupled to the second bus waveguide, each of the plurality of optical filters being resonant at a respective wavelength in a second wavelength set;
• an input/output (I/O) port configured to be coupled to an optical channel, wherein the I/O port forms part of a transmit path coupling the transmitter to the optical channel when the optical channel is coupled to the I/O port and wherein the I/O port forms part of a receive path coupling the receiver to the optical channel when the optical channel is coupled to the I/O port;
• an optical interleaver configured to:
• selectively couple light having carrier wavelengths in the first wavelength set from the first waveguide bus to the I/O port, and
• selectively couple light having carrier wavelengths in the second wavelength set from the I/O port to the second bus waveguide;
• and
• an optical polarization controller coupled between the I/O port and the optical interleaver, wherein the optical polarization controller is configured to provide a pair of output transverse electric (TE) modes to the optical interleaver upon receiving an input TE mode and an input transverse magnetic (TM) mode from the optical channel when the optical channel is coupled to the I/O port.

An optical transceiver, comprising:

• a transmitter comprising a first bus waveguide and a plurality of optical modulators coupled to the first bus waveguide, each of the plurality of optical modulators being resonant at a respective wavelength in a first wavelength set;
• a receiver comprising a second bus waveguide and a plurality of optical filters coupled to the second bus waveguide, each of the plurality of optical filters being resonant at a respective wavelength in a second wavelength set;
• an input/output (I/O) port configured to be coupled to an optical channel, wherein the I/O port forms part of a transmit path coupling the transmitter to the optical channel when the optical channel is coupled to the I/O port and wherein the I/O port forms part of a receive path coupling the receiver to the optical channel when the optical channel is coupled to the I/O port;
• and
• an optical interleaver configured to:
• selectively couple light having carrier wavelengths in the first wavelength set from the first waveguide bus to the I/O port, and
• selectively couple light having carrier wavelengths in the second wavelength set from the I/O port to the second bus waveguide,
• wherein the carrier wavelengths in the first wavelength set are spaced from one another by a spectral separation in a range of 1.72 nm-2.86 nm and the carrier wavelengths in the second wavelength set are spaced from one another by a spectral separation in a range of 1.72 nm-2.86 nm.

An optical transceiver, comprising:

• a transmit bus waveguide and a plurality of optical resonant modulators coupled to the transmit bus waveguide;
• a receive bus waveguide and a plurality of optical resonant filters coupled to the receive bus waveguide;
• and
• an asymmetric Mach Zehnder interferometer (MZI) having a first end and a second end opposite the first end, wherein the first end comprises a first waveguide coupled to the transmit bus waveguide and a second waveguide coupled to the receive bus waveguide, and wherein the second end comprises a third waveguide, wherein the asymmetric MZI comprises a plurality of stages defining a plurality of optical path length differences,
• wherein the optical path length differences are configured to cause the asymmetric MZI to:
• selectively couple light having carrier wavelengths in a first wavelength set from the first waveguide to the third waveguide, and
• selectively couple light having carrier wavelengths in a second wavelength set from the third waveguide to the second waveguide,
• wherein the carrier wavelengths of the first wavelength set alternate with the carrier wavelengths of the second wavelength set.