Open AccessNonlinear light mode dispersion and nonuniform mode comb by a Fabry-Perot with chirped fiber gratings
Author(s) -
Alexander Bekker,
Boris Levit,
Rafi Weill,
Baruch Fischer
Publication year - 2020
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.374383
Subject(s) - optics , chirp , fiber bragg grating , dispersion (optics) , dispersion shifted fiber , single mode optical fiber , materials science , mode volume , frequency comb , fabry–pérot interferometer , self phase modulation , wavelength , physics , optical fiber , nonlinear optics , fiber optic sensor , laser
We demonstrate a nonlinear light mode dispersion and a nonuniform frequency mode comb by a chirped fiber Bragg gratings (CFBG) Fabry-Perot (FP) at the 1550 nm wavelength regime. We give analytical expressions for the general chirp case, and an experimental demonstration with a linear chirp, showing a square-root dependence of the dispersion as a function of the FP mode number. Such sublinear dispersion is required, for example, for photon Bose-Einstein condensation (BEC) in a one-dimensional (1D) system like fiber cavities.