Design, fabrication and measurements with a UV linear-variable optical filter microspectrometer

Arvin Emadi; Huaiwen Wu; Ger de Graaf; Peter Enoksson; José Higino Correia; Reinoud Wolffenbuttel

doi:10.1117/12.922374

9 May 2012 Design, fabrication and measurements with a UV linear-variable optical filter microspectrometer

Arvin Emadi, Huaiwen Wu, Ger de Graaf, Peter Enoksson, José Higino Correia, Reinoud Wolffenbuttel

Proceedings Volume 8439, Optical Sensing and Detection II; 84390V (2012) https://doi.org/10.1117/12.922374
Event: SPIE Photonics Europe, 2012, Brussels, Belgium

Abstract

An IC-Compatible Linear-Variable Optical Filter (LVOF) for application in the UV spectral range between 310 nm and 400 nm has been fabricated using resist reflow and an optimized dry-etching. The LVOF is mounted on the top of a commercially available CMOS camera to result in a UV microspectrometer. A special calibration technique has been employed that is based on an initial spectral measurement on a Xenon lamp. The image recorded on the camera during calibration is used in a signal processing algorithm to reconstruct the spectrum of the Mercury lamp and the calibration data is subsequently used in UV spectral measurements. Experiments on fabricated LVOF-based microspectrometer with this calibration approach implemented reveal a spectral resolution of 0.5 nm.

Citation Download Citation

Arvin Emadi, Huaiwen Wu, Ger de Graaf, Peter Enoksson, José Higino Correia, and Reinoud Wolffenbuttel "Design, fabrication and measurements with a UV linear-variable optical filter microspectrometer", Proc. SPIE 8439, Optical Sensing and Detection II, 84390V (9 May 2012); https://doi.org/10.1117/12.922374

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