Title :
Elliptical Hollow Fiber With Inner Silver Coating for Linearly Polarized Terahertz Transmission
Author :
Xiaoli Tang ; Yi Jiang ; Bangshan Sun ; Jian Chen ; Xiaosong Zhu ; Peng Zhou ; Dongping Wu ; Yiwei Shi
Author_Institution :
Sch. of Inf. Sci. & Eng., Fudan Univ., Shanghai, China
Abstract :
Silver-coated elliptical hollow polycarbonate fibers for transmission of linearly polarized terahertz (THz) radiation are fabricated and characterized. A polarization ratio of 90% and a transmission loss of 0.79 dB/m at 0.65 THz are obtained for a 290-mm long fiber with major and minor inner radii of 2.42 and 1.18 mm. Modal birefringence in the order of 10-3-10-2 is predicted in the frequency region of 0.3-1.5 THz. We also investigate the transmission characteristics of deformed fibers and found that the fiber with a semicircle cross section could rotate the direction of a linear polarization.
Keywords :
birefringence; microwave photonics; optical fibre fabrication; optical fibre losses; optical fibre polarisation; optical fibre testing; optical polymers; polymer fibres; silver; Ag; deformed fibers; frequency 0.3 THz to 1.5 THz; linear polarization; linearly polarized terahertz radiation transmission; modal birefringence; radius 1.18 mm; radius 2.42 mm; semicircle cross section; silver-coated elliptical hollow polycarbonate fibers; size 290 mm; transmission characteristics; transmission loss; Couplings; Dielectrics; Loss measurement; Optical fiber polarization; Optical fiber theory; Propagation losses; Silver; Hollow fibers; polarization; terahertz waveguides; transmission loss;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2013.2238525
