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Proceedings Paper

Computational model and simulation for the whispering gallery modes inside micro-optical cavity
Author(s): Amir R. Ali; Abanoub M. Erian; Kirelloss Shokry
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Paper Abstract

A computational model for the whispering gallery modes inside a microsphere resonator is presented. In the archetypical microsphere resonator sensor, a tunable laser light beam is injected into an optical fiber and coupled with the resonator’s cavity. The resonant optical coupling is achieved by bringing the fiber in the vicinity of the cavity’s evanescent field. The transmission spectrum is then observed to detect the WGM shifts. In this paper, two-dimensional models of a single laser source put near the equator of a microsphere are simulated using COMSOL Multi-physics 5.1 electromagnetic waves, beam envelopes library. Afterwards, a three-dimensional model of two laser sources put near the horizontal and vertical equators of a microsphere is computed. The transmission spectrum of both simulations was taken and cross correlation was performed on them. Results show a big similarity between both simulations and could bring a breakthrough in the area of optical sensors.

Paper Details

Date Published: 30 May 2017
PDF: 9 pages
Proc. SPIE 10246, Smart Sensors, Actuators, and MEMS VIII, 102461C (30 May 2017); doi: 10.1117/12.2265814
Show Author Affiliations
Amir R. Ali, The German Univ. in Cairo (Egypt)
Southern Methodist Univ. (United States)
Abanoub M. Erian, The German Univ. in Cairo (Egypt)
Kirelloss Shokry, The German Univ. in Cairo (Egypt)
Univ. Twente (Netherlands)

Published in SPIE Proceedings Vol. 10246:
Smart Sensors, Actuators, and MEMS VIII
Luis Fonseca; Mika Prunnila; Erwin Peiner, Editor(s)

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