Thermally tunable dual-core photonic bandgap fiber based on the infusion of a temperature-responsive liquid

A dual-core photonic bandgap fiber (PBGF) is demonstrated by infusing a high-index liquid into a dual-core air-silica photonic crystal fiber (PCF). Extremal couplings have been experimentally observed. The temperature tunable characteristics of the dual-core PBGF's bandgap guiding and dual-core...

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Bibliographic Details
Published in:Optics express 2008-03, Vol.16 (6), p.4263-4269
Main Authors: Du, Jiangbing, Liu, Yange, Wang, Zhi, Liu, Zhanyuan, Zou, Bing, Jin, Long, Liu, Bo, Kai, Guiyun, Dong, Xiaoyi
Format: Article
Language:English
Subjects:
Computer-Aided Design
Equipment Design
Equipment Failure Analysis
Fiber Optic Technology - instrumentation
Microfluidics - instrumentation
Photons
Solutions
Temperature
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Summary:A dual-core photonic bandgap fiber (PBGF) is demonstrated by infusing a high-index liquid into a dual-core air-silica photonic crystal fiber (PCF). Extremal couplings have been experimentally observed. The temperature tunable characteristics of the dual-core PBGF's bandgap guiding and dual-core coupling are experimentally and numerically investigated. When we rise temperature, the dual-core PBGFs' bandgaps have been changed: compression of bandwidth, blue-shift and depression of the guiding band. Especially, the dual-core coupling is temperature tunable because of the tunability of the infusion liquid's index. We find that the rise of temperature increases the coupling length which results in the blue-shift of the resonant peak wavelengths with a speed of 1.9nm/degreesC, for a 20mm dual-core PBGF.
ISSN:1094-4087
1094-4087
DOI:10.1364/oe.16.004263