MEMS variable optical attenuator with vernier latching mechanism

Unamuno, A. and Uttamchandani, D.G. (2006) MEMS variable optical attenuator with vernier latching mechanism. IEEE Photonics Technology Letters, 18 (1). pp. 88-90. ISSN 1041-1135

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Abstract

A microelectromechanical-systems-based moving fiber variable optical attenuator (VOA) with a Vernier latching mechanism is described in this letter. Controlled misalignment between the end-faces of two optical fibers varies the optical coupling. This is performed using a Chevron-type thermal microactuator which moves one fiber end-face with respect to the other. The moving fiber is latched in positions using a Vernier latching mechanism with 0.5-/spl mu/m step resolution. A prototype VOA has been fabricated using 80-/spl mu/m silicon-on-insulator. Optical power coupled between the two single-mode fibers varied from 3.72 to -44 dBm, and over this range the VOA latched in 30 stable positions. Insertion loss was measured to be 1.05 dB. In the unlatched mode, the 10%-90% and the 90%-10% response times of the system were measured to be 1.7 and 4.8 ms, respectively.

Creators(s): Unamuno, A. and Uttamchandani, D.G. ORCID logoORCID: https://orcid.org/0000-0002-2362-4874;
Item type:Article
ID code:7144
Keywords:micro-optics, microactuators, optical attenuators, optical fibre, fabrication, optical fibre losses, silicon-on-insulator, Electrical engineering. Electronics Nuclear engineering, Electronic, Optical and Magnetic Materials, Atomic and Molecular Physics, and Optics, Electrical and Electronic Engineering
Subjects:Technology > Electrical engineering. Electronics Nuclear engineering
Department:Faculty of Engineering > Electronic and Electrical Engineering
Depositing user: Strathprints Administrator
Date deposited:10 Nov 2008
Last modified:01 Jan 2021 08:34
URI:https://strathprints.strath.ac.uk/id/eprint/7144
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