Sensing ammonia with ferrocene-based polymer coated tapered optical fibers |
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| Authors: | Mehdi Shadaram Juan Martinez Fernando Garcia David Tavares |
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| Affiliation: | 1. Department of Electrical &2. Computer Engineering , University of Texas at El Paso , El Paso, Texas, USA;3. Department of Chemistry , University of Texas at El Paso , El Paso, Texas, USA |
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| Abstract: | Abstract The application of ferrocene-based polymers as variable index materials is discussed. The refractive index of thin film of a particular polymer known as poly(methylphenylsilyeneferrocenylene) is examined during exposure to ammonia, nitrous oxide, nitric oxide, nitrogen, carbon dioxide, carbon monoxide, and argon. A maximum of 9% deviation in the refractive index of the polymer upon exposure to ammonia is observed. The theory of operation and fabrication of polymer-coated tapered optical fiber gas sensors are explained. Experimental data is presented showing qualitative response to ammonia and other gases. |
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| Keywords: | Fiber optic gas sensors tapered optical fibers variable index materials |
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