Modelling and characterization of diffractive optical propagation inside MEMS variable optical attenuator

Xuhan Dai; Xiaolin Zhao; Bingchu Cai; Ying Cao

doi:10.1117/12.481965

9 September 2002 Modelling and characterization of diffractive optical propagation inside MEMS variable optical attenuator

Xuhan Dai, Xiaolin Zhao, Bingchu Cai, Ying Cao

Author Affiliations +

Proceedings Volume 4920, Advanced Sensor Systems and Applications; (2002) https://doi.org/10.1117/12.481965
Event: Photonics Asia, 2002, Shanghai, China

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.

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Xuhan Dai, Xiaolin Zhao, Bingchu Cai, and Ying Cao "Modelling and characterization of diffractive optical propagation inside MEMS variable optical attenuator", Proc. SPIE 4920, Advanced Sensor Systems and Applications, (9 September 2002); https://doi.org/10.1117/12.481965

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