Low-Cost Intrinsic Fiber Optic pH Sensor using Sol-Gel Immobilized NIR Dyes

H. Lehmann; G. Schwotzer; P. Czerney; P. Czerney; R. Willsch

doi:10.1364/OFS.1996.Th32

Optical Fiber Sensors
(Optica Publishing Group, 1996),
paper Th32
•https://doi.org/10.1364/OFS.1996.Th32

Low-Cost Intrinsic Fiber Optic pH Sensor using Sol-Gel Immobilized NIR Dyes

H. Lehmann, G. Schwotzer, P. Czerney, and R. Willsch

Optical Fiber Sensors 1996

Sapporo Japan
ISBN: 0-8194-3044-7

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H. Lehmann, G. Schwotzer, P. Czerney, and R. Willsch, "Low-Cost Intrinsic Fiber Optic pH Sensor using Sol-Gel Immobilized NIR Dyes," in Optical Fiber Sensors, (Optica Publishing Group, 1996), paper Th32.

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Abstract

An intrinsic fiber optic pH sensor based on a sol-gel immobilized acidochromic acridinestyrile dye is presented. The absorption maximum of the applied dye at 670 nm wavelength fits well to the emission of cheap GaAlAs laser diodes.

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