NDLI: New near-field and far-field attenuation models for free-space variable optical attenuators

Content Provider	IEEE Xplore Digital Library
Author	Zhang, X.M. Liu, A.Q. Lu, C.
Copyright Year	1983
Abstract	Novel closed-form attenuation models have been developed for free-space variable optical attenuators (VOAs)-one deals with the near-field condition when the two single-mode fibers are aligned very close to each other while the other deals with the far-field condition. In both models, the relationship between mirror (i.e., shutter) position and attenuation is represented by a constant term and another term in the form of an extended error function. The constant term determines the insertion loss, while the error function defines the shape of the attenuation curve. Compared with the conventional model that employs time-consuming numerical integrals, these two models show clearly the physical picture of the attenuation mechanism and provide closed-form expressions of attenuation versus mirror position. They are computationally efficient for attenuator design and optimization. Numerical calculation and experimental study have also been carried out to verify the attenuation models developed in this paper.
Sponsorship	IEEE Lasers and Electro-Optics Society Optical Society of America
Starting Page	3417
Ending Page	3426
Page Count	10
File Size	975371
File Format	PDF
ISSN	07338724
Volume Number	21
Issue Number	12
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2003-12-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Optical attenuators Optical fiber polarization Mirrors Lenses Insertion loss Acoustic beams Attenuation Optical fiber communication Micromechanical devices Optical receivers
Content Type	Text
Resource Type	Article
Subject	Atomic and Molecular Physics, and Optics

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