Non-volatile optical memory bank with iii-v/si micro-ring laser arrays

An optical system comprising:

• a bus waveguide;
• a plurality of unit cells coupled to bus waveguide, wherein each of the plurality of unit cells comprises a respective resonator structure having a respective waveguide integrated with a respective light emitting device and a respective non-volatile memory device;
• and
• one or more power sources electrically connected to the plurality of unit cells, the one or more power sources configured to, for each unit cell:
• apply a respective seed voltage that causes the respective light emitting device to emit light at a respective first wavelength;
• and
• apply a respective first voltage bias across the respective non-volatile memory device to permanently shift a wavelength of the light to a respective shifted wavelength,
• wherein each unit cells couples light into the bus waveguide at a respectively different shifted wavelength.

A method comprising:

• applying a seed voltage bias to a light emitting device of an optical device to cause the light emitting device to emit light at a first wavelength, wherein the light emitting device emits light into a waveguide of the optical device;
• applying a first voltage bias to a charge trap memory (CTM) device integrated with the light emitting device to cause a non-volatile wavelength shift of the light, emitted by the light emitting device, to a second wavelength;
• and
• applying a second voltage bias to the CTM device to cause to shift the wavelength of the light, emitted by the light emitting device, to the first wavelength, wherein a polarity of the first voltage bias is opposite to a polarity of the second voltage bias,
• wherein the CTM device and the light emitting device are formed in the waveguide.