Spectral self-imaging of time-periodic coherent frequency combs by parabolic cross-phase modulation

作     者：Maram, Reza Azana, Jose 

作者机构：Inst Natl Rech Sci INRS Energie Mat & Telecommun Montreal PQ H5A 1K6 Canada 

出 版 物：《OPTICS EXPRESS》 (Opt. Express)

年 卷 期：2013年第21卷第23期

页      面：28824-28835页

核心收录：

学科分类：070207[理学-光学] 07[理学] 08[工学] 0803[工学-光学工程] 0702[理学-物理学] 

基　　金：Natural Sciences and Engineering Research Council of Canada (NSERC) Canada Research Chair in "Ultrafast Photonic Signal Processing" Ministere de l'Education, du Loisir et du Sport (MELS) du Quebec through the Merit Scholarship Program for Foreign Students 

主　　题：Cross phase modulation Fiber Bragg gratings Frequency combs Long period gratings Nonlinear optical signal processing Phase modulation 

摘      要：Integer and fractional spectral self-imaging effects are induced on infinite-duration periodic frequency combs (probe signal) using cross-phase modulation (XPM) with a parabolic pulse train as pump signal. Free-spectral-range tuning (fractional effects) or wavelength-shifting (integer effects) of the frequency comb can be achieved by changing the parabolic pulse peak power or/and repetition rate without affecting the spectral envelope shape and bandwidth of the original comb. For design purposes, we derive the complete family of different pump signals that allow implementing a desired spectral self-imaging process. Numerical simulation results validate our theoretical analysis. We also investigate the detrimental influence of group-delay walk-off and deviations in the nominal temporal shape or power of the pump pulses on the generated output frequency combs. (C) 2013 Optical Society of America