Micro-structured optical fiber for sensing applications
Optical fibers are expansively applicable to multiple industries such as engineering, medical, and most commonly in telecommunications. In more recent times, optical fibers have also played a significant role for their sensing applications which have proved to perform better than conventional sensor...
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| Format: | Final Year Project (FYP) |
| Language: | English |
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Nanyang Technological University
2020
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| Online Access: | https://hdl.handle.net/10356/139163 |
| _version_ | 1826114979083845632 |
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| author | Lee, Nicholas Wayne |
| author2 | - |
| author_facet | - Lee, Nicholas Wayne |
| author_sort | Lee, Nicholas Wayne |
| collection | NTU |
| description | Optical fibers are expansively applicable to multiple industries such as engineering, medical, and most commonly in telecommunications. In more recent times, optical fibers have also played a significant role for their sensing applications which have proved to perform better than conventional sensors under various circumstances. There has been a growing interest in the development of fiber sensors using photonic crystal fibers (PCF), due to the flexibility and array of their designs which enables constant innovative methods of sensor development. In this project, experiments have been conducted with 7-hole PCF to test the feasibility of its development as a temperature sensor. The method involved selectively infiltrating ethanol of two different concentrations, with refractive indexes of 1.3495 and 1.608, into two of the air claddings in opposition of each other. The layer of ethanol in the air cladding and the outer layer silica cladding forms a double-layered Fabry-Pérot resonator. As a result of the thermo- optic effect of ethanol, the measured temperature sensitivity of the ethanol with lower concentration is -0.1893nm/°𝐶, while the temperature sensitivity of the ethanol with higher concentration is -0.2214nm/°𝐶. With the results achieved, the 7-hole PCF is viable for use in future developments of a temperature sensor. |
| first_indexed | 2024-10-01T03:47:42Z |
| format | Final Year Project (FYP) |
| id | ntu-10356/139163 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T03:47:42Z |
| publishDate | 2020 |
| publisher | Nanyang Technological University |
| record_format | dspace |
| spelling | ntu-10356/1391632023-07-07T18:52:26Z Micro-structured optical fiber for sensing applications Lee, Nicholas Wayne - School of Electrical and Electronic Engineering Thales at NTU Joint Research Laboratory Chen Yu-Cheng yucchen@ntu.edu.sg Engineering::Electrical and electronic engineering Optical fibers are expansively applicable to multiple industries such as engineering, medical, and most commonly in telecommunications. In more recent times, optical fibers have also played a significant role for their sensing applications which have proved to perform better than conventional sensors under various circumstances. There has been a growing interest in the development of fiber sensors using photonic crystal fibers (PCF), due to the flexibility and array of their designs which enables constant innovative methods of sensor development. In this project, experiments have been conducted with 7-hole PCF to test the feasibility of its development as a temperature sensor. The method involved selectively infiltrating ethanol of two different concentrations, with refractive indexes of 1.3495 and 1.608, into two of the air claddings in opposition of each other. The layer of ethanol in the air cladding and the outer layer silica cladding forms a double-layered Fabry-Pérot resonator. As a result of the thermo- optic effect of ethanol, the measured temperature sensitivity of the ethanol with lower concentration is -0.1893nm/°𝐶, while the temperature sensitivity of the ethanol with higher concentration is -0.2214nm/°𝐶. With the results achieved, the 7-hole PCF is viable for use in future developments of a temperature sensor. Bachelor of Engineering (Electrical and Electronic Engineering) 2020-05-16T13:18:22Z 2020-05-16T13:18:22Z 2020 Final Year Project (FYP) https://hdl.handle.net/10356/139163 en A3217-191 application/pdf Nanyang Technological University |
| spellingShingle | Engineering::Electrical and electronic engineering Lee, Nicholas Wayne Micro-structured optical fiber for sensing applications |
| title | Micro-structured optical fiber for sensing applications |
| title_full | Micro-structured optical fiber for sensing applications |
| title_fullStr | Micro-structured optical fiber for sensing applications |
| title_full_unstemmed | Micro-structured optical fiber for sensing applications |
| title_short | Micro-structured optical fiber for sensing applications |
| title_sort | micro structured optical fiber for sensing applications |
| topic | Engineering::Electrical and electronic engineering |
| url | https://hdl.handle.net/10356/139163 |
| work_keys_str_mv | AT leenicholaswayne microstructuredopticalfiberforsensingapplications |