Nonlinear aluminum nitride photonic crystal measurement using tapered fiber
Kusolthossakul, Woraprach
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https://hdl.handle.net/2142/105801
Description
Title
Nonlinear aluminum nitride photonic crystal measurement using tapered fiber
Author(s)
Kusolthossakul, Woraprach
Issue Date
2019-07-09
Director of Research (if dissertation) or Advisor (if thesis)
Fang, Kejie
Department of Study
Electrical & Computer Eng
Discipline
Electrical & Computer Engr
Degree Granting Institution
University of Illinois at Urbana-Champaign
Degree Name
M.S.
Degree Level
Thesis
Keyword(s)
Tapered Fiber
Photonics Crystal
Abstract
Second harmonic generation is a nonlinear optical process that is an important bridge in the conversion between infrared and visible light. A ring resonator with a top layer of aluminum nitride, a material with high second order susceptibility, can achieve an efficient coupling between 780 nm visible light and 1550 nm infrared light. A tapered region is also integrated to improve the light transmission between an optical fiber and an on-chip waveguide. We demonstrate the high value of nonlinear coupling interaction strength, the phase matching of the mode extraction from the waveguide to the ring resonator, and the fabrication of tapered optical fiber and tapered aluminum nitride waveguide.
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