Title: Microstructured optical fibers for gas sensing systems

Abstract

Microstructured optical fiber (MOF) includes a cladding extending a length between first and second ends. The cladding includes an inner porous microstructure that at least partially surrounds a hollow core. A perimeter contour of the hollow core has a non-uniform radial distance from a center axis of the cladding such that first segments of the cladding along the perimeter contour have a shorter radial distance from the center axis relative to second segments of the cladding along the perimeter contour. The cladding receives and propagates light energy through the hollow core, and the inner porous microstructure substantially confines the light energy within the hollow core. The cladding defines at least one port hole that extends radially from an exterior surface of the cladding to the hollow core. Each port hole penetrates the perimeter contour of the hollow core through one of the second segments of the cladding.

Inventors:

Challener, William Albert; Choudhury, Niloy; Palit, Sabarni

Issue Date:

Tue Oct 17 00:00:00 EDT 2017

Research Org.:

GE Global Research, Niskayuna, New York (United States)

Sponsoring Org.:

USDOE

OSTI Identifier:

1399910

Patent Number(s):

9791619

Application Number:

14/876,411

Assignee:

General Electric Company

Patent Classifications (CPCs):

G - PHYSICS G01 - MEASURING G01J - MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRA-RED, VISIBLE OR ULTRA-VIOLET LIGHT

G - PHYSICS G01 - MEASURING G01N - INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES

Show more

G - PHYSICS G01 - MEASURING G01J - MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRA-RED, VISIBLE OR ULTRA-VIOLET LIGHT

G01J3/0218 - {using optical fibers}
G01J3/0221 - {the fibers defining an entry slit}
G01J3/42 - Absorption spectrometry

G - PHYSICS G01 - MEASURING G01N - INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES

G01N21/0303 - {Optical path conditioning in cuvettes, e.g. windows
G01N21/3504 - for analysing gases, e.g. multi-gas analysis
G01N2201/08 - Optical fibres
G01N2201/088 - Using a sensor fibre

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

G02B6/02309 - {Structures extending perpendicularly or at a large angle to the longitudinal axis of the fibre, e.g. photonic band gap along fibre axis}
G02B6/02328 - {Hollow or gas filled core}
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}
G02B6/02347 - {Longitudinal structures arranged to form a regular periodic lattice, e.g. triangular, square, honeycomb unit cell repeated throughout cladding}
G02B6/02366 - {Single ring of structures, e.g. "air clad"}
G02B6/02371 - {Cross section of longitudinal structures is non-circular}
G02B6/024 - with polarisation maintaining properties

Show less

DOE Contract Number:  

AR0000543

Resource Type:

Patent

Resource Relation:

Patent File Date: 2015 Oct 06

Country of Publication:

United States

Language:

English

Subject:

36 MATERIALS SCIENCE