Optical device having light sensor with doped regions

摘要

The optical device includes a waveguide on a base. The waveguide is configured to guide a light signal through a light-transmitting medium to a light sensor. The light sensor includes a sensor waveguide on the base. The sensor waveguide receives the light signal from the input waveguide. Additionally, the sensor waveguide includes a light-absorbing medium having an input side. The input side is interfaced with the light-transmitting medium such that at least a portion of the light signal received by the sensor waveguide travels through the input side of the light-absorbing medium upon being received by the sensor waveguide. The light-absorbing medium includes doped regions. One or more of the doped regions each extends from within the light-absorbing medium to the input side of the light-absorbing medium.

主权项

1. An optical device, comprising:
an input waveguide on a base, the input waveguide configured to guide a light signal through a light-transmitting medium to a light sensor; and the light sensor including
a sensor waveguide on the base,the sensor waveguide receives the light signal from the input waveguide,the sensor waveguide includes a light-absorbing medium having an input side interfaced with the light-transmitting medium such that at least a portion of the light signal received by the sensor waveguide travels through the input side of the light-absorbing medium, the light-absorbing medium having lateral sides connecting a bottom side and a top side such that the bottom side is between the base and the top side, the input side being one of the lateral sides,the light-transmitting medium and the light-absorbing medium being different materials,the light-absorbing medium including doped regions, one or more of the doped regions each extending from within the light-absorbing medium across the input side of the light-absorbing medium and into the light-transmitting medium beyond the input side.