NDLI: Extending the Limits in Optical-Fiber Design for Higher Power Applications Using Inverse Transmission-Line Techniques

Content Provider	IEEE Xplore Digital Library
Author	Boucouvalas, A.C. Thraskias, C.A.
Copyright Year	1995
Abstract	In this paper, we present a new and efficient algorithm for the exact synthesis of large-mode-area (LMA) single-mode (SM) optical fibers supporting “perfect top-hat” modal electric-field profiles. We develop a technique for calculating directly and accurately the refractive-index profiles of such fibers from the knowledge of the top-hat modal electric field. The method we use to solve this inverse problem is via modeling the waveguide transversely as a transmission line. We demonstrate this algorithm with a number of example reconstructions of LMA SM optical fibers with perfect “top-hat” electric-field profile and an effective mode area (Aeff) size that in some cases exceeds 4000 μm². Such fiber designs reduce or suppress the nonlinear effects, such as stimulated Brillouin scattering, stimulated Raman scattering, and self-phase modulation, in high-power applications. Moreover, we expect this LMA SM top-hat fiber design to be useful in optical-damage mitigation. Last but not the least, these “perfect” top-hat electric field profiles are very promising in the field of high-power applications for achieving uniform intensity deposition on the target (material, biological tissue, etc.)
Sponsorship	IEEE Lasers and Electro-Optics Society
Starting Page	1
Ending Page	7
Page Count	7
File Size	738982
File Format	PDF
ISSN	1077260X
Volume Number	22
Issue Number	2
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2016-01-01
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 fibers Electric fields Refractive index Image reconstruction Power transmission lines Optical fiber dispersion inverse transmission line (TL) technique Large mode area optical fibres high-power lasers modeflattened designs High-power lasers
Content Type	Text
Resource Type	Article
Subject	Atomic and Molecular Physics, and Optics Electrical and Electronic Engineering

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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