Computational model and simulation for the whispering gallery modes inside micro-optical cavity

Amir R. Ali; Abanoub M. Erian; Kirelloss Shokry

doi:10.1117/12.2265814

30 May 2017 Computational model and simulation for the whispering gallery modes inside micro-optical cavity

Amir R. Ali, Abanoub M. Erian, Kirelloss Shokry

Proceedings Volume 10246, Smart Sensors, Actuators, and MEMS VIII; 102461C (2017) https://doi.org/10.1117/12.2265814
Event: SPIE Microtechnologies, 2017, Barcelona, Spain

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.

Citation Download Citation

Amir R. Ali, Abanoub M. Erian, and Kirelloss Shokry "Computational model and simulation for the whispering gallery modes inside micro-optical cavity", Proc. SPIE 10246, Smart Sensors, Actuators, and MEMS VIII, 102461C (30 May 2017); https://doi.org/10.1117/12.2265814

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KEYWORDS

3D modeling

Computer simulations

Resonators

Laser sources

Electromagnetic radiation

Optical fibers

Optical sensors

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