Symmetrical Metal Cladding Waveguide for Absorption Sensing and its Sensitivity Analysis
A sensitivity analysis of absorption sensing based on the symmetrical metal-cladding waveguide is presented. The calculated reflectivity curve shows that any minute variation of the extinction coefficient due to absorption of the sample will easily give rise to a dramatic change in the minimum refle...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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IEEE
2017-01-01
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| Series: | IEEE Photonics Journal |
| Subjects: | |
| Online Access: | https://ieeexplore.ieee.org/document/7784724/ |
| _version_ | 1819163334602129408 |
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| author | Huaqing Zhou Qidi Sang Xianping Wang Xianfeng Chen |
| author_facet | Huaqing Zhou Qidi Sang Xianping Wang Xianfeng Chen |
| author_sort | Huaqing Zhou |
| collection | DOAJ |
| description | A sensitivity analysis of absorption sensing based on the symmetrical metal-cladding waveguide is presented. The calculated reflectivity curve shows that any minute variation of the extinction coefficient due to absorption of the sample will easily give rise to a dramatic change in the minimum reflectivity. It is found that thickness of the metal coupling film is a critical factor. With a thin metal coupling film, the minimum reflectivity decreases at first, reaches zero, and then increases gradually when extinction coefficient of the sample increases. However, in another case, the minimum reflectivity always increases as an increasing extinction coefficient of the sample. These characteristics are explained in terms of comparison between the intrinsic and radiative dampings, which are derived in an analytic form by using the first-order perturbation theory. A proof-of-concept experiment, that is, absorption sensing the methylene blue concentration, is also given. |
| first_indexed | 2024-12-22T17:42:29Z |
| format | Article |
| id | doaj.art-7e0c3ff276784538915280b8bda32a7d |
| institution | Directory Open Access Journal |
| issn | 1943-0655 |
| language | English |
| last_indexed | 2024-12-22T17:42:29Z |
| publishDate | 2017-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Photonics Journal |
| spelling | doaj.art-7e0c3ff276784538915280b8bda32a7d2022-12-21T18:18:23ZengIEEEIEEE Photonics Journal1943-06552017-01-01911910.1109/JPHOT.2016.26406607784724Symmetrical Metal Cladding Waveguide for Absorption Sensing and its Sensitivity AnalysisHuaqing Zhou0Qidi Sang1Xianping Wang2Xianfeng Chen3Jiangxi Key Laboratory of Photoelectronics and Telecommunication, Department of Physics, Jiangxi Normal University, Nanchang, ChinaSchool of Electronic Information and Electrical Engineering, Shanghai Jiaotong University, Shanghai, ChinaJiangxi Key Laboratory of Photoelectronics and Telecommunication, Department of Physics, Jiangxi Normal University, Nanchang, ChinaDepartment of Physics and Astronomy, Shanghai Jiaotong University, Shanghai, ChinaA sensitivity analysis of absorption sensing based on the symmetrical metal-cladding waveguide is presented. The calculated reflectivity curve shows that any minute variation of the extinction coefficient due to absorption of the sample will easily give rise to a dramatic change in the minimum reflectivity. It is found that thickness of the metal coupling film is a critical factor. With a thin metal coupling film, the minimum reflectivity decreases at first, reaches zero, and then increases gradually when extinction coefficient of the sample increases. However, in another case, the minimum reflectivity always increases as an increasing extinction coefficient of the sample. These characteristics are explained in terms of comparison between the intrinsic and radiative dampings, which are derived in an analytic form by using the first-order perturbation theory. A proof-of-concept experiment, that is, absorption sensing the methylene blue concentration, is also given.https://ieeexplore.ieee.org/document/7784724/Sensorswaveguide devices |
| spellingShingle | Huaqing Zhou Qidi Sang Xianping Wang Xianfeng Chen Symmetrical Metal Cladding Waveguide for Absorption Sensing and its Sensitivity Analysis IEEE Photonics Journal Sensors waveguide devices |
| title | Symmetrical Metal Cladding Waveguide for Absorption Sensing and its Sensitivity Analysis |
| title_full | Symmetrical Metal Cladding Waveguide for Absorption Sensing and its Sensitivity Analysis |
| title_fullStr | Symmetrical Metal Cladding Waveguide for Absorption Sensing and its Sensitivity Analysis |
| title_full_unstemmed | Symmetrical Metal Cladding Waveguide for Absorption Sensing and its Sensitivity Analysis |
| title_short | Symmetrical Metal Cladding Waveguide for Absorption Sensing and its Sensitivity Analysis |
| title_sort | symmetrical metal cladding waveguide for absorption sensing and its sensitivity analysis |
| topic | Sensors waveguide devices |
| url | https://ieeexplore.ieee.org/document/7784724/ |
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