Enhanced interferometric methods for investigation of refractive index distribution changes along tapering structure in photonic crystal fibers

Leszek R. Jaroszewicz; Małgorzata Kujawińska; Karol Stasiewicz; Bartłomiej Siwicki; Sławomir Wójcik; Paweł Marć

doi:10.1117/12.870785

13 September 2010 Enhanced interferometric methods for investigation of refractive index distribution changes along tapering structure in photonic crystal fibers

Leszek R. Jaroszewicz, Małgorzata Kujawińska, Karol Stasiewicz, Bartłomiej Siwicki, Sławomir Wójcik, Paweł Marć

Author Affiliations +

Proceedings Volume 7387, Speckle 2010: Optical Metrology; 73870R (2010) https://doi.org/10.1117/12.870785
Event: Speckle 2010, 2010, Florianapolis, Brazil

Abstract

The paper presents the analysis and enhancements of interferometric methods which may provide better quality projections for tomographic, in-line determination of geometry and refractive index distribution changes along classical as well as photonic crystal fiber tapering structure. The method and system provides high optical resolution and sensitivity for determination of refractive index changes. It also provides the possibility of investigation of structures with and without circular symmetry of refractive index distribution. In the paper the interferometric tomography method in Mach-Zehnder interferometer configuration is applied and the measurements of classical and photonics crystal fibers are presented. The analysis of future use of in-line digital holographic method coupled with a variety of techniques for enhanced phase reconstruction is performed.

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Leszek R. Jaroszewicz, Małgorzata Kujawińska, Karol Stasiewicz, Bartłomiej Siwicki, Sławomir Wójcik, and Paweł Marć "Enhanced interferometric methods for investigation of refractive index distribution changes along tapering structure in photonic crystal fibers", Proc. SPIE 7387, Speckle 2010: Optical Metrology, 73870R (13 September 2010); https://doi.org/10.1117/12.870785

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