Title :
Real time chemical detection using time-wavelength spectroscopy technique
Author :
Chou, Jason ; Han, Yan ; Jalali, Bahram
Author_Institution :
Optoelectronic Circuits & Syst. Lab., California Univ., Los Angeles, CA, USA
Abstract :
A sensing technique, based on time-wavelength spectroscopy and digital signal processing, is demonstrated through the detection of carbon monoxide. The system utilizes a linearly chirped broadband pulse to identify chemical and biochemical spectra. The main advantages of this method are the absence of an optical spectrometer and the possibility of real-time spectral analysis.
Keywords :
carbon compounds; chirp modulation; gas sensors; infrared spectroscopy; signal processing; spectral analysis; CO; IR spectral analysis; biochemical spectra; carbon monoxide detection; chemical spectra; digital signal processing; linearly chirped broadband pulse; optical spectrometer; real time chemical detection; real-time spectral analysis; time-wavelength spectroscopy; Biomedical optical imaging; Chemicals; Chirp; Digital signal processing; Gas detectors; Optical pulses; Optical sensors; Optical signal processing; Spectral analysis; Spectroscopy;
Conference_Titel :
Measurement Systems for Homeland Security, Contraband Detection and Personal Safety Workshop, 2005. (IMS 2005) Proceedings of the 2005 IEEE International Workshop on
Print_ISBN :
0-7803-9121-7
DOI :
10.1109/MSHS.2005.1502560
