Open AccessModulation of coaxial modal interferometers based on long period gratings in double cladding fibers
Author(s) -
D. Sáez-Rodríguez,
J.L. Cruz,
A. Dı́ez,
Miguel V. Andrés
Publication year - 2007
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.15.010929
Subject(s) - optics , cladding (metalworking) , astronomical interferometer , materials science , coaxial , cladding mode , interferometry , modulation (music) , bandwidth (computing) , diffraction grating , optical fiber , optoelectronics , grating , physics , fiber optic sensor , polarization maintaining optical fiber , acoustics , telecommunications , computer science , metallurgy
This paper reports on the dynamic modulation of coaxial interferometers based on two cascaded long period gratings written in double cladding fibers. The interferometer is modulated by a piezoelectric ceramic which stretches one the gratings at tens of kHz, the output light is intensity modulated with an efficiency of 97 %. The device operates at 1530nm, has more than 50nm bandwidth, insertion loss of 0.4 dB and a temperature drift of 0.11 nm/ degrees C.