NDLI: Large-core single-mode waveguides with cross-sectional antiresonant confinement

Content Provider	IEEE Xplore Digital Library
Author	Llobera, A. Salinas, I. Lopez, A. Garces, I. Dominguez, C. Lora-Tamayo, E.
Copyright Year	1983
Abstract	This paper presents a single-mode waveguide based in cross-sectional antiresonant confinement. The confinement in the vertical direction is obtained placing a Fabry-Pe/spl Sigma/rot tuned at its antiresonant condition underneath the core [defining the antiresonant reflecting optical waveguides (ARROW) structure]. Small weightings are placed on both sides of the core to achieve a local increase in the effective refractive index, obtaining the so-called lateral antiresonant structures (LASs). They assure both the cross-sectional confinement and the single-mode behavior of the global structure. Simulations predict the transition of the symmetrical mode of the LAS to a bidimensional ARROW mode below the cutoff condition of the former, while at the cutoff condition of the asymmetrical LAS mode power is directly transferred to a radiative mode. Experimental results have shown that losses decrease as the lateral core width increases, which is in agreement with a minor confinement in the structure. Near-field images from a 3-mm-thick, 16 mm-wide ARROW-two-dimensional structure have shown that when a misalignment between the input optical fiber and the waveguide is produced, no higher order modes are excited, confirming the single-mode behavior of these structures.
Sponsorship	IEEE Lasers and Electro-Optics Society Optical Society of America
Starting Page	1560
Ending Page	1565
Page Count	6
File Size	464014
File Format	PDF
ISSN	07338724
Volume Number	22
Issue Number	6
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2004-06-01
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 waveguides Optical refraction Optical variables control Semiconductor waveguides Integrated optics Refractive index Optical fibers Optical devices Silicon Optical reflection
Content Type	Text
Resource Type	Article
Subject	Atomic and Molecular Physics, and Optics

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