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Proceedings Paper

MEMS tunable-finesse slotted micromirror resonator
Author(s): Muhammad A. Othman; Yasser M. Sabry; Mohamed Sadek; Ismail M. Nassar; Diaa A. Khalil
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Paper Abstract

Tunable finesse optical filters and resonators are required for some applications when the signal-to-noise ratio and spectral resolution are traded-off to optimize the system performance. They can be used as well to control the amount of energy stored inside the resonator that can be used for optical trapping and atomistic studies. In this work we report a tunable finesse optical MEMS filter in deeply-etched SOI technology. The structure is composed of an optical cavity formed between a multilayer dielectric-coated optical fiber and slotted micromirror, attached to a comb-drive actuator. The cavity length between the multilayer Bragg coated fiber and the slotted micromirror is constant, while the slit width is being varied. The slit width is controlled by the applied voltage on the actuator. Changing the slit width modulates the reflectivity of the micromirror; and hence the finesse of the optical cavity. The obtained finesse is tuned by a factor of 5 across the band of 1330 nm and 1550 nm.

Paper Details

Date Published: 22 February 2018
PDF: 6 pages
Proc. SPIE 10545, MOEMS and Miniaturized Systems XVII, 1054515 (22 February 2018); doi: 10.1117/12.2291391
Show Author Affiliations
Muhammad A. Othman, Ain Shams Univ. (Egypt)
Yasser M. Sabry, Ain Shams Univ. (Egypt)
Si-Ware Systems (Egypt)
Mohamed Sadek, Si-Ware Systems (Egypt)
Ismail M. Nassar, Ain Shams Univ. (Egypt)
Diaa A. Khalil, Ain Shams Univ. (Egypt)
Si-Ware Systems (Egypt)

Published in SPIE Proceedings Vol. 10545:
MOEMS and Miniaturized Systems XVII
Wibool Piyawattanametha; Yong-Hwa Park; Hans Zappe, Editor(s)

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