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
Series Conference on Optoelectronic and Microelectronic Materials and Devices, Proceedings, COMMAD
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 DOI
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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