Optical spectroscopy device, process of making the same, and method of using the same

摘要

An optical spectroscopy device includes a first cladding layer is positioned over a photodetector. An optical core region is over the first cladding layer where the optical core region is configured to receive a light beam. The optical core region includes a first grating having a first pitch where the first pitch is positioned to direct a first wavelength of the light beam to a first portion of the photodetector. The optical core region further includes a second grating having a second pitch where the second grating is positioned to direct a second wavelength of the light beam to a second portion of the photodetector. The first pitch is different from the second pitch, the first wavelength is different from the second wavelength, and the first portion of the photodetector is different from the second portion of the photodetector. Additionally, a second cladding layer is over the optical core region.

主权项

1. A device comprising:
a first cladding layer over a photodetector; an optical core region over the first cladding layer, the optical core region comprising:
a first grating having a first pitch, the first grating being proximate a first portion of the photodetector; anda second grating having a second pitch, the second grating being proximate a second portion of the photodetector, the first pitch being different from the second pitch, the first portion of the photodetector being different from the second portion of the photodetector; and a second cladding layer over the optical core region.