PT phase control in circular multi-core fibers

被引：27

作者：

Longhi, Stefano ^{[1
,2
]}

机构：

[1] Politecn Milan, Dipartimento Fis, Piazza L da Vinci 32, I-20133 Milan, Italy

[2] CNR, Ist Foton & Nanotecnol, Piazza L da Vinci 32, I-20133 Milan, Italy

来源：

OPTICS LETTERS | 2016年 / 41卷 / 09期

关键词：

PARITY-TIME SYMMETRY;

D O I：

10.1364/OL.41.001897

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We consider light dynamics in a circular multi-core fiber with balanced gain and loss core distribution, and show that transition from unbroken to broken PT phases can be conveniently controlled by geometric twist of the fiber. The twist introduces Peierls phases in the coupling constants and, thus, acts as an artificial gauge field. As an application, we discuss twist-induced tuning of optical transmission in a six-core fiber with one lossy core. (C) 2016 Optical Society of America

引用

页码：1897 / 1900

页数：4

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