Comment on “Application of Fresnel diffraction to nondestructive measurement of the refractive index of optical fibers”

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Títol: Comment on “Application of Fresnel diffraction to nondestructive measurement of the refractive index of optical fibers”
Autors: Taleb, Soumia Imane | Neipp, Cristian | Francés, Jorge
Grups d'investigació o GITE: Holografía y Procesado Óptico
Centre, Departament o Servei: Universidad de Alicante. Departamento de Física, Ingeniería de Sistemas y Teoría de la Señal
Paraules clau: Fresnel diffraction | Optical fiber | Phase object | Metrology
Àrees de coneixement: Física Aplicada
Data de publicació: 18-de juny-2020
Editor: Society of Photo-Optical Instrumentation Engineers (SPIE)
Citació bibliogràfica: Soumia Imane Taleb, Cristian Neipp, Jorge Francés, "Comment on “Application of Fresnel diffraction to nondestructive measurement of the refractive index of optical fibers”," Opt. Eng. 59(6) 060401 (18 June 2020) https://doi.org/10.1117/1.OE.59.6.060401
Resum: We examine the validity of Eq. (5) in [A. Sabatyan and M. T. Tavassoly, “Application of Fresnel diffraction to nondestructive measurement of the refractive index of optical fibers,” Opt. Eng., 2007, Vol. 46(12), pp. 128001-1–128001-7] to describe the diffraction pattern of an optical fiber. We show that Eq. (5) must be changed to account for the phase introduced by the fiber correctly. In particular, we show that, to agree with the implicit criterion for representing traveling waves, given when using the Fresnel–Kirchoff integral [Eq. (4)], the phase introduced by the object must be carried by positive exponentials. The results obtained correcting Eq. (5) are compared with those obtained by the rigorous solution of Maxwell equations in the optical fiber. We demonstrate the importance of adequately taking into account the criterion implicitly assumed in the Fresnel–Kirchoff integral to represent traveling waves.
Patrocinadors: This work was supported by the “Ministerio de Economía Industria y Competitividad” (Spain) under Project No. FIS2017-82919-R (MINECO/AEI/FEDER, UE).
URI: http://hdl.handle.net/10045/108268
ISSN: 0091-3286 (Print) | 1560-2303 (Online)
DOI: 10.1117/1.OE.59.6.060401
Idioma: eng
Tipus: info:eu-repo/semantics/article
Drets: © 2020 Society of Photo-Optical Instrumentation Engineers (SPIE). One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this publication for a fee or for commercial purposes, and modification of the contents of the publication are prohibited.
Revisió científica: si
Versió de l'editor: https://doi.org/10.1117/1.OE.59.6.060401
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