Title :
Selective excitation of the TE/sub 01/ mode in hollow-glass waveguide using a subwavelength grating
Author :
Mohammed, W.S. ; Mehta, A. ; Pitchumani, M. ; Johnson, E.G.
Author_Institution :
Coll. of Opt. & Photonics/CREOL, Univ. of Central Florida, Orlando, FL, USA
fDate :
7/1/2005 12:00:00 AM
Abstract :
In this work we demonstrate, for the first time to our knowledge, a novel subwavelength optical element for the selective excitation of the TE/sub 01/ mode inside a 300-μm bore diameter hollow-glass waveguide (HGW) in order to reduce the transmission loss. The device consists of form birefringent gratings, where each section is oriented in a different direction so as to convert a linearly polarized input light to a rotating polarized one matching the TE/sub 01/ mode. Using this polarization converting element, we measured a 1.65-dB decrease in the transmission loss in the HGW at a wavelength of 1.55 μm.
Keywords :
diffraction gratings; optical fibre losses; optical fibre polarisation; optical glass; optical rotation; optical waveguides; photoexcitation; 1.55 mum; 1.65 dB; 300 mum; SiO/sub 2/; TE/sub 01/ mode; birefringent gratings; hollow-glass waveguide; linearly polarized light; polarization converting element; rotating polarized light; selective excitation; subwavelength grating; subwavelength optical element; transmission loss; Birefringence; Boring; Gratings; Loss measurement; Optical losses; Optical polarization; Optical waveguides; Propagation losses; Tellurium; Wavelength conversion; Circular waveguides; gratings; multimode waveguides; optical fiber coupling; optical fiber polarization;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2005.848549
