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Degenerate Band Edge Resonators in Silicon Photonics
Burr, Justin R

2015, Doctor of Philosophy, Ohio State University, Electrical and Computer Engineering.
Photonic band gaps form in infinitely periodic dielectric structures. The propagation of light for frequencies close to the edge of a photonic band gap is highly dispersive and at the band edge the group velocity is zero. In finite length periodic dielectric structures, resonances form when forward and backward propagating modes constructively interfere. On resonance, the modal fields extend over the entire periodic structure. These large and distributed modal fields have been exploited for applications in light emission, optical switching and nonlinear optics. However, transmission resonances near a regular band edge are limited by quality factors that scale only as the third power of the number of periods. Resonances near a degenerate band edge can scale to the fifth power of the number periods. This work is the first experimental demonstration of Quality factor scaling to the fifth power. Transmission resonances near a degenerate band edge are realized in silicon strip waveguides with one-dimensional periodicity. The design and simulation of one dimensional periodic strip DBE cavities is presented. Experimental results include measurement of quality factor of 27,000 in a 35 period cavity. Transmission measurements show Fano resonances with a sharp transmission peak to bandgap extinction ratio of 20 dB.
Ronald Reano, PhD (Advisor)
George Valco, PhD (Committee Member)
Fernando Teixeira, PhD (Committee Member)
75 p.

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Burr, J. (2015). Degenerate Band Edge Resonators in Silicon Photonics. (Electronic Thesis or Dissertation). Retrieved from https://etd.ohiolink.edu/

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Burr, Justin. "Degenerate Band Edge Resonators in Silicon Photonics." Electronic Thesis or Dissertation. Ohio State University, 2015. OhioLINK Electronic Theses and Dissertations Center. 23 Nov 2017.

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Burr, Justin "Degenerate Band Edge Resonators in Silicon Photonics." Electronic Thesis or Dissertation. Ohio State University, 2015. https://etd.ohiolink.edu/

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