Silica-core photonic bandgap fibres: Properties and a criterion for single-mode operation

被引:1
|
作者
Egorova, O. N. [1 ]
Semjonov, S. L. [1 ]
Salganskii, M. Yu. [2 ]
Khopin, V. F. [2 ]
Gur'yanov, A. N. [2 ]
机构
[1] Russian Acad Sci, Fiber Opt Res Ctr, Moscow 119333, Russia
[2] Russian Acad Sci, GG Devyatykh Inst Chem High Pur Subst, Nizhnii Novgorod 603950, Russia
基金
俄罗斯基础研究基金会;
关键词
photonic bandgap fibres; large mode field diameter fibres;
D O I
10.1070/QE2012v042n02ABEH014736
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
We have studied the properties of silica-core photonic bandgap fibres with a small diameter to pitch ratio (no greater than 0.4) of high-index rods and small refractive-index difference (no greater than 0.03) in the cladding. Theoretical analysis and experimental data demonstrate that the number of core modes depends only on the number of pure-silica elements that form the core and is independent of cladding parameters. If there is one such element, only one dispersion curve of a core mode falls in the fundamental bandgap and the fibre is single-mode. The fibres having seven such elements are multimode.
引用
收藏
页码:165 / 169
页数:5
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