Optical waveguide sensors
First Claim
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1. An optical waveguide sensor comprising:
- a waveguide core;
a reflective cladding; and
at least one intermediate layer positioned between said waveguide core and said reflective cladding wherein said at least one intermediate layer comprises a material responsive to at least one environmental stimulus selected from the group consisting of ultraviolet radiation and ionizing radiation; and
wherein refractive indices of said core (n1), said at least one intermediate layer (n2) and said reflective cladding (n3) obey the relationship n2≧
n1>
n3.
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Abstract
An optical waveguide sensor using an intermediate layer between the preformed optical core and the optical cladding material. This intermediate layer comprises a material that is doped with a sensor material to respond to an analyte of interest by luminescing or by developing optical absorption in the transmission region of the core fiber and that has a refractive index greater than the preformed core. Two configurations provide sensors for ionizing radiation capable of measuring the dose rate and the integrated deposited dose.
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Citations
20 Claims
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1. An optical waveguide sensor comprising:
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a waveguide core;
a reflective cladding; and
at least one intermediate layer positioned between said waveguide core and said reflective cladding wherein said at least one intermediate layer comprises a material responsive to at least one environmental stimulus selected from the group consisting of ultraviolet radiation and ionizing radiation; and
wherein refractive indices of said core (n1), said at least one intermediate layer (n2) and said reflective cladding (n3) obey the relationship n2≧
n1>
n3.- View Dependent Claims (2, 3, 4, 5, 6)
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7. An optical waveguide sensor comprising:
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a waveguide core comprising an outer surface; and
a layer positioned on said outer surface of said waveguide core wherein said layer comprises a material responsive to at least one environmental stimulus selected from the group consisting of ultraviolet radiation and ionizing radiation. - View Dependent Claims (8, 9, 10, 11, 12, 13)
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14. A method for fabricating an optical waveguide sensor comprising the steps of:
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a) providing a waveguide core having an outer surface; and
b) affixing an intermediate layer to the outer surface of the waveguide core wherein the intermediate layer comprises a material responsive to at least one environmental stimulus selected from the group consisting of ultraviolet radiation and ionizing radiation. - View Dependent Claims (15, 16, 17, 18, 19, 20)
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Specification