Humidity sensor based on a multimode-fiber taper coated with polyvinyl alcohol interacting with a fiber bragg grating
An optical fiber relative humidity (RH) sensor is proposed and experimentally demonstrated with a multimode-fiber taper coated with a layer of polyvinyl alcohol cascading with a fiber Bragg grating. The operation is based on the interaction between the optical evanescent field and the coating along...
| Main Authors: | , , , , |
|---|---|
| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2013
|
| Online Access: | https://hdl.handle.net/10356/96036 http://hdl.handle.net/10220/11256 |
| _version_ | 1826113584955916288 |
|---|---|
| author | Li, Tao Dong, Xinyong Chan, Chi Chiu Zhao, Chun-Liu Zu, Peng |
| author2 | School of Chemical and Biomedical Engineering |
| author_facet | School of Chemical and Biomedical Engineering Li, Tao Dong, Xinyong Chan, Chi Chiu Zhao, Chun-Liu Zu, Peng |
| author_sort | Li, Tao |
| collection | NTU |
| description | An optical fiber relative humidity (RH) sensor is proposed and experimentally demonstrated with a multimode-fiber taper coated with a layer of polyvinyl alcohol cascading with a fiber Bragg grating. The operation is based on the interaction between the optical evanescent field and the coating along the taper waist. Humidity changes the refractive index of the extended coating, thus transmission loss of the light signal is introduced and humidity measurement is therefore realized. The measurement sensitivity is enhanced since the light passes through the taper twice. A maximum sensitivity of 1.994 μW/%RH is achieved within the measurement range of 30-95%RH with the taper waist diameter of 50.2 μm. The average response time is ~2 s and the measurement is nearly insensitive to temperature. |
| first_indexed | 2024-10-01T03:25:37Z |
| format | Journal Article |
| id | ntu-10356/96036 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T03:25:37Z |
| publishDate | 2013 |
| record_format | dspace |
| spelling | ntu-10356/960362020-03-07T11:35:23Z Humidity sensor based on a multimode-fiber taper coated with polyvinyl alcohol interacting with a fiber bragg grating Li, Tao Dong, Xinyong Chan, Chi Chiu Zhao, Chun-Liu Zu, Peng School of Chemical and Biomedical Engineering An optical fiber relative humidity (RH) sensor is proposed and experimentally demonstrated with a multimode-fiber taper coated with a layer of polyvinyl alcohol cascading with a fiber Bragg grating. The operation is based on the interaction between the optical evanescent field and the coating along the taper waist. Humidity changes the refractive index of the extended coating, thus transmission loss of the light signal is introduced and humidity measurement is therefore realized. The measurement sensitivity is enhanced since the light passes through the taper twice. A maximum sensitivity of 1.994 μW/%RH is achieved within the measurement range of 30-95%RH with the taper waist diameter of 50.2 μm. The average response time is ~2 s and the measurement is nearly insensitive to temperature. 2013-07-12T01:57:28Z 2019-12-06T19:24:45Z 2013-07-12T01:57:28Z 2019-12-06T19:24:45Z 2011 2011 Journal Article Li, T., Dong, X., Chan, C. C., Zhao, C.-L., Zu, P. (2011). Humidity sensor based on a multimode-fiber taper coated with polyvinyl alcohol interacting with a fiber bragg grating. IEEE Sensors Journal, 12(6), 2205-2208. https://hdl.handle.net/10356/96036 http://hdl.handle.net/10220/11256 10.1109/JSEN.2011.2181358 en IEEE sensors journal © 2011 IEEE. |
| spellingShingle | Li, Tao Dong, Xinyong Chan, Chi Chiu Zhao, Chun-Liu Zu, Peng Humidity sensor based on a multimode-fiber taper coated with polyvinyl alcohol interacting with a fiber bragg grating |
| title | Humidity sensor based on a multimode-fiber taper coated with polyvinyl alcohol interacting with a fiber bragg grating |
| title_full | Humidity sensor based on a multimode-fiber taper coated with polyvinyl alcohol interacting with a fiber bragg grating |
| title_fullStr | Humidity sensor based on a multimode-fiber taper coated with polyvinyl alcohol interacting with a fiber bragg grating |
| title_full_unstemmed | Humidity sensor based on a multimode-fiber taper coated with polyvinyl alcohol interacting with a fiber bragg grating |
| title_short | Humidity sensor based on a multimode-fiber taper coated with polyvinyl alcohol interacting with a fiber bragg grating |
| title_sort | humidity sensor based on a multimode fiber taper coated with polyvinyl alcohol interacting with a fiber bragg grating |
| url | https://hdl.handle.net/10356/96036 http://hdl.handle.net/10220/11256 |
| work_keys_str_mv | AT litao humiditysensorbasedonamultimodefibertapercoatedwithpolyvinylalcoholinteractingwithafiberbragggrating AT dongxinyong humiditysensorbasedonamultimodefibertapercoatedwithpolyvinylalcoholinteractingwithafiberbragggrating AT chanchichiu humiditysensorbasedonamultimodefibertapercoatedwithpolyvinylalcoholinteractingwithafiberbragggrating AT zhaochunliu humiditysensorbasedonamultimodefibertapercoatedwithpolyvinylalcoholinteractingwithafiberbragggrating AT zupeng humiditysensorbasedonamultimodefibertapercoatedwithpolyvinylalcoholinteractingwithafiberbragggrating |