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: | 1-一月-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 |
顯示於類別: | 會議論文 |