Browsing by Author "Lin, Hsin-An"

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Chip-size wavelength detector based on a gradient grating period guided-mode resonance filter
(2016-01-01)
Lin, Hsin-An
;
Hsu, Hsin-Yun
;
Huang, Cheng-Sheng
;
機械工程學系
;
Department of Mechanical Engineering
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.
Compact spectrometer system based on a gradient grating period guided-mode resonance filter
(2016-05-16)
Lin, Hsin-An
;
Hsu, Hsin-Yun
;
Chang, Chih-Wei
;
Huang, Cheng-Sheng
;
機械工程學系
We demonstrate a compact spectrometer system by using a gradient grating period guided-mode resonance filter-mounted on a linear photodetector array-that exhibits spatially dependent resonance characteristics; a specific incident wavelength is reflected such that the underlying array pixels measure minimum intensity. A precalibrated transmission efficiency matrix is used to determine each pixel's transmission efficiency for specific wavelengths. Unknown spectral information can be calculated from the measured intensity. Grating periods of 250-388 nm in 2-nm increments are used in each 100-cycle period. Device length is 2.23 mm. Spectral range of 506-700 nm is measurable with 1-nm resolution. (C) 2016 Optical Society of America
Compact Wavelength Detection System Based on a Gradient Grating Period Guided-Mode Resonance Filter
(2016)
Lin, Hsin-An
;
Hsu, Hsin-Yun
;
Huang, Cheng-Sheng
;
機械工程學系
;
Department of Mechanical Engineering
We designed a linear filter based on a gradient grating period guided-mode resonance. By incorporating this device with a photodetector, the system can measure wavelength ranging from 500 to 700 nm with 1 nm resolution.
Design and Fabrication of Compact Spectrometer based on Gradient Grating Period Guided-Mode Resonance Filter
(2017-01-01)
Lin, Hsin-An
;
Hsu, Hsin-Yun
;
Chang, Chih-Wei
;
Huang, Cheng-Sheng
;
機械工程學系
We designed and fabricated a compact spectrometer based on a gradient grating period guided-mode resonance filter (GGP-GMRF). The GGP-GMRF of 2.23 mm long consisted of gratings with periods varying from 250-388 nm in 2-nm increments. With such compact size, the device can measure spectrum ranging from 506 to 700 nm.
Linear Variable Filter Based on a Gradient Grating Period Guided-Mode Resonance Filter
(2016-05-01)
Lin, Hsin-An
;
Huang, Cheng-Sheng
;
機械工程學系
;
Department of Mechanical Engineering
In this letter, we fabricated and characterized a linear variable filter based on a guided-mode resonance filter (GMRF) with gradient grating periods. The GMRF was first fabricated through nanoreplica molding on a plastic substrate, which was followed by the deposition of a thin TiO2 film. The grating periods of the 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 GMRF has a filtering range of 506-915 nm.