Parallel self-mixing flow sensor using monolithic VCSEL array

Lim, Yah Leng, Kliese, Russell, Bertling, Karl and Rakić, A. D. (2008). Parallel self-mixing flow sensor using monolithic VCSEL array. In: L. Faraone and M. Cortie, Proceedings of the 2008 Conference on Optoelectronic and Microelectronic Materials and Devices. 2008 Conference on Optoelectronic and Microelectronic Materials and Devices (COMMAD 2008), Sydney, Australia, (67-70). 28 July - 1 August, 2008. doi:10.1109/COMMAD.2008.4802093


Author Lim, Yah Leng
Kliese, Russell
Bertling, Karl
Rakić, A. D.
Title of paper Parallel self-mixing flow sensor using monolithic VCSEL array
Conference name 2008 Conference on Optoelectronic and Microelectronic Materials and Devices (COMMAD 2008)
Conference location Sydney, Australia
Conference dates 28 July - 1 August, 2008
Convener Faraone, L.
Proceedings title Proceedings of the 2008 Conference on Optoelectronic and Microelectronic Materials and Devices
Journal name Commad: 2008 Conference On Optoelectronic and Microelectronic Materials
Place of Publication Piscataway, U.S.
Publisher IEEE
Publication Year 2008
Year available 2008
Sub-type Fully published paper
DOI 10.1109/COMMAD.2008.4802093
Open Access Status
ISBN 978-1-4244-2717-8
Editor L. Faraone
M. Cortie
Start page 67
End page 70
Total pages 4
Language eng
Abstract/Summary This paper describes the first multi-channel velocity sensor based on a self mixing effect in a monolithic VCSEL array. The self-mixing signals are obtained directly via the feedback caused variation in laser junction voltage, omitting the need for a photodetector. This solution, enabling concurrent acquisition of a plurality of signals, offers significant technological advantage over single channel implementation as it removes the need to scan the target in a raster fashion. In comparison with the spot-raster imaging sensors, the acquisition time is significantly shortened - the mechanical scanning process in is replaced by concurrent acquisition of several channels enabling flow velocity to be sensed on a 2D grid by performing a single sweep of the area. The system was used to measure the velocity profile of fluid flow resembling that of blood circulation in peripheral blood vessels.
Formatted Abstract/Summary
This paper describes the first multi-channel velocity sensor based on a self mixing effect in a monolithic VCSEL array. The self-mixing signals are obtained directly via the feedback caused variation in laser junction voltage, omitting the need for a photodetector. This solution, enabling concurrent acquisition of a plurality of signals, offers significant technological advantage over single channel implementation as it removes the need to scan the target in a raster fashion. In comparison with the spot-raster imaging sensors, the acquisition time is significantly shortened - the mechanical scanning process in is replaced by concurrent acquisition of several channels enabling flow velocity to be sensed on a 2D grid by performing a single sweep of the area. The system was used to measure the velocity profile of fluid flow resembling that of blood circulation in peripheral blood vessels.
© 2008 IEEE
Subjects E1
090605 Photodetectors, Optical Sensors and Solar Cells
090606 Photonics and Electro-Optical Engineering (excl. Communications)
970109 Expanding Knowledge in Engineering
0906 Electrical and Electronic Engineering
Keyword Image sensors
Photodetectors
Surface emitting lasers
Q-Index Code E1
Q-Index Status Confirmed Code
Institutional Status UQ

 
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