WO1999044042A3 - Waveguide structures - Google Patents

Waveguide structures Download PDF

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Publication number
WO1999044042A3
WO1999044042A3 PCT/GB1999/000399 GB9900399W WO9944042A3 WO 1999044042 A3 WO1999044042 A3 WO 1999044042A3 GB 9900399 W GB9900399 W GB 9900399W WO 9944042 A3 WO9944042 A3 WO 9944042A3
Authority
WO
WIPO (PCT)
Prior art keywords
waveguide
medium
layer
sensing layer
substrate
Prior art date
Application number
PCT/GB1999/000399
Other languages
French (fr)
Other versions
WO1999044042A2 (en
Inventor
Kirat Singh
Nicholas John Goddard
Original Assignee
Univ Manchester
Kirat Singh
Nicholas John Goddard
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Univ Manchester, Kirat Singh, Nicholas John Goddard filed Critical Univ Manchester
Priority to EP99936118A priority Critical patent/EP1060383A2/en
Priority to AU32591/99A priority patent/AU3259199A/en
Priority to CA002321891A priority patent/CA2321891A1/en
Priority to US09/622,698 priority patent/US6483959B1/en
Priority to JP2000533742A priority patent/JP2002505425A/en
Publication of WO1999044042A2 publication Critical patent/WO1999044042A2/en
Publication of WO1999044042A3 publication Critical patent/WO1999044042A3/en

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/75—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated
    • G01N21/77—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated by observing the effect on a chemical indicator
    • G01N21/7703—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated by observing the effect on a chemical indicator using reagent-clad optical fibres or optical waveguides
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/01—Arrangements or apparatus for facilitating the optical investigation
    • G01N21/03—Cuvette constructions
    • G01N21/0303—Optical path conditioning in cuvettes, e.g. windows; adapted optical elements or systems; path modifying or adjustment
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/55—Specular reflectivity
    • G01N21/552—Attenuated total reflection
    • G01N21/553—Attenuated total reflection and using surface plasmons

Abstract

A waveguide structure comprising a medium disposed of a sensing layer (21), a second layer of material (22) having a refractive index greater than that of the medium, and a substrate (24). The structure defines a waveguide capable of supporting an optical mode confined in a sensing layer. The medium is adapted for performing chemical or biological reactions within the medium which will result in a change of an optical property of the sensing layer of the waveguide. The thickness and refractive indexes of the layers are chosen such that an optical mode confined in the sensing layer will suffer substantially anti-resonant reflection as a consequence of the interface between the sensing layer and the second layer and the interface between the second layer and the substrate. Alternatively, the waveguide may comprise a low index sensing medium held between a superstrate and a substrate each of which has a refractive index higher than that of the medium. The waveguide may be capable of supporting two modes, such that one of the modes may be used as a reference during measurement of optical properties of a medium. The waveguide may be capable of supporting a leaky waveguide mode, the presence of the leaky waveguide mode being indicated by a peak of light returned from the waveguide.
PCT/GB1999/000399 1998-02-24 1999-02-24 Waveguide structures WO1999044042A2 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
EP99936118A EP1060383A2 (en) 1998-02-24 1999-02-24 Waveguide structures
AU32591/99A AU3259199A (en) 1998-02-24 1999-02-24 Waveguide structures
CA002321891A CA2321891A1 (en) 1998-02-24 1999-02-24 Waveguide structures
US09/622,698 US6483959B1 (en) 1998-02-24 1999-02-24 Waveguide structures
JP2000533742A JP2002505425A (en) 1998-02-24 1999-02-24 Waveguide structure

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GBGB9803704.7A GB9803704D0 (en) 1998-02-24 1998-02-24 Waveguide structure
GB9803704.7 1998-02-24

Publications (2)

Publication Number Publication Date
WO1999044042A2 WO1999044042A2 (en) 1999-09-02
WO1999044042A3 true WO1999044042A3 (en) 2000-04-13

Family

ID=10827386

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB1999/000399 WO1999044042A2 (en) 1998-02-24 1999-02-24 Waveguide structures

Country Status (7)

Country Link
US (1) US6483959B1 (en)
EP (1) EP1060383A2 (en)
JP (1) JP2002505425A (en)
AU (1) AU3259199A (en)
CA (1) CA2321891A1 (en)
GB (1) GB9803704D0 (en)
WO (1) WO1999044042A2 (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9164037B2 (en) 2007-01-26 2015-10-20 Palo Alto Research Center Incorporated Method and system for evaluation of signals received from spatially modulated excitation and emission to accurately determine particle positions and distances
US9307938B2 (en) 2007-12-17 2016-04-12 Palo Alto Research Center Incorporated Controlling transfer of objects affecting optical characteristics

Also Published As

Publication number Publication date
WO1999044042A2 (en) 1999-09-02
GB9803704D0 (en) 1998-04-15
EP1060383A2 (en) 2000-12-20
CA2321891A1 (en) 1999-09-02
JP2002505425A (en) 2002-02-19
US6483959B1 (en) 2002-11-19
AU3259199A (en) 1999-09-15

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