Subject Area
Mechanical Engineering
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
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
