Hybrid layered polymer slot waveguide Young interferometer

Leila Ahmadi, Marianne Hiltunen, Petri Stenberg, Jussi Hiltunen, Sanna Aikio, Matthieu Roussey, Jyrki Saarinen, Seppo Honkanen

Research output: Contribution to journalArticleScientificpeer-review

7 Citations (Scopus)

Abstract

We demonstrate a polymer slot waveguide Young interferometer coated with a bilayer of Al2O3/TiO2. The approach enables relaxed dimensions of the polymer waveguide which simplifies the fabrication of the structure with a resolution of 50 nm. The layers were coated by an atomic layer deposition technique. The feasibility of the device was investigated by exploiting the interferometric structure as a bulk refractive index sensor operating at 975 nm wavelength for detection of an ethanol-water solution. A refractive index change of 1 * 10-6 RIU with a sensing length of only 800 µm was detected. The approach confirms the possibility of realizing a low cost device with a small footprint and enhanced sensitivity by employing the TiO2 rails in the sides of the slot waveguide.
Original languageEnglish
Pages (from-to)10275-10285
JournalOptics Express
Volume24
Issue number10
DOIs
Publication statusPublished - 2016
MoE publication typeA1 Journal article-refereed

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slots
interferometers
waveguides
polymers
refractivity
rails
footprints
atomic layer epitaxy
ethyl alcohol
fabrication
sensitivity
sensors
wavelengths
water

Cite this

Ahmadi, Leila ; Hiltunen, Marianne ; Stenberg, Petri ; Hiltunen, Jussi ; Aikio, Sanna ; Roussey, Matthieu ; Saarinen, Jyrki ; Honkanen, Seppo. / Hybrid layered polymer slot waveguide Young interferometer. In: Optics Express. 2016 ; Vol. 24, No. 10. pp. 10275-10285.
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Ahmadi, L, Hiltunen, M, Stenberg, P, Hiltunen, J, Aikio, S, Roussey, M, Saarinen, J & Honkanen, S 2016, 'Hybrid layered polymer slot waveguide Young interferometer', Optics Express, vol. 24, no. 10, pp. 10275-10285. https://doi.org/10.1364/OE.24.010275

Hybrid layered polymer slot waveguide Young interferometer. / Ahmadi, Leila; Hiltunen, Marianne; Stenberg, Petri; Hiltunen, Jussi; Aikio, Sanna; Roussey, Matthieu; Saarinen, Jyrki; Honkanen, Seppo.

In: Optics Express, Vol. 24, No. 10, 2016, p. 10275-10285.

Research output: Contribution to journalArticleScientificpeer-review

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AU - Ahmadi, Leila

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AU - Saarinen, Jyrki

AU - Honkanen, Seppo

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