Biodiesel sensing using silicon-on-insulator technologies

Alvaro Casas Bedoya; Meng Y. Ling; Joost Brouckaert; Nebiyu A. Yebo; Dries Van Thourhout; Roel G. Baets

doi:10.1117/12.821508

20 May 2009 Biodiesel sensing using silicon-on-insulator technologies

Alvaro Casas Bedoya, Meng Y. Ling, Joost Brouckaert, Nebiyu A. Yebo, Dries Van Thourhout, Roel G. Baets

Proceedings Volume 7366, Photonic Materials, Devices, and Applications III; 73660D (2009) https://doi.org/10.1117/12.821508
Event: SPIE Europe Microtechnologies for the New Millennium, 2009, Dresden, Germany

Abstract

By measuring the transmission of Biodiesel/Diesel mixtures in the near- and far-infrared wavelength ranges, it is possible to predict the blend level with a high accuracy. Conventional photospectrometers are typically large and expensive and have a performance that often exceeds the requirements for most applications. For automotive applications for example, what counts is size, robustness and most important cost. As a result the miniaturization of the spectrometer can be seen as an attractive implementation of a Biodiesel sensor. Using Silicon-on-Insulator (SOI) this spectrometer miniaturization can be achieved. Due to the large refractive index contrast of the SOI material system, photonic devices can be made very compact. Moreover, they can be manufactured on high-quality SOI substrates using waferscale CMOS fabrication tools, making them cheap for the market. In this paper, we show that it is possible to determine Biodiesel blend levels using an SOI spectrometer-on-a-chip. We demonstrate absorption measurements using spiral shaped waveguides and we also present the spectrometer design for on-chip Biodiesel blend level measurements.

Citation Download Citation

Alvaro Casas Bedoya, Meng Y. Ling, Joost Brouckaert, Nebiyu A. Yebo, Dries Van Thourhout, and Roel G. Baets "Biodiesel sensing using silicon-on-insulator technologies", Proc. SPIE 7366, Photonic Materials, Devices, and Applications III, 73660D (20 May 2009); https://doi.org/10.1117/12.821508

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