Title: Method for fabrication of sleeveless photonic crystal canes with an arbitrary shape

Abstract

The fabrication of sleeveless canes utilizes a preform with an array of glass canes in the preform. At least one tube-sleeve encircles the array of glass canes and is secured to the array of glass canes. The array of glass canes is moved into a furnace wherein the array of glass canes is heated. The furnace is maintained at a furnace temperature within the range of 2000° C. to 1700° C. and the array of glass canes is drawn from the furnace. The drawing of the array of glass canes both scales down the glass canes and elongates the glass canes. Maintaining the furnace at a furnace temperature within the range of 2000° C. to 1700° C. assures that the array of glass canes and the glass canes maintain their original shape.

Inventors:

Drachenberg, Derrek Reginald; Messerly, Michael J.; Pax, Paul H.; Tassano, Jr., John B.

Issue Date:

2023-10-17

Research Org.:

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

Sponsoring Org.:

USDOE

OSTI Identifier:

2293741

Patent Number(s):

11787727

Application Number:

15/956,018

Assignee:

Lawrence Livermore National Security, LLC (Livermore, CA)

Patent Classifications (CPCs):

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

Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE Y02P - CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS

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

C03B2203/42 - Photonic crystal fibres, e.g. fibres using the photonic bandgap PBG effect, microstructured or holey optical fibres
C03B2205/47 - Shaping the preform draw bulb before or during drawing
C03B2205/60 - Optical fibre draw furnaces
C03B37/01208 - {for making preforms of microstructured, photonic crystal or holey optical fibres}
C03B37/0122 - {for making preforms of photonic crystal, microstructured or holey optical fibres}
C03B37/02736 - {Means for supporting, rotating or feeding the tubes, rods, fibres or filaments to be drawn, e.g. fibre draw towers, preform alignment, butt-joining preforms or dummy parts during feeding
C03B37/02781 - {Hollow fibres, e.g. holey fibres}
C03B37/0279 - {Photonic crystal fibres or microstructured optical fibres other than holey optical fibres}
C03B37/03 - Drawing means, e.g. drawing drums {
C03B37/032 - {for glass optical fibres}

Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE Y02P - CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS

Y02P40/57 - Reduction of reject rates

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DOE Contract Number:  

AC52-07NA27344

Resource Type:

Patent

Resource Relation:

Patent File Date: 04/18/2018

Country of Publication:

United States

Language:

English