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Electrical and Computer Engineering Commons

Open Access. Powered by Scholars. Published by Universities.®

Missouri University of Science and Technology

2010

<p>Electric circuit analysis<br />Microelectromechanical systems<br />Optical resonance<br />Resonators</p>

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Excitation Of Whispering Gallery Modes In Glass Microspheres Using Optical Fiber Couplers, Sudha Sneha Devarakonda Jan 2010

Excitation Of Whispering Gallery Modes In Glass Microspheres Using Optical Fiber Couplers, Sudha Sneha Devarakonda

Masters Theses

"This research is a study conducted on the excitation of whispering gallery modes (WGM) in small micron-scale glass spheres. Optical WGM may be represented by a light wave that propagates along the surface of the sphere and reaches back itself in phase at specific wavelengths. Due to this, very high intensities of light with narrow line widths circulate in the microspheres contributing to high Q factor. The evanescent field of an optical waveguide is used to resonantly stimulate the WGM.

The WGM excitation in fused silica spheres was demonstrated in the laboratory with 60% coupling efficiency. Tapered optical fibers were …