Title: Waveguides having patterned, flattened modes

Abstract

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:

Messerly, Michael J.; Pax, Paul H.; Dawson, Jay W.

Issue Date:

Tue Oct 27 00:00:00 EDT 2015

Research Org.:

Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)

Sponsoring Org.:

USDOE

OSTI Identifier:

1224435

Patent Number(s):

9170367

Application Number:

13/804,252

Assignee:

Lawrence Livermore National Security, LLC (Livermore, CA)

Patent Classifications (CPCs):

C - CHEMISTRY C03 - GLASS C03B - MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES

G - PHYSICS G02 - OPTICS G02B - OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS

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C - CHEMISTRY C03 - GLASS C03B - MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES

C03B2203/22 - Radial profile of refractive index, composition or softening point
C03B37/01211 - {by inserting one or more rods or tubes into a tube}
C03B37/01413 - {Reactant delivery systems
C03B37/01807 - {Reactant delivery systems, e.g. reactant deposition burners}

G - PHYSICS G02 - OPTICS G02B - OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS

G02B6/0008 - {the light being emitted at the end of the fibre}
G02B6/02 - Optical fibre with cladding {with or without a coating}
G02B6/02042 - {Multicore optical fibres}
G02B6/02338 - {Structured core, e.g. core contains more than one material, non-constant refractive index distribution in core, asymmetric or non-circular elements in core unit, multiple cores, insertions between core and clad}

H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01S - DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT

H01S3/06741 - {Photonic crystal fibre, i.e. the fibre having a photonic bandgap}

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DOE Contract Number:  

AC52-07NA27344

Resource Type:

Patent

Resource Relation:

Patent File Date: 2013 Mar 14

Country of Publication:

United States

Language:

English

Subject:

43 PARTICLE ACCELERATORS