Patent ID: 9310561
Filing Date: 2016-04-12
CPC Classification: G02B,G02F,H01S

Claim Text:
1. An apparatus comprising: a first waveguide, comprising a first cross-sectional area, to receive a light produced from a first polarization state and propagate a first optical mode; a second waveguide, adjacent to the first waveguide, to receive a light produced from a second polarization state, orthogonal to the first polarization state, and propagate a second optical mode, wherein the second waveguide comprises a second cross-sectional area different than the first waveguide; and a region, disposed over the first and second waveguides, to absorb or amplify light from the first and second waveguides, wherein the region comprises at least one of an absorption region, a gain region, a phase shift region, or a variable refractive index overlap region; wherein an absorption, gain, or modal coefficient for light comprising the second optical mode is equal to an absorption, gain, phase, or modal coefficient for light comprising the first optical mode.