Abstract
This thesis proposes a light-weight, compact, and accurate optical micro-seismometer that could be used in many applications, such as planetary exploration. The sensor proposed here is based on the principle of whispering gallery optical mode (WGM) resonance shifts of a dielectric micro-resonator due to disturbances of its evanescent field. The micro-seismometer could be used in place of the traditional bulky seismometers. The design of a waveguide-resonator and mechanical structure to disturb the evanescent field are presented. A proof-of-concept a seismometer model that uses a 5µm ring resonator is numerically tested with actual seismic data. The results show that a WGM-based optical micro-seismometer may be feasible.
Degree Date
Fall 12-15-2018
Document Type
Thesis
Degree Name
M.S.M.E.
Department
Mechanical Engineering
Advisor
M. Volkan Otugen
Subject Area
Mechanical Engineering
Number of Pages
79
Format
Creative Commons License
This work is licensed under a Creative Commons Attribution-Noncommercial 4.0 License
Recommended Citation
Da Silva, Jaime, "Optical Micro-Seismometer Based on Evanescent Field Perturbation of Whispering Gallery Modes" (2018). Mechanical Engineering Research Theses and Dissertations. 11.
https://scholar.smu.edu/engineering_mechanical_etds/11
Included in
Acoustics, Dynamics, and Controls Commons, Atomic, Molecular and Optical Physics Commons, Electromagnetics and Photonics Commons, Geophysics and Seismology Commons, Optics Commons
