Title page for etd-0618117-142151


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URN etd-0618117-142151
Author Jen-Yang Huang
Author's Email Address No Public.
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Department Electro-Optical Engineering
Year 2016
Semester 2
Degree Master
Type of Document
Language zh-TW.Big5 Chinese
Title Wavelength conversion with low operation power in low loss Ta2O5 based micro-ring resonator
Date of Defense 2017-06-19
Page Count 92
Keyword
  • Tantalum Pentoxide(Ta2O5)
  • Waveguide
  • Resonant cavity
  • Four-wave mixing
  • Micro-ring
  • Abstract In this thesis, we have demonstrated wavelength conversion with low operation power in low loss Ta2O5 based micro-ring resonator. Based on a reflow process on the developed resist, the sidewall of waveguide device is optimized and becomes smooth. The propagation loss of ring resonator with diameter of 100μm is as low as 0.5cm^-1, and the gap between waveguide and ring cavity is set as 700nm. The corresponding loaded/unloaded Q are 50000/182000. It is a current record of Ta2O5 based micro-ring resonator. For nonlinear optical applications, the high efficient four-wave mixing conversion efficiency of -30dB has been achieved by using high quality factor Ta2O5 based micro-ring resonator at pump power of merely 6mW. With the ring resonator, the four-wave mixing conversion efficiency can be significantly enhanced by comparing to that of straight waveguide structure. In addition, the nonlinear refractive index (n2) of Ta2O5 at 1550nm is estimated to be 1.4×10^-14cm^2/W, which is higher than other optical materials (For instance, SiO2, Si3N4, AlN and Hydex…etc.). As a result, Ta2O5 based micro-ring resonator shows great potentials in developing chip-scale nonlinear photonics.
    Advisory Committee
  • Ann-Kuo Chu - chair
  • Min-Hsiung Shih - co-chair
  • Yuan-Yao Lin - co-chair
  • Yi-Jen Chiu - co-chair
  • Chao-Kuei Lee - advisor
  • Files
  • etd-0618117-142151.pdf
  • Indicate in-campus at 5 year and off-campus access at 5 year.
    Date of Submission 2017-07-18

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