Highly sensitive refractive index sensor based on two cascaded microfiber knots with vernier effect
A highly sensitive refractive index (RI) sensor based on two cascaded microfiber knots with vernier effect is proposed and demonstrated by theoretical arithmetic. Deriving from high proportional evanescent field of microfiber and sharp spectrum fringes induced by vernier effect, a slight change of a...
| Main Authors: | , , , , |
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| Other Authors: | |
| Format: | Conference Paper |
| Language: | English |
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2014
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| Online Access: | https://hdl.handle.net/10356/104853 http://hdl.handle.net/10220/20343 http://proceedings.spiedigitallibrary.org/proceeding.aspx?articleid=1877956 |
| _version_ | 1811689370407665664 |
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| author | Sun, Qizhen Jia, Weihua Shum, Perry Ping Liu, Deming Xu, Zhilin |
| author2 | School of Electrical and Electronic Engineering |
| author_facet | School of Electrical and Electronic Engineering Sun, Qizhen Jia, Weihua Shum, Perry Ping Liu, Deming Xu, Zhilin |
| author_sort | Sun, Qizhen |
| collection | NTU |
| description | A highly sensitive refractive index (RI) sensor based on two cascaded microfiber knots with vernier effect is proposed and demonstrated by theoretical arithmetic. Deriving from high proportional evanescent field of microfiber and sharp spectrum fringes induced by vernier effect, a slight change of ambient RI will cause large variation of effective RI and significant wavelength shift of resonant peaks, indicating high sensitivity and resolution of the proposed compound resonator. Numerical analysis demonstrates a high sensitivity of 10000nm/RIU and a resolution of 5.57×10−5 RIU at the ambient RI around 1.33 for the fiber diameter of 1μm and cavity radii of R1 = 500μm, R2 = 547.62μm. |
| first_indexed | 2024-10-01T05:47:01Z |
| format | Conference Paper |
| id | ntu-10356/104853 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T05:47:01Z |
| publishDate | 2014 |
| record_format | dspace |
| spelling | ntu-10356/1048532019-12-06T21:41:15Z Highly sensitive refractive index sensor based on two cascaded microfiber knots with vernier effect Sun, Qizhen Jia, Weihua Shum, Perry Ping Liu, Deming Xu, Zhilin School of Electrical and Electronic Engineering 23rd International Conference on Optical Fibre Sensors DRNTU::Engineering::Electrical and electronic engineering A highly sensitive refractive index (RI) sensor based on two cascaded microfiber knots with vernier effect is proposed and demonstrated by theoretical arithmetic. Deriving from high proportional evanescent field of microfiber and sharp spectrum fringes induced by vernier effect, a slight change of ambient RI will cause large variation of effective RI and significant wavelength shift of resonant peaks, indicating high sensitivity and resolution of the proposed compound resonator. Numerical analysis demonstrates a high sensitivity of 10000nm/RIU and a resolution of 5.57×10−5 RIU at the ambient RI around 1.33 for the fiber diameter of 1μm and cavity radii of R1 = 500μm, R2 = 547.62μm. Published version 2014-08-19T07:54:26Z 2019-12-06T21:41:15Z 2014-08-19T07:54:26Z 2019-12-06T21:41:15Z 2014 2014 Conference Paper Xu, Z., Sun, Q., Jia, W., Shum, P. P., & Liu, D. (2014). Highly sensitive refractive index sensor based on two cascaded microfiber knots with Vernier effect. Proceedings SPIE 9157, 23rd International Conference on Optical Fibre Sensors. https://hdl.handle.net/10356/104853 http://hdl.handle.net/10220/20343 http://proceedings.spiedigitallibrary.org/proceeding.aspx?articleid=1877956 en © 2014 Society of Photo-Optical Instrumentation Engineers (SPIE). This paper was published in Proceedings SPIE 9157, 23rd International Conference on Optical Fibre Sensors and is made available as an electronic reprint (preprint) with permission of Society of Photo-Optical Instrumentation Engineers (SPIE). The paper can be found at the following official URL: [http://proceedings.spiedigitallibrary.org/proceeding.aspx?articleid=1877956]. One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper is prohibited and is subject to penalties under law. application/pdf |
| spellingShingle | DRNTU::Engineering::Electrical and electronic engineering Sun, Qizhen Jia, Weihua Shum, Perry Ping Liu, Deming Xu, Zhilin Highly sensitive refractive index sensor based on two cascaded microfiber knots with vernier effect |
| title | Highly sensitive refractive index sensor based on two cascaded microfiber knots with vernier effect |
| title_full | Highly sensitive refractive index sensor based on two cascaded microfiber knots with vernier effect |
| title_fullStr | Highly sensitive refractive index sensor based on two cascaded microfiber knots with vernier effect |
| title_full_unstemmed | Highly sensitive refractive index sensor based on two cascaded microfiber knots with vernier effect |
| title_short | Highly sensitive refractive index sensor based on two cascaded microfiber knots with vernier effect |
| title_sort | highly sensitive refractive index sensor based on two cascaded microfiber knots with vernier effect |
| topic | DRNTU::Engineering::Electrical and electronic engineering |
| url | https://hdl.handle.net/10356/104853 http://hdl.handle.net/10220/20343 http://proceedings.spiedigitallibrary.org/proceeding.aspx?articleid=1877956 |
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