Mid-infrared supercontinuum and optical frequency comb generations in a multimode tellurite photonic crystal fiber  

作　　者：Xu Han Ying Han Chao Mei Jing-Zhao Guan Yan Wang Lin Gong Jin-Hui Yuan a Chong-Xiu Yu 韩旭;韩颖;梅超;管景昭;王彦;龚琳;苑金辉;余重秀(Key Laboratory for Special Fiber and Fiber Sensor of Hebei Province,School of Information Science and Engineering,Yanshan University,Qinhuangdao 066004,China;State Key Laboratory of Information Photonics and Optical Communications,Beijing University of Posts and Telecommunications(BUPT),Beijing 100876,China)

机构地区：[1]Key Laboratory for Special Fiber and Fiber Sensor of Hebei Province,School of Information Science and Engineering,Yanshan University,Qinhuangdao 066004,China [2]State Key Laboratory of Information Photonics and Optical Communications,Beijing University of Posts and Telecommunications(BUPT),Beijing 100876,China

出　　处：《Chinese Physics B》2021年第9期248-258,共11页中国物理B（英文版）

基　　金：Project supported by the National Natural Science Foundation of China(Grant Nos.12074331,61875238,and 61971373);the Natural Science Foundation of Hebei Province,China(Grant Nos.F2021203002,F2019203549,and F2020203050);the Science and Technology Support Projects of Research and Development Plans of Qinhuangdao City(Grant No.202004A001).

摘　　要：We numerically investigate the mid-infrared(MIR)supercontinuum(SC)and SC-based optical frequency comb(OFC)generations when the three optical modes(LP_(01),LP_(02),and LP_(12))are considered in a multimode tellurite photonic crystal fiber(MM-TPCF).The geometrical parameters of the MM-TPCF are optimized to support the multimode propagation and obtain the desired dispersion characteristics of the considered three optical modes.When the pump pulse with center wavelengthλ=2.5μm,width T=80 fs,and peak power P=18 kW is coupled into the anomalous dispersion region of the LP_(01),LP_(02),and LP_(12)modes of the MM-TPCF,the-40-dB bandwidth of the generated MIR SCs can be up to 2.56,1.39,and 1.12 octaves,respectively,along with good coherence.Moreover,the nonlinear dynamics of the generated SCs are analyzed.Finally,the MIR SCs-based OFCs are demonstrated when a train of 50 pulses at 1-GHz repetition rate is used as the pump source and launched into the MM-TPCF.

关 键 词：multimode tellurite photonic crystal fiber SUPERCONTINUUM optical frequency comb mid-infrared spectral region 

分 类 号：TN253[电子电信—物理电子学]