Open AccessLong period grating in a multimode cyclic transparent optical polymer fiber inscribed using a femtosecond laser
Author(s) -
Antreas Theodosiou,
Rui Min,
Arnaldo LealJunior,
Andreas Ioannou,
Anselmo Frizera,
Carlos Marques,
Kyriacos Kalli
Publication year - 2019
Publication title -
optics letters/optics index
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.524
H-Index - 272
eISSN - 1071-2763
pISSN - 0146-9592
DOI - 10.1364/ol.44.005346
Subject(s) - materials science , optics , multi mode optical fiber , femtosecond , inscribed figure , fiber bragg grating , laser , core (optical fiber) , optical fiber , fiber laser , fiber , optoelectronics , composite material , physics , geometry , mathematics
In this Letter, we report, to the best of our knowledge, the first inscription of long period gratings (LPGs) in a multimode cyclic transparent optical polymer (CYTOP) fiber using a femtosecond laser inscription method. The LPG was inscribed directly in the center of the fiber core, tailored for operation at 1560 nm. The CYTOP-LPG was characterized in transmission, and its response for relative humidity and temperature was measured. The humidity measurements, to the best our knowledge, are the first for a POF-LPG, whereas the temperature sensitivity is significantly higher than reported in other works. In addition, dynamic mechanical measurements were performed comparing the mechanical characteristics of the laser exposed sections of the polymer fiber, where the LPG was inscribed, with the unexposed regions.