DocumentCode
946026
Title
Time-wavelength spectroscopy for chemical sensing
Author
Chou, Jason ; Han, Yan ; Jalali, Bahram
Author_Institution
Optoelectronic Circuits & Syst. Lab., Univ. of California Los Angeles, CA, USA
Volume
16
Issue
4
fYear
2004
fDate
4/1/2004 12:00:00 AM
Firstpage
1140
Lastpage
1142
Abstract
Time-wavelength spectroscopy, using a linearly chirped broad-band pulse, eliminates the need for an optical spectrometer and enables real-time analysis. Utilizing digital filtering and matched detection, we demonstrate identification of gas signatures that are entirely masked by highly nonuniform source spectra.
Keywords
chirp modulation; digital filters; gas sensors; infrared spectroscopy; matched filters; optical pulse generation; signal processing; time-domain analysis; chemical sensing; digital filtering; gas signatures; linearly chirped broad-band pulse; matched detection; real-time analysis; time-wavelength spectroscopy; Absorption; Chemicals; Optical distortion; Optical filters; Optical noise; Optical sensors; Optical signal processing; Radio frequency; Spectroscopy; Time domain analysis;
fLanguage
English
Journal_Title
Photonics Technology Letters, IEEE
Publisher
ieee
ISSN
1041-1135
Type
jour
DOI
10.1109/LPT.2004.824997
Filename
1281897
Link To Document