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Proceedings Article

Low-cost microinterferometric tomography system for 3D refraction index distribution measurements in the optical fiber splices

[+] Author Affiliations
Rafal Krajewski

Warsaw Univ. of Technology (Poland) and Vrie Univ. Brussel (Belgium)

Malgorzata Kujawinska

Warsaw Univ. of Technology (Poland)

Bart Volckaerts, Hugo Thienpont

Vrije Univ. Brussel (Belgium)

Proc. SPIE 5855, 17th International Conference on Optical Fibre Sensors, 347 (August 30, 2005); doi:10.1117/12.623445
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From Conference Volume 5855

  • 17th International Conference on Optical Fibre Sensors
  • Bruges, Belgium | May 23, 2005

abstract

Nowadays development of optical networks causes significant grow of interest in reliable fiber connections. Although fiber splicing techniques are well known, the assessment of a joint quality still bases on the simple image processing estimation. In advanced applications such solution is not sufficient and more trustworthy method is needed. One of the promising techniques of reliable measurements is microinterferometric tomography which allows determination of three-dimensional refractive index distributions in phase isotropic microelements. Measurement bases on interferometric scan of the tested element. Contrary to the classical testing methods based on attenuation tests microinterferometric tomography analyses an inspected fiber with the beam passing perpendicularly to the fiber axis. Tomographic scans taken for numerous, well defined angular positions and further calculations result 3D map of the area with clearly seen splice zone. In this paper we propose the novel design of the integrated low-cost microinterferometric tomography setup (fig.1). The system is built as the waveguide Mach-Zehnder interferometer with reduced vibration sensitivity due to using the grating beamsplitter and recombiner. Additionally we present the details of design of microinterferometric tomography setup and the initial remarks on the possibility to fabricate it with Deep Lithography with Protons (DLP) - unique master prototyping technology of fabrication both micromechanical and microoptical elements in polymer material. We aim to take an advantage of compactness and reduced dimensions of the interferometer to implement it as the possible accessory of the commercial optical fiber splicer.

© (2005) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.
Citation

Rafal Krajewski ; Malgorzata Kujawinska ; Bart Volckaerts and Hugo Thienpont
"Low-cost microinterferometric tomography system for 3D refraction index distribution measurements in the optical fiber splices", Proc. SPIE 5855, 17th International Conference on Optical Fibre Sensors, 347 (August 30, 2005); doi:10.1117/12.623445; http://dx.doi.org/10.1117/12.623445


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