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Proceedings Paper

Modelling and characterization of diffractive optical propagation inside MEMS variable optical attenuator
Author(s): Xuhan Dai; Xiaolin Zhao; Bingchu Cai; Ying Cao
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Paper Abstract

Power management is an increasingly concerned issue in all-optical network, where the continuous adjustment of the transmitted power is required. In this paper, the diffractive optical propagation inside a magnetic actuated, surface micromachined variable optical attenuator has been modeled and characterized. The modeling of the diffractive optical propagation is based on a gaussian beam approximation to the fiber mode, a calculation of the free space diffraction past a square aperture based on the Fresnel-Kirkhoff diffraction integral, and the mode-overlap integral between the diffracted beam and the fiber mode. The fabrication of the attenuator is based on the nonsilicon surface micromachine technology. The experimental data is in good agreement with the theoretical calculation result. Based on the work, a variable optical attenuator (VOA) has been successfully developed.

Paper Details

Date Published: 9 September 2002
PDF: 4 pages
Proc. SPIE 4920, Advanced Sensor Systems and Applications, (9 September 2002); doi: 10.1117/12.481965
Show Author Affiliations
Xuhan Dai, Shanghai Jiaotong Univ. (China)
Xiaolin Zhao, Shanghai Jiaotong Univ. (China)
Bingchu Cai, Shanghai Jiaotong Univ. (China)
Ying Cao, Shanghai Normal University (China)

Published in SPIE Proceedings Vol. 4920:
Advanced Sensor Systems and Applications
Yun-Jiang Rao; Julian D. C. Jones; Hiroshi Naruse; Robert I. Chen, Editor(s)

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