Open AccessEffective length of short Fabry-Perot cavity formed by uniform fiber Bragg gratings
Author(s) -
Yuri O. Barmenkov,
Dobryna Zalvidea,
Salvador Torres-Peiró,
J.L. Cruz,
Miguel V. Andrés
Publication year - 2006
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.14.006394
Subject(s) - fiber bragg grating , optics , fabry–pérot interferometer , materials science , phosfos , long period fiber grating , grating , blazed grating , diffraction grating , ultrasonic grating , coupled mode theory , fiber optic sensor , optical fiber , graded index fiber , optoelectronics , refractive index , physics , wavelength
In this paper, we describe the properties of Fabry-Perot fiber cavity formed by two fiber Bragg gratings in terms of the grating effective length. We show that the grating effective length is determined by the group delay of the grating, which depends on its diffraction efficiency and physical length. We present a simple analytical formula for calculation of the effective length of the uniform fiber Bragg grating and the frequency separation between consecutive resonances of a Fabry-Perot cavity. Experimental results on the cavity transmission spectra for different values of the gratings' reflectivity support the presented theory.