Chitosan-coated polarization maintaining fiber-based Sagnac interferometer for relative humidity measurement
A relative humidity fiber sensor based on polarization maintaining (PM) fiber Sagnac interferometery configuration is presented. The proposed sensor is functionalized with a thin layer of a moisture-sensitive natural polymer chitosan, whose degree of swelling varies as a function of relative humidit...
| Main Authors: | , , , , , , , , , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2013
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| Online Access: | https://hdl.handle.net/10356/98568 http://hdl.handle.net/10220/13429 |
| _version_ | 1811685328369483776 |
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| author | Neu, Björn Balamurali, Papusamy Menon, Rahul Zu, Peng Chen, Li Han Chan, Chi Chiu Li, Tao Shaillender, Mutukumaraswamy Ang, Xiu Min Wong, Wei Chang Poh, Chueh Loo Leong, Kam Chew |
| author2 | School of Chemical and Biomedical Engineering |
| author_facet | School of Chemical and Biomedical Engineering Neu, Björn Balamurali, Papusamy Menon, Rahul Zu, Peng Chen, Li Han Chan, Chi Chiu Li, Tao Shaillender, Mutukumaraswamy Ang, Xiu Min Wong, Wei Chang Poh, Chueh Loo Leong, Kam Chew |
| author_sort | Neu, Björn |
| collection | NTU |
| description | A relative humidity fiber sensor based on polarization maintaining (PM) fiber Sagnac interferometery configuration is presented. The proposed sensor is functionalized with a thin layer of a moisture-sensitive natural polymer chitosan, whose degree of swelling varies as a function of relative humidity. The sensing scheme used in this study is based on the strain effect induced on the PM fiber to modulate its birefringence property through the swelling effect of chitosan. To optimize the sensor's response, the experiments were first conducted to evaluate the effect of chitosan concentration on the PM fiber, followed by investigating effects of chemically etched PM fiber and analyzing modified chitosan sensing film effect on the sensor's performance. As observed from the results, the optimized sensor exhibits a sensitivity of 81 pm/%RH for the relative humidity ranging from 20% RH to 95% RH with an uncertainty of ±2.04% RH. |
| first_indexed | 2024-10-01T04:42:47Z |
| format | Journal Article |
| id | ntu-10356/98568 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T04:42:47Z |
| publishDate | 2013 |
| record_format | dspace |
| spelling | ntu-10356/985682020-03-07T11:35:20Z Chitosan-coated polarization maintaining fiber-based Sagnac interferometer for relative humidity measurement Neu, Björn Balamurali, Papusamy Menon, Rahul Zu, Peng Chen, Li Han Chan, Chi Chiu Li, Tao Shaillender, Mutukumaraswamy Ang, Xiu Min Wong, Wei Chang Poh, Chueh Loo Leong, Kam Chew School of Chemical and Biomedical Engineering A relative humidity fiber sensor based on polarization maintaining (PM) fiber Sagnac interferometery configuration is presented. The proposed sensor is functionalized with a thin layer of a moisture-sensitive natural polymer chitosan, whose degree of swelling varies as a function of relative humidity. The sensing scheme used in this study is based on the strain effect induced on the PM fiber to modulate its birefringence property through the swelling effect of chitosan. To optimize the sensor's response, the experiments were first conducted to evaluate the effect of chitosan concentration on the PM fiber, followed by investigating effects of chemically etched PM fiber and analyzing modified chitosan sensing film effect on the sensor's performance. As observed from the results, the optimized sensor exhibits a sensitivity of 81 pm/%RH for the relative humidity ranging from 20% RH to 95% RH with an uncertainty of ±2.04% RH. 2013-09-09T08:11:16Z 2019-12-06T19:56:57Z 2013-09-09T08:11:16Z 2019-12-06T19:56:57Z 2012 2012 Journal Article 1077-260X https://hdl.handle.net/10356/98568 http://hdl.handle.net/10220/13429 10.1109/JSTQE.2012.2194729 en IEEE journal of selected topics in quantum electronics © 2012 IEEE |
| spellingShingle | Neu, Björn Balamurali, Papusamy Menon, Rahul Zu, Peng Chen, Li Han Chan, Chi Chiu Li, Tao Shaillender, Mutukumaraswamy Ang, Xiu Min Wong, Wei Chang Poh, Chueh Loo Leong, Kam Chew Chitosan-coated polarization maintaining fiber-based Sagnac interferometer for relative humidity measurement |
| title | Chitosan-coated polarization maintaining fiber-based Sagnac interferometer for relative humidity measurement |
| title_full | Chitosan-coated polarization maintaining fiber-based Sagnac interferometer for relative humidity measurement |
| title_fullStr | Chitosan-coated polarization maintaining fiber-based Sagnac interferometer for relative humidity measurement |
| title_full_unstemmed | Chitosan-coated polarization maintaining fiber-based Sagnac interferometer for relative humidity measurement |
| title_short | Chitosan-coated polarization maintaining fiber-based Sagnac interferometer for relative humidity measurement |
| title_sort | chitosan coated polarization maintaining fiber based sagnac interferometer for relative humidity measurement |
| url | https://hdl.handle.net/10356/98568 http://hdl.handle.net/10220/13429 |
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