Expanded-core waveguides written by femtosecond laser irradiation in bulk optical glasses

CORC > 西安光学精密机械研究所 > 中国科学院西安光学精密机械研究所 > 瞬态光学技术国家重点实验室

	Expanded-core waveguides written by femtosecond laser irradiation in bulk optical glasses
	Liu, Xin 1,2; Zhang, Wenfu 1; Zhao, Wei1 ; Stoian, Razvan 3; Cheng, Guanghua1
刊名	optics express
	2014-11-17
卷号	22 期号:23 页码:28771-28782
ISSN号	1094-4087
产权排序	1
合作状况	国际
英文摘要	expanded-core structures based on layered increased index (type i) waveguiding traces are fabricated by ultrafast laser photoinscription in bulk optical glasses, with examples for fused silica and chalcogenide glasses. the expanded-core waveguides can serve for large-mode-area guiding concepts and their feasibility is experimentally investigated. a parametric study of the geometry, number of traces and index contrast indicates the possibility to design guided modes characteristics as exemplified in fused silica. a specific arrangement consisting of 8 traces of guiding layers with 6 mu m separation exhibit single-mode transport properties with mode field area of similar to 805 mu m(2). the condition of single mode operation is also discussed in the frame of the dispersion relation of light guiding in periodical dielectric structures. the supported supermode of expanded-core structures can be controlled by careful design of the refractive index change, the number of guiding layers and the thickness of the interlayers. inspection of the propagation characteristics shows equally low loss features. a y-branching splitter based on expanded-core concept conserving single mode characteristics is fabricated. the optical design is equally successfully tested in chalcogenide gallium lanthanum sulfide glass. ultrafast laser inscribed expanded-core waveguiding provides therefore an interesting path of fabricating large mode area waveguides usable in near infrared and mid-infrared region beneficial for applications requiring high power or large mode dimensions. (c) 2014 optical society of america
WOS标题词	science & technology ; physical sciences
类目[WOS]	optics
研究领域[WOS]	optics
关键词[WOS]	large-mode-area ; fused-silica ; multicore fiber ; inscription ; devices ; pulses
收录类别	SCI ; EI
语种	英语
WOS记录号	WOS:000345268500097
公开日期	2015-03-20
内容类型	期刊论文
源URL	[http://ir.opt.ac.cn/handle/181661/22430]
专题	西安光学精密机械研究所_瞬态光学技术国家重点实验室
作者单位	1.Xian Inst Opt & Precis Mech CAS, State Key Lab Transient Opt & Photon, Xian 710119, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Univ Jean Monnet, Univ Lyon, CNRS, Lab Hubert Curien,UMR 5516, F-42000 St Etienne, France
推荐引用方式 GB/T 7714	Liu, Xin,Zhang, Wenfu,Zhao, Wei,et al. Expanded-core waveguides written by femtosecond laser irradiation in bulk optical glasses[J]. optics express,2014,22(23):28771-28782.
APA	Liu, Xin,Zhang, Wenfu,Zhao, Wei,Stoian, Razvan,&Cheng, Guanghua.(2014).Expanded-core waveguides written by femtosecond laser irradiation in bulk optical glasses.optics express,22(23),28771-28782.
MLA	Liu, Xin,et al."Expanded-core waveguides written by femtosecond laser irradiation in bulk optical glasses".optics express 22.23(2014):28771-28782.