CMOS integrated optical sensor using phase detection

Author

Chodavarapu, Vamsy P. ; Khanolkar, Supriya P. ; Tehan, Elizabeth C. ; Titus, Albert H. ; Cartwright, Alexander N. ; Bright, Frank V.

Author_Institution

Dept. of Electr. Eng., State Univ. of New York, Buffalo, NY, USA

Volume

2

fYear

2003

fDate

22-24 Oct. 2003

Firstpage

1266

Abstract

In this paper, we present an integrated fiber optic sensor based on a phase detection technique. The operation principle of the sensor as a xerogel based oxygen sensor has been demonstrated The integrated device includes a light emitting diode, an oxygen sensing probe and a CMOS Integrated Circuit (IC). The CMOS IC combines the LED driver circuitry, optical detector and the phase detector circuitry on a single chip. The integrated sensor provides accurate, low cost and low power detection for quantifying oxygen and for recording excited-state lifetimes ranging from nanoseconds to milliseconds.

Keywords

CMOS image sensors; CMOS integrated circuits; chemical sensors; fibre optic sensors; oxygen; CMOS IC; CMOS integrated optical sensor; LED driver circuitry; excited-state lifetimes; integrated fiber optic sensor; integrated sensor; light emitting diode; optical detector; oxygen sensor; phase detection; phase detector circuitry; xerogel; CMOS integrated circuits; Costs; Driver circuits; Light emitting diodes; Optical detectors; Optical fiber sensors; Optical sensors; Phase detection; Photonic integrated circuits; Probes;

fLanguage

English

Publisher

ieee

Conference_Titel

Sensors, 2003. Proceedings of IEEE

Print_ISBN

0-7803-8133-5

Type

conf

DOI

10.1109/ICSENS.2003.1279148

Filename

1279148