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Integrated Nonlinear Photonic Devices


Oh, Dong Yoon (2018) Integrated Nonlinear Photonic Devices. Dissertation (Ph.D.), California Institute of Technology. doi:10.7907/Z95H7DGT.


Chip-scale nonlinear optics can provide important new functions in communications, frequency metrology and spectroscopy. Optical microcavities enhance nonlinear optical effects through resonant recirculation. This recirculation dramatically reduces the required power in applications and also lowers signal noise. A key figure-of-merit is the optical Q factor, which provides a dimensionless scale of optical storage time within the microcavity. In this thesis, a novel integrated ultra-high-Q microcavity with Q as high as 230 million is presented. The device is applied to demonstrate multiple functions including electronic-rate soliton microcomb generation and stimulated Brillouin laser operation. For soliton generation, the resonator must be engineered to produce optical mode families that feature anomalous dispersion. This engineering is applied to generate solitons at wavelengths of 1064 nm and 778 nm. Systems-on-a-chip applications of these devices are discussed including compact optical synthesizers, optical clocks and rotation sensors. Finally, a compact array of silica ridge waveguides is described and applied for efficient and coherent ultraviolet-to-visible comb generation by dispersive-wave generation. Unlike other devices used to broaden spectra such as micro-structured fibers, these arrays provide a wide range of emission wavelength choices on a single chip. The arrays can also enable mode-locked lasers to attain greatly extended spectral reach for spectroscopy, bioimaging, tomography and metrology.

Item Type:Thesis (Dissertation (Ph.D.))
Subject Keywords:Nonlinear Optics; Integrated Photonics; Supercontinuum Generation; Microresonator Solitons
Degree Grantor:California Institute of Technology
Division:Engineering and Applied Science
Major Option:Applied Physics
Thesis Availability:Public (worldwide access)
Research Advisor(s):
  • Vahala, Kerry J.
Group:Institute for Quantum Information and Matter
Thesis Committee:
  • Painter, Oskar J. (chair)
  • Vahala, Kerry J.
  • Faraon, Andrei
  • Scherer, Axel
Defense Date:11 August 2017
Record Number:CaltechTHESIS:11122017-215023206
Persistent URL:
Related URLs:
URLURL TypeDescription adapted for Chapter 2 and Chapter 3 adapted for Chapter 4 39.001046DOIArticle adapted for Chapter 5 adapted for Chapter 6
Oh, Dong Yoon0000-0001-6716-1851
Default Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:10554
Deposited By: Dong Yoon Oh
Deposited On:14 Nov 2017 23:14
Last Modified:02 Jun 2020 21:43

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