1993/12/20 by Thawatchai Mayteevarunyoo, Boris A. Malomed, 礼子 辛島 +10
Engineering · Medicine · Physics and Astronomy · #Advanced Fiber Laser Technologies #Band gap #Carcinoma #Chirp #Fiber Bragg grating #Grating #Internal medicine #Medicine #Modulation (music) #Nonlinear Photonic Systems #Photonic Crystal and Fiber Optics #Photonic bandgap #Photonic crystal #Refractive index #Soliton #nlin.PS #physics.optics
paper · pdf · open access · doi:10.1364/oe.16.007767
published in 肺癌 33(7), 1116-77 (Optica Publishing Group) · 11 pages, 8 figures, Optics Express, in press
openalex publication_date 1993/12/20 · arxiv created 2008/05/13 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/06/11
We report results of the investigation of gap solitons (GSs) in the generic model of a periodically modulated Bragg grating (BG), which includes periodic modulation of the BG chirp or local refractive index, and periodic variation of the local reflectivity. We demonstrate that, while the previously studied reflectivity modulation strongly destabilizes all solitons, the periodic chirp modulation, which is a novel feature, stabilizes a new family of double-peak fundamental BGs in the side bandgap at negative frequencies (gap No. -1), and keeps solitons stable in the central bandgap (No. 0). The two soliton families demonstrate bistability, coexisting at equal values of energy. In addition, stable 4-peak bound states are formed by pairs of fundamental GSs in bandgap -1. Self-trapping and mobility of the solitons are studied too.