Patent ID: 8494314
Filing Date: 2013-07-23
Classification: G02B

Abstract:
1. A waveguide, comprising: a first semiconductor layer having a width and a length, first and second sides of the first semiconductor layer defining the width of the semiconductor layer; and a second semiconductor layer disposed adjacent to the first semiconductor layer, the second semiconductor layer having first and second sides each extending from the first side of the first semiconductor layer to the second side of the semiconductor layer, a first distance extending perpendicularly from the first side of the first semiconductor layer to the first side of the second semiconductor layer increasing along a first portion of the length of the first semiconductor layer, a second distance extending perpendicularly from the first side of the first semiconductor layer to the second side of the second semiconductor layer increasing along a second portion of the length of the first semiconductor layer, wherein the waveguide includes an input and an output, the waveguide is configured to receive light at the input, the waveguide inducing rotation of a polarization of the light from a first polarization state to a second polarization state as the light propagates along the length of the first semiconductor layer adjacent to the second semiconductor layer.