Polarization Maintaining Air-Core Bandgap Fibers for Terahertz Wave Guiding

A polarization-maintaining air-core bandgap polymer fiber is proposed for low-loss terahertz (THz) wave guiding. The polarized guided modes are confined in an asymmetric core by a bandgap of periodic arrangement of square holes with round corners in the cladding. The guiding properties, including tr...

Full description

Saved in:
Bibliographic Details
Published in:IEEE journal of quantum electronics 2009-05, Vol.45 (5), p.506-513
Main Authors: Ren, Guobin, Gong, Yandong, Shum, Ping, Yu, Xia, Hu, Juanjuan
Format: Article
Language:English
Subjects:
Absorbent polymers
Absorption
Asymmetry
Bandgap
Birefringence
Computer simulation
Corners
Crystalline materials
Exact sciences and technology
Fiber optics
Fibers
Frequency
Fundamental areas of phenomenology (including applications)
Mathematical models
microstructured fiber
Optical elements, devices, and systems
Optical fiber polarization
Optical losses
Optical waveguides
Optical waveguides and coupleurs
Optics
Photonic band gap
Photonic crystal fibers
Physics
polarization maintaining
polymer
Polymers
Propagation, scattering and losses. Solitons
Quantum electronics
terahertz (THz)
Wave optics
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:A polarization-maintaining air-core bandgap polymer fiber is proposed for low-loss terahertz (THz) wave guiding. The polarized guided modes are confined in an asymmetric core by a bandgap of periodic arrangement of square holes with round corners in the cladding. The guiding properties, including transmission bandwidth, numerical aperture, phase-index birefringence, modal absorption loss, and bend loss, are systematically investigated. The influence of background polymers on guiding properties is demonstrated in detail. Numerical simulations reveal that, while maintaining a relatively high phase-index birefringence (of the order of 10 -3 ), the THz fiber shows a significant suppression of absorption loss of the background polymers (by a factor of more than 25) due to the bandgap effect that repels the modal power from the absorbent polymers. The proposed THz fiber has potential for guiding intense THz waves for polarization-sensitive applications.
ISSN:0018-9197
1558-1713
DOI:10.1109/JQE.2009.2013099