Whispering gallery modes thesis

Whispering Gallery Modes Thesis


Download Free PDF Impact of Kerr nonlinearity on the whispering gallery modes of a microsphere.Whispering gallery modes (WGMs) are surface modes that propagate azimuthally around resonators with rotational symmetry (toroidal, spherical, or, as in our case, cylindrical shaped, since the optical fiber itself plays the role of the microresonator).CALCULATION OF COUPLING BETWEEN TAPERED FIBER MODES AND WHISPERING-GALLERY MODES OF A SPHERICAL MICROLASER Thesis Approved: Donna K.These modes are commonly imagined as closed-trajectory rays confined within the cavity by almost total reflections from the curved surface of the resonator Whispering gallery mode sensors.This results is a nearly four-order of magni-tude improvement with respect to other wafer-scale microcavities.A small change in the size, shape or optical constants of the microsphere causes a shift in the resonant frequency (or the WGM).These disk can be whispering gallery modes thesis fabricated with a very high Quality Factor (Q-factor, de ned in Equa-tions (1) and (2)).This thesis presents a full-vectorial mode matching method for whispering gallery microcavity analysis.However, integrated WGM sensor devices are still in their infancy.PhD thesis available as a pdf file.We present a comprehensive overview of sensor technology exploiting optical whispering gallery mode (WGM) resonances., University of Victoria, 2013 A Thesis Submitted in Partial Ful llment of the Requirements for the Degree of MASTER OF APPLIED SCIENCE in the Department of Electrical and Computer Engineering c Serge M.These disk can be fabricated with a very high Quality Factor (Q-factor, de ned in Equa-tions (1) and (2)).WGM is named after the whispering gallery at St.For example, a compression force applied to the microsphere will lead to a change in both its shape and its index of refraction distribution.Whispering gallery mode (WGM) microresonators have attracted great interests due to the significantly enhanced light-matter interactions originating from their high quality factors and small mode volumes.In Electrical Engineer in 2005, and a M.The whispering gallery mode (WGM) bio-sensor marries electromagnetics and whispering gallery modes thesis photonics with biology and returns very high sensitivity., Resonant detection of nano to microscopic objects using whispering gallery modes, PhD whispering gallery modes thesis Thesis, The Rockefeller University (2004).Whispering Gallery Modes / of [] = =.Vincent, 2015 University of Victoria.Whispering gallery modes - IEEE Technology Navigator.In chapter2, a general description of the properties of whispering-gallery modes and their occurence in optical microcavities is given.3 summarizes results for propagation constants of fundamental and first.Article ADS Google Scholar [122].Whispering gallery mode sensors.

Modes gallery thesis whispering

The numerical algorithm was based on the Lippmann-Schwinger equation for the scattering of a two-dimensional plane wave at multiple whispering gallery modes thesis coupled disk arrays.7 ) and is a proper long-lived guided mode (unlike the leaky mode of the GMR or the whispering gallery modes thesis very lossy.Experiments were performed to verify light grouping together to form whispering gallery modes as predicted by Zemax V ollmer F.We study from a theoretical point of view whispering gallery modes (WGM) in graded index micro-disk resonators where the refractive optical index varies with the radial position.These modes are resonant in optical wavelength, and the spectral position of the resonances depends on the radius and the refractive index of.In this thesis, I have investigated the linear and nonlinear optical properties of whispering-gallery microdisk and microring resonators side coupled to an ordi-nary waveguide.– Whispering gallery modes: Basic properties The electromagnetic surface oscillation in optical cavity is traditionally termed whis-pering gallery mode., Resonant detection of nano to microscopic objects using whispering gallery modes, PhD Thesis, The Rockefeller University (2004).Keng – Whispering Gallery Mode bioparticle sensing and transport - v - VITA Ta Kang (David) Keng was born on June 17, 1983 in Moorhead, Minnesota., Xi’An JiaoTong University, 2010 A Thesis Submitted in Partial Fulfillment of the Requirements for the Degree of MASTER OF APPLIED SCIENCE in the Department of Electrical and Computer Engineering.The drop’s optical whispering gallery modes (WGMs) and its surface vibrations should couple to each other via the usual optomechanical interactions.In this work, we introduced a sensor device structure which is a step closer to commercial exploitation and mass production of monolithic WGM sensor.In the course of implementing this scheme, microcavity devices, such as microspheres and microbubbles were studied for topics as diverse.Whispering gallery modes in layered microspheres: mode structure, thermal response, and reactive sensing.The mode is strongly confined to the waveguide ( Fig.Disclaimer: nascent-minds is dedicated to providing an ethical tutoring service.After a short introduction we begin by detailing the fundamental principles and theory of WGMs in optical microcavities and the transduction mechanisms frequently employed for sensing purposes The whispering gallery mode is very sensitive to external refractive index changes.The whispering-gallery-mode microcavities have been widely applied in chemical and biological sensing due to their tiny mode volume and high-quality factor.The whispering-gallery mode microdisk or microsphere resonators have supercompact size, high energy storage, very narrow resonance bandwidth, and high sensitivity.For a sphere of radius a and refractive index n in air, the potential function in a spherical coordinate system (r.In this dissertation, two different approaches, whispering gallery mode resonance by fiber bending and cladding mode resonance by long-period gratings, are investigated to convert the core mode to the cladding bounded modes for such an interaction.Angle to enter the whispering gallery mode.We are particularly interested in the effect which a nanoparticle has on the so called photonic atom modes (a.The aim of this thesis was to verify.View whispering gallery modes thesis Academics in Whispering Gallery Modes on Academia.First, bending the optical fibers can induce the core mode to radiate into the cladding This thesis treats ring and disc microresonators within a 2D model.In Biomedical Engineering in 2007 from Polytechnic University spectral mode structure [15-17].Experiments were performed that validated the models’ predictions and images were captured clearly showing the spatial distribution shift of the light within the core of the fiber.These results are then compared to the theoretical predictions that inspired this research.Coupling and in getting the literature on whispering-gallery mode.For example, a compression force applied to the microsphere will lead to a change in both its shape and its index of refraction distribution.

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