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Title: Optical waveguides having flattened high order modes

A deterministic methodology is provided for designing optical fibers that support field-flattened, ring-like higher order modes. The effective and group indices of its modes can be tuned by adjusting the widths of the guide's field-flattened layers or the average index of certain groups of layers. The approach outlined here provides a path to designing fibers that simultaneously have large mode areas and large separations between the propagation constants of its modes.
Inventors:
; ; ; ;
Issue Date:
OSTI Identifier:
1149998
Assignee:
Lawrence Livermore National Security, LLC (Livermore, CA) LLNL
Patent Number(s):
8,798,422
Application Number:
13/162,351
Contract Number:
AC52-07NA27344
Research Org:
LLNL (Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States))
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
47 OTHER INSTRUMENTATION

Works referenced in this record:

Design guidelines and characteristics for a kind of four-layer large flattened mode fibers
journal, November 2008
  • Zhao, Chujun; Tang, Zhixiang; Ye, Yunxia
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Flat-topped beam output from a double-clad rectangular dielectric waveguide laser with a high-index inner cladding
journal, June 2009