標題: Chip-size wavelength detector based on a gradient grating period guided-mode resonance filter
作者: Lin, Hsin-An
Hsu, Hsin-Yun
Huang, Cheng-Sheng
機械工程學系
Department of Mechanical Engineering
關鍵字: linear filter;guided-mode resonance;subwavelength nanostructure
公開日期: 1-Jan-2016
摘要: In this study, we designed, fabricated and demonstrated a compact wavelength detection system based on a gradient grating period guided-mode resonance filter (GGP-GMRF) mounted on a linear charge-coupled device (CCD) camera. The GGP-GMRF was first fabricated through nanoreplica molding on a plastic substrate, followed by the deposition of a thin TiO2 film. The grating periods of the GGP-GMRF vary from 250 to 550 nm with a 2 nm increment in each period consisting of 100 cycles. The results show that a 6 mm long GGP-GMRF has a filtering range of 506 to 915 nm. Upon illumination, the GGP-GMRF reflects a particular wavelength of light resulting in the minimum transmission of that wavelength. Hence, the GGP-GMRF provides a spatially dependent minimum transmission depending on the wavelength of the incident light. The linear CCD underneath the GGP-GMRF measures the transmitted intensity, and the wavelength of the incident light can be correlated with the location of the minimum intensity. For the demonstrated GGP-GMRF and CCD system, a spectral resolution of 1 nm can be achieved.
URI: http://dx.doi.org/10.1117/12.2235403
http://hdl.handle.net/11536/136394
ISBN: 978-1-5106-0287-8; 978-1-5106-0288-5
ISSN: 0277-786X
DOI: 10.1117/12.2235403
期刊: NOVEL OPTICAL SYSTEMS DESIGN AND OPTIMIZATION XIX
Volume: 9948
起始頁: 0
結束頁: 0
Appears in Collections:Conferences Paper


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