All-in-fiber multiscan Mach-Zehnder interferometer assisted by core FBG for simultaneous multi-parameter sensing

Abstract: Impact of position and tooth thickness errors on planetary transmission under different meshing phase In this work, a hybrid cladding waveguide (CWG) Mach-Zehnder interferometer (MZI) sensor inscribed by femtosecond laser is demonstrated. The CWG has been inscribed using adaptive optics and multiscan technique. It has been discovered that these waveguides exhibit a phase change dependent of the number of scans performed, allowing free spectral range (FSR) control. Temperature characterization reveals a refractive index change (RIC) proportional and lower than previously reported CWG MZIs, indicating a lower degradation with high temperatures. The CWG proximity to the cladding/air boundary allows good refractive index (RI) sensitivity. Thanks to the FBG inscribed in the reference arm with the point-by-point (PbP) technique, the interferometer can measure curvature and strain simultaneously without being affected by cross-sensitivity.

 Autoría: Roldán-Varona P., Pallarés-Aldeiturriaga D., Rodríguez-Cobo L., López-Higuera J.M.,

 Fuente: Optics and Laser Technology, 2020, 132, 106459

Editorial: Elsevier

 Fecha de publicación: 01/12/2020

Nº de páginas: 18

Tipo de publicación: Artículo de Revista

DOI: 10.1016/j.optlastec.2020.106459

ISSN: 0030-3992

Proyecto español: TEC2016-76021-C2-2-R

Url de la publicación: https://doi.org/10.1016/j.optlastec.2020.106459