Patent ID: 9671288
Date: 2017-06-06
CPC Classifications: G01J,G01N,H01L

Claim:
1. A photodetector, comprising: a first photodiode that absorbs a first portion of incident light in a first depletion region, the first photodiode generating a photocurrent responsive to the absorbed first portion of incident light; and a second photodiode that absorbs a second portion of the incident light in a second depletion region, the absorbed second portion comprises a portion of the incident light not including the first portion of the incident light, wherein a spectral response of the photocurrent is controlled based at least in part on a first bias voltage applied between a first cathode contact coupled with a first cathode region of the first photodiode and a common anode contact coupled with a common anode region of the first photodiode and the second photodiode.