PHOTONIC LOCK BASED HIGH BANDWIDTH PHOTODETECTOR

摘要

The technique introduced herein decouples the traditional relationship between bandwidth and responsivity, thereby providing a more flexible and wider photodetector design space. In certain embodiments of the technique introduced here, a photodetector device includes a first mirror, a second mirror, and a light absorption region positioned between the first and second reflective mirrors. For example, the first mirror can be a partial mirror, and the second mirror can be a high-reflectivity mirror. The light absorption region is positioned to absorb incident light that is passed through the first mirror and reflected between the first and second mirrors. The first mirror can be configured to exhibit a reflectivity that causes an amount of light energy that escapes from the first mirror, after the light being reflected back by the second mirror, to be zero or near zero.

主权项

1. A photodetector device comprising:
a first reflective region; a second reflective region; and a light absorption region positioned between the first and second reflective regions so as to absorb light passed through the first reflective region and reflected between the first and second reflective regions, wherein the first reflective region has a reflectivity that causes an amount of light energy that escapes from the first reflective region, after the light being reflected by the second reflective region, to be substantially zero.