Optical Polarimeter for the Measurement of Glucose Concentration using a new Liquid Crystal Polarization Modulator
碩士 === 國立成功大學 === 機械工程學系碩博士班 === 92 === Optical activity which is a character of some substances can be applied to many domains, such as the measurement of glucose concentration. In this report, we firstly developed a new liquid-crystal (LC) polarization modulator consisting of one LC variable ret...
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| Format: | Others |
| Language: | en_US |
| Published: |
2004
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| Online Access: | http://ndltd.ncl.edu.tw/handle/90865324482081412918 |
| Summary: | 碩士 === 國立成功大學 === 機械工程學系碩博士班 === 92 === Optical activity which is a character of some substances can be applied to many domains, such as the measurement of glucose concentration. In this report, we firstly developed a new liquid-crystal (LC) polarization modulator consisting of one LC variable retarder and two quarter wave plates. This modulator could be used to replace the Faraday modulator in modulating the polarization angle of light. We passed a linearly polarizing light through the LC modulator and an analyzer to obtain a modulated signal. After demodulating the signal by using the new demodulation system, the rotation angle caused by optical activity would be derived. This polarimeter has simpler structure, less optical elements, and a cheaper modulator than traditional one. To be integrated and non-invasive glucose sensor will be the purpose of this system.
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