Design and Simulation of Transmission Properties of Hollow Bragg Fibers Fabricated from Omnidirectionally Reflective Composite Dielectric Materials
Abstract
In Phase I we developed an extensive set of tools to simulate the performance of Omni-Guide fibers; hollow. high POWER transmission fibers employing an omni-directional dielectric minor as the confining mechanism. Separately. we have experimentally confirmed the validity of many of the tools. Our theoretical/numerical analysis of field propagation through Omni-Guide fibers addressed several major design aspects (Fig. 1.1.). Objectives for the tools we developed were as follows: 1) Optimal design of Omni Guide fibers. including reduction of absorption and radiation losses. 2) Assessment of coupling efficiency between the high power lasers and the guided modes of an Omni-Guide fiber. 3) Determination of beam quality degradation (M2) due to the inter-modal scattering caused by bends and other fiber imperfections. including diameter and ellipticity variations along the fiber. 4) Determination of the thermal stability of the fibers including equilibrium and non-equilibrium temperature distributions across the fiber due to CW and pulsed sources. Study of the effects of bends and other geometrical variations on fiber heating. 5) Analysis of devices based on Omni-Guide fibers using the Beam Propagation Method.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 2002
- Accession Number
- ADA418903
Entities
People
- M. Skorobogatiy
- Steven A. Jacobs
- Yoel Fink