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Title: Waveguides having patterned, flattened modes

Field-flattening strands may be added to and arbitrarily positioned within a field-flattening shell to create a waveguide that supports a patterned, flattened mode. Patterning does not alter the effective index or flattened nature of the mode, but does alter the characteristics of other modes. Compared to a telecom fiber, a hexagonal pattern of strands allows for a three-fold increase in the flattened mode's area without reducing the separation between its effective index and that of its bend-coupled mode. Hexagonal strand and shell elements prove to be a reasonable approximation, and, thus, to be of practical benefit vis-a-vis fabrication, to those of circular cross section. Patterned flattened modes offer a new and valuable path to power scaling.
Inventors:
; ;
Issue Date:
OSTI Identifier:
1224435
Assignee:
Lawrence Livermore National Security, LLC (Livermore, CA) LLNL
Patent Number(s):
9,170,367
Application Number:
13/804,252
Contract Number:
AC52-07NA27344
Resource Relation:
Patent File Date: 2013 Mar 14
Research Org:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
43 PARTICLE ACCELERATORS

Other works cited in this record:

Flat-topped beam output from a double-clad rectangular dielectric waveguide laser with a high-index inner cladding
journal, June 2009

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