Porous fibers: a novel approach to low loss THz waveguides.
We propose a novel class of optical fiber with a porous transverse cross-section that is created by arranging sub-wavelength air-holes within the core of the fiber. These fibers can offer a combination of low transmission loss and high mode confinement in the THz regime by exploiting the enhancement of the guided mode field that occurs within these sub-wavelength holes. We evaluate the properties of these porous fibers and quantitatively compare their performance relative to that of a solid core air cladded fiber (microwire). For similar loss values, porous fibers enable improved light confinement and reduced distortion of a broadband pulse compared to microwires.
Atakaramians
Shaghik
S
Centre of Expertise in Photonics, School of Chemistry & Physics, School of Electrical & Electronic Engineering, The University of Adelaide, SA 5005 Australia. shaghik@eleceng.adelaide.edu.au
Afshar V
Shahraam
S
Fischer
Bernd M
BM
Abbott
Derek
D
Monro
Tanya M
TM
D003198:Computer Simulation; D004867:Equipment Design; D019544:Equipment Failure Analysis; D005336:Fiber Optic Technology / Q000295:instrumentation*; D007259:Infrared Rays; D008027:Light; D008872:Microwaves; D008962:Models, Theoretical; D055100:Optical Fibers; D055095:Optics and Photonics / Q000295:instrumentation*; D016062:Porosity; D012542:Scattering, Radiation