Waveguide-based optical chemical sensor

Grace, Karen M; Swanson, Basil I; Honkanen, Seppo

Title: Waveguide-based optical chemical sensor

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Abstract

The invention provides an apparatus and method for highly selective and sensitive chemical sensing. Two modes of laser light are transmitted through a waveguide, refracted by a thin film host reagent coating on the waveguide, and analyzed in a phase sensitive detector for changes in effective refractive index. Sensor specificity is based on the particular species selective thin films of host reagents which are attached to the surface of the planar optical waveguide. The thin film of host reagents refracts laser light at different refractive indices according to what species are forming inclusion complexes with the host reagents.

Inventors:

Grace, Karen M ^[1]; Swanson, Basil I ^[2]; Honkanen, Seppo ^[3]

Ranchos de Taos, NM
Los Alamos, NM
Tucson, AZ

Issue Date:: 2007-03-13

Research Org.:: Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Univ. of California (United States)

Sponsoring Org.:: USDOE

OSTI Identifier:: 902826

Patent Number(s):: 7190851

Application Number:

Assignee:: Los Alamos National Security, LLC (Los Alamos, NM)

Patent Classifications (CPCs):: G - PHYSICS G01 - MEASURING G01N - INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES

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

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G - PHYSICS G01 - MEASURING G01N - INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
G01N2021/7776 - {Index}
G01N21/7703 - {using reagent-clad optical fibres or optical waveguides
G01N2021/7709 - {Distributed reagent, e.g. over length of guide}

G - PHYSICS G02 - OPTICS G02B - OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
G02B6/105 - {having optical polarisation effects}

G - PHYSICS G01 - MEASURING G01N - INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
G01N21/21 - Polarisation-affecting properties

G - PHYSICS G02 - OPTICS G02B - OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
G02B6/1221 - {made from organic materials}

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DOE Contract Number:: W-7405-ENG-36

Resource Type:: Patent

Country of Publication:: United States

Language:: English

Subject:: 47 OTHER INSTRUMENTATION

Citation Formats


                    Grace, Karen M, Swanson, Basil I, and Honkanen, Seppo. Waveguide-based optical chemical sensor.  United States: N. p., 2007. 
        Web.

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                    Grace, Karen M, Swanson, Basil I, & Honkanen, Seppo. Waveguide-based optical chemical sensor.  United States.

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                    Grace, Karen M, Swanson, Basil I, and Honkanen, Seppo. Tue .  
        "Waveguide-based optical chemical sensor".  United States.  https://www.osti.gov/servlets/purl/902826.

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@article{osti_902826,

  title        = {Waveguide-based optical chemical sensor},

  author       = {Grace, Karen M and Swanson, Basil I and Honkanen, Seppo},

  abstractNote = {The invention provides an apparatus and method for highly selective and sensitive chemical sensing. Two modes of laser light are transmitted through a waveguide, refracted by a thin film host reagent coating on the waveguide, and analyzed in a phase sensitive detector for changes in effective refractive index. Sensor specificity is based on the particular species selective thin films of host reagents which are attached to the surface of the planar optical waveguide. The thin film of host reagents refracts laser light at different refractive indices according to what species are forming inclusion complexes with the host reagents.},

  doi          = {},

  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {2007},

  month        = {3}

}

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