Open AccessSquare dielectric THz waveguides
Author(s) -
Nafiseh Aflakian,
Nan Yang,
Tim LaFave,
Rashaunda Henderson,
Duncan L. MacFarlane
Publication year - 2016
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.24.014951
Subject(s) - optics , cladding (metalworking) , materials science , terahertz radiation , radiation mode , dielectric , square (algebra) , finite difference time domain method , waveguide , single mode optical fiber , optical fiber , optoelectronics , physics , geometry , mathematics , metallurgy
A holey cladding dielectric waveguide with square cross section is designed, simulated, fabricated and characterized. The TOPAS waveguide is designed to be single mode across the broad frequency range of 180 GHz to 360 GHz as shown by finite-difference time domain simulation and to robustly support simultaneous TE and TM mode propagation. The square fiber geometry is realized by pulling through a heat distribution made square by appropriate furnace design. The transmitted mode profile is imaged using a vector network analyzer with a pinhole at the receiver module. Good agreement between the measured mode distribution and the calculated mode distribution is demonstrated.