Chip-scale broadband spectroscopic chemical sensing using an integrated supercontinuum source in a chalcogenide glass waveguide
Name
prj-6-6-506.pdf
Description
Published version
Size
1.01 MB
Format
Unknown
Checksum (MD5)
cf8429a1f95cca0bb48ee08b21097ddf
Author(s)
Du, Qingyang
Luo, Zhengqian
Zhong, Huikai
Zhang, Yifei
Huang, Yizhong
Du, Tuanjie
Zhang, Wei
Gu, Tian
Hu, Juejun
Date Issued
April 2018
Journal
Photonics Research
Publisher
The Optical Society
Version
Final published version
Abstract
© 2018 Chinese Laser Press. On-chip spectroscopic sensors have attracted increasing attention for portable and field-deployable chemical detection applications. So far, these sensors largely rely on benchtop tunable lasers for spectroscopic interrogation. Large footprint and mechanical fragility of the sources, however, preclude compact sensing system integration. In this paper, we address the challenge through demonstrating, for the first time to our knowledge, a supercontinuum source integrated on-chip spectroscopic sensor, where we leverage nonlinear Ge22Sb18Se60 chalcogenide glass waveguides as a unified platform for both broadband supercontinuum generation and chemical detection. A home-built, palm-sized femtosecond laser centering at 1560 nm wavelength was used as the pumping source. Sensing capability of the system was validated through quantifying the optical absorption of chloroform solutions at 1695 nm. This work represents an important step towards realizing a miniaturized spectroscopic sensing system based on photonic chips.
MIT Department
Massachusetts Institute of Technology. Department of Materials Science and Engineering
Terms of Use
Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1364/prj.6.000506
