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 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.
Key Laboratory of Opto-Electronic Information Science and Technology, Ministry of Education, and Institute ofModern Optics, Nankai University, Tianjin 300071, China.
Jiangbing
J
Du
Yange
Y
Liu
Zhi
Z
Wang
Zhanyuan
Z
Liu
Bing
B
Zou
Long
L
Jin
Bo
B
Liu
Guiyun
G
Kai
Xiaoyi
X
Dong
D017076:Computer-Aided Design; D004867:Equipment Design; D019544:Equipment Failure Analysis; D005336:Fiber Optic Technology / Q000295:instrumentation*; D044085:Microfluidics / Q000295:instrumentation*; D017785:Photons; D012996:Solutions; D013696:Temperature
D012996:Solutions