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Proceedings Paper

Hybrid Mach-Zehnder interferometer manufactured by femtosecond laser multiscan technique
Author(s): P. Roldán Varona; D. Pallarés-Aldeiturriaga; L. Rodríguez-Cobo; J. M. López-Higuera
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Paper Abstract

In this paper, a 6 mm hybrid Mach-Zehnder Interferometer (MZI) has been manufactured within a standard optical fiber using multiscan inscription with femtosecond laser. This technique allows the employ of cladding waveguides (CWG) as sensing arms for the interferometer. Refracted Near Field (RNF) profilometry and Quantitative Phase Microscopy (QPM) consistently suggest that CWG exhibit a smooth Type I refractive index change (RIC) that increases with the number of scans. This makes the scan number a potential way to control the coupling and Free Spectral Range (FSR) of the manufactured MZI. Its combination with a fiber Bragg grating (FBG) inscribed in the core makes possible to discriminate between different parameters.

Paper Details

Date Published: 28 August 2019
PDF: 4 pages
Proc. SPIE 11199, Seventh European Workshop on Optical Fibre Sensors, 111992N (28 August 2019); doi: 10.1117/12.2538813
Show Author Affiliations
P. Roldán Varona, Univ. de Cantabria (Spain)
D. Pallarés-Aldeiturriaga, Univ. de Cantabria (Spain)
CIBER-bbn, Instituto de Salud Carlos III (Spain)
L. Rodríguez-Cobo, CIBER-bbn, Instituto de Salud Carlos III (Spain)
J. M. López-Higuera, Univ. de Cantabria (Spain)
CIBER-bbn, Instituto de Salud Carlos III (Spain)
Instituto de Investigación Sanitaria Valdecilla (IDIVAL) (Spain)

Published in SPIE Proceedings Vol. 11199:
Seventh European Workshop on Optical Fibre Sensors
Kyriacos Kalli; Sinead O. O'Keeffe; Gilberto Brambilla, Editor(s)

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