Abstract
Whispering gallery mode (WGM) micro-resonators have attracted significant attentionin recent years due to their diverse applications in sensing, optical communications, and frequency comb generation. The Surface Nanoscale Axial Photonics (SNAP) platform has risen as a notable technique for creating photonic structures with ultra-low loss, characterized by extraordinary precision to the tune of 0.1 angstroms. This thesis presents two novel and complementary approaches for fabricating WGM-based bottle micro-resonators.
The first approach involves a permanent deformation method, wherein SNAP microresonators are fabricated using a heat treatment process with a butane flame. The second approach introduces a reversible deformation technique based on elastic bending, offering tunability and adaptability for various applications. The non-disruptive nature of this second method allows for its integration with other fabrication techniques. Both methods provide angstrom-precise control over fabrication, resulting in stable and high quality bottle resonators.
We thoroughly investigate and experimentally validate these fabrication approaches,
demonstrating high fabrication precision and quality factors. A comparison of the
advantages and limitations of each method contributes to a deeper understanding of
SNAP-based micro-resonator fabrication and paves the way for future advancements in
the rapidly evolving field of photonics.
Date of Award | Nov 2023 |
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Original language | English |
Supervisor | Misha Sumetsky (Supervisor) & Sergey Sergeyev (Supervisor) |
Keywords
- Photonics
- Bottle resonator
- Tunability