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Proceedings Paper

Investigation of refractive index distribution in different photonic crystal fiber elements
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Paper Abstract

The paper presents the last data regarding new elements based on photonic crystal fibers such as the low-loss patch cord with a single mode fiber, the fused coupler, the asymmetric coupler for an active fiber power pump. Their fundamental optical characteristics including wavelength depending loss as a coupling ratio are presented in this paper as well as their inner structure (cross section) obtained by SEM. However, the use of SEM for the investigation of the inner element structure is destructive, thus in the last part of the paper we present the tomographic in-line determination of geometry and refractive index distribution changes along the investigated photonic structure. The analysis of different approaches to the photonic crystal fiber data capture with a sufficient optical resolution is given. The data obtained from the Mach-Zehnder interferometer with different laser sources as well as from the in-line digital holographic setup are presented and compared. The further enhancement required for the digital in-line holography is discussed.

Paper Details

Date Published: 25 October 2011
PDF: 11 pages
Proc. SPIE 8011, 22nd Congress of the International Commission for Optics: Light for the Development of the World, 801154 (25 October 2011); doi: 10.1117/12.902686
Show Author Affiliations
Leszek R. Jaroszewicz, Military Univ. of Technology (Poland)
Małgorzata Kujawińska, Warsaw Univ. of Technology (Poland)
Karol Stasiewicz, Military Univ. of Technology (Poland)
Paweł Marć, Military Univ. of Technology (Poland)
Tomasz Nasiłowski, Military Univ. of Technology (Poland)
Michał Murawski, Military Univ. of Technology (Poland)
Michał Szymański, Military Univ. of Technology (Poland)
Bartłomiej Siwicki, Warsaw Univ. of Technology (Poland)
Wojciech Krauze, Warsaw Univ. of Technology (Poland)

Published in SPIE Proceedings Vol. 8011:
22nd Congress of the International Commission for Optics: Light for the Development of the World
Ramón Rodríguez-Vera; Ramón Rodríguez-Vera; Ramón Rodríguez-Vera; Rufino Díaz-Uribe; Rufino Díaz-Uribe; Rufino Díaz-Uribe, Editor(s)

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