Title :
A Slot Micro/Nano Fiber With Elliptical Low-Index Core
Author :
Zhang, Wenfu ; Mu, Jian-Wei ; Huang, Wei-Ping ; Zhao, Wei
Author_Institution :
State Key Lab. of Transient Opt. & Photonics, Xi´´an Inst. of Opt. & Precision Mech., Xi´´an, China
Abstract :
A slot micro/nano optical fiber with elliptical low-index core, referred to as the elliptical-slot micro/nano fiber (ESMNF), is studied systematically in great detail in this paper. It is demonstrated that the ESMNF can confine most of the light in the low-index region and hence lead to large field enhancement. Benefiting from the large low-index power confinement factor and the field enhancement, the ESMNF also yields significant nonlinearity enhancement by the proper selection of materials. In addition, large birefringence between the two fundamental polarized modes is observed, due to the breakage of the circular symmetry for the core. The nonlinearity and low-index confinement properties of a more practical elliptical-slot embedded suspended microstructure fiber are also studied.
Keywords :
birefringence; micro-optics; nanofibres; nanophotonics; nonlinear optics; optical fibre polarisation; refractive index; ESMNF; birefringence; core circular symmetry; elliptical low-index core; field enhancement; fundamental polarized modes; microstructure fiber; power confinement factor; slot microfiber; slot nanofiber; Indexes; Materials; Optical fibers; Optical refraction; Optical variables control; Refractive index; Fiber optics; fiber design and fabrication; fibers; nonlinear optics;
Journal_Title :
Photonics Journal, IEEE
DOI :
10.1109/JPHOT.2012.2212241
