A Planar low-cost full-polymer Optical Humidity Sensor | Zendy

Christian Kelb | Zendy; Martin Körner | Zendy; Oswald Prucker | Zendy; Jürgen Rühe | Zendy; Eduard Reithmeier | Zendy; Bernhard Roth | Zendy

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A Planar low-cost full-polymer Optical Humidity Sensor

Author(s) -

Christian Kelb,

Martin Körner,

Oswald Prucker,

Jürgen Rühe,

Eduard Reithmeier,

Bernhard Roth

Publication year - 2016

Publication title -

procedia technology

Language(s) - English

Resource type - Journals

ISSN - 2212-0173

DOI - 10.1016/j.protcy.2016.08.066

Subject(s) - cladding (metalworking) , materials science , planar , humidity , lamination , fabrication , optical fiber , scattering , polymer , optoelectronics , composite material , optics , computer science , layer (electronics) , medicine , computer graphics (images) , physics , alternative medicine , pathology , thermodynamics

We present an all-polymer optical humidity sensor, based on a 1mm plastic optical fiber (POF) with a U-bend, cladded with poly(N,N-dimethylacrylamide) (PDMAA) in the sensing region. The cladding changes its scattering properties on absorption of environmental humidity, thus modulating the transmitted optical power through the sensor. We explain the working principle of the sensor and show experimental results regarding scattering behavior of the cladding material and sensitivity to sudden humidity changes. We also propose a planar layout suitable for application to a hot embossing or lamination process for large-scale fabrication

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