Mathematical simulation for integrated linear fresnel spectrometer chip
- Authors
- Park, Yeonjoon; Yoon, Hargsoon; Lee, Uhn; King, Glen C.; Choi, Sang
- Issue Date
- Mar-2012
- Publisher
- Proceedings of SPIE
- Keywords
- Fresnel diffraction; Linear gradient grating; Micro spectrometer chip design
- Citation
- Proceedings of SPIE - The International Society for Optical Engineering, v.8344
- Journal Title
- Proceedings of SPIE - The International Society for Optical Engineering
- Volume
- 8344
- URI
- https://scholarworks.bwise.kr/gachon/handle/2020.sw.gachon/79028
- DOI
- 10.1117/12.917505
- ISSN
- 0277-786X
- Abstract
- A miniaturized solid-state optical spectrometer chip was designed with a linear gradient-gap Fresnel grating which was mounted perpendicularly to a sensor array surface and simulated for its performance and functionality. Unlike common spectrometers which are based on Fraunhoffer diffraction with a regular periodic line grating, the new linear gradient grating Fresnel spectrometer chip can be miniaturized to a much smaller form-factor into the Fresnel regime exceeding the limit of conventional spectrometers. This mathematical calculation shows that building a tiny motionless multi-pixel micro-spectrometer chip which is smaller than 1mm 3 of optical path volume is possible. The new Fresnel spectrometer chip is proportional to the energy scale (hc/λ), while the conventional spectrometers are proportional to the wavelength scale (λ). We report the theoretical optical working principle and new data collection algorithm of the new Fresnel spectrometer to build a compact integrated optical chip. © 2012 SPIE.
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