Simulations of ultrasensitive whispering gallery mode optical microdisk resonators
Healthcare is one of the most worried concerns in the 21st century, infectious illnesses, cancer and pathogen threaten lives incessantly. Especially the various kind of cancers, this second leading cause of death worldwide has taken 10 million lives away from the society every year. Thus, a rapid...
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| Other Authors: | |
| Format: | Thesis-Master by Coursework |
| Language: | English |
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Nanyang Technological University
2022
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| Online Access: | https://hdl.handle.net/10356/161103 |
| _version_ | 1826110659052437504 |
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| author | Feng, Wanqi |
| author2 | Luo Yu |
| author_facet | Luo Yu Feng, Wanqi |
| author_sort | Feng, Wanqi |
| collection | NTU |
| description | Healthcare is one of the most worried concerns in the 21st century, infectious
illnesses, cancer and pathogen threaten lives incessantly. Especially the various kind
of cancers, this second leading cause of death worldwide has taken 10 million lives
away from the society every year. Thus, a rapid, accurate, economic label-free
detection of the extremely small concentration of cancer biomarkers is essential.
Whispering gallery mode (WGM) microcavity sensing is one of the most used
technology in optical and acoustic applications. With proper tuning, a special property
of WGM has found the coalesce of the eigenstates and eigenvalues at the point called
exceptional point. Exceptional point sensor shows attractive characteristics in
enhancing the sensitivity of the microcavity sensor.
In this dissertation, we focused on the sensor operate at exceptional point,
which is the special property of non-Hermitian complex matrix, it degenerates in
quantum system and is coalesced by at least two eigenstates, resonant frequencies or
energy levels. We also discussed the conventional optical microcavity sensor work at
so-called diabolic point and compare exceptional point to diabolic point in order to
obtain an enhanced sensitivity to the perturbation. The enhancement in sensitivity was
observed at least 3.0011 times higher than the traditional diabolic point microcavity
sensor. |
| first_indexed | 2024-10-01T02:38:06Z |
| format | Thesis-Master by Coursework |
| id | ntu-10356/161103 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T02:38:06Z |
| publishDate | 2022 |
| publisher | Nanyang Technological University |
| record_format | dspace |
| spelling | ntu-10356/1611032022-08-16T01:42:40Z Simulations of ultrasensitive whispering gallery mode optical microdisk resonators Feng, Wanqi Luo Yu School of Electrical and Electronic Engineering luoyu@ntu.edu.sg Engineering::Electrical and electronic engineering Healthcare is one of the most worried concerns in the 21st century, infectious illnesses, cancer and pathogen threaten lives incessantly. Especially the various kind of cancers, this second leading cause of death worldwide has taken 10 million lives away from the society every year. Thus, a rapid, accurate, economic label-free detection of the extremely small concentration of cancer biomarkers is essential. Whispering gallery mode (WGM) microcavity sensing is one of the most used technology in optical and acoustic applications. With proper tuning, a special property of WGM has found the coalesce of the eigenstates and eigenvalues at the point called exceptional point. Exceptional point sensor shows attractive characteristics in enhancing the sensitivity of the microcavity sensor. In this dissertation, we focused on the sensor operate at exceptional point, which is the special property of non-Hermitian complex matrix, it degenerates in quantum system and is coalesced by at least two eigenstates, resonant frequencies or energy levels. We also discussed the conventional optical microcavity sensor work at so-called diabolic point and compare exceptional point to diabolic point in order to obtain an enhanced sensitivity to the perturbation. The enhancement in sensitivity was observed at least 3.0011 times higher than the traditional diabolic point microcavity sensor. Master of Science (Electronics) 2022-08-16T01:42:40Z 2022-08-16T01:42:40Z 2022 Thesis-Master by Coursework Feng, W. (2022). Simulations of ultrasensitive whispering gallery mode optical microdisk resonators. Master's thesis, Nanyang Technological University, Singapore. https://hdl.handle.net/10356/161103 https://hdl.handle.net/10356/161103 en application/pdf Nanyang Technological University |
| spellingShingle | Engineering::Electrical and electronic engineering Feng, Wanqi Simulations of ultrasensitive whispering gallery mode optical microdisk resonators |
| title | Simulations of ultrasensitive whispering gallery mode optical microdisk resonators |
| title_full | Simulations of ultrasensitive whispering gallery mode optical microdisk resonators |
| title_fullStr | Simulations of ultrasensitive whispering gallery mode optical microdisk resonators |
| title_full_unstemmed | Simulations of ultrasensitive whispering gallery mode optical microdisk resonators |
| title_short | Simulations of ultrasensitive whispering gallery mode optical microdisk resonators |
| title_sort | simulations of ultrasensitive whispering gallery mode optical microdisk resonators |
| topic | Engineering::Electrical and electronic engineering |
| url | https://hdl.handle.net/10356/161103 |
| work_keys_str_mv | AT fengwanqi simulationsofultrasensitivewhisperinggallerymodeopticalmicrodiskresonators |