Title :
Design and characterization of compact single-section passive polarization rotator
Author :
Rahman, B.M.A. ; Obayya, S.S.A. ; Somasiri, N. ; Rajarajan, M. ; Grattan, K.T.V. ; El-Mikathi, H.A.
Author_Institution :
Dept. of Electr. Electron. & Inf. Eng., City Univ., London, UK
fDate :
4/1/2001 12:00:00 AM
Abstract :
In this paper an improved design for a short and low-loss polarization rotator is proposed, consisting of a single-section asymmetrical waveguide butt-coupled between two standard rib waveguides. At a wavelength of 1.55 μm, nearly 100% polarization conversion ratio is obtained, with a relatively short (320 μm) device length and an extremely low 0.5 dB total insertion loss. The simulation results are obtained using the full vectorial finite-element-based beam propagation, the junction analysis, and the modal solution approaches
Keywords :
finite element analysis; optical design techniques; optical losses; optical polarisers; optical rotation; optical waveguide theory; optical waveguides; rib waveguides; symmetry; 0.5 dB; 1.55 mum; 100% polarization conversion ratio; 320 mum; butt-coupled; compact single-section passive polarization rotator; device length; full vectorial finite-element-based beam propagation; junction analysis; modal solution; short low-loss polarization rotator; single-section asymmetrical waveguide; standard rib waveguides; total insertion loss; Insertion loss; Optical beams; Optical crosstalk; Optical devices; Optical losses; Optical mixing; Optical polarization; Optical propagation; Optical receivers; Optical waveguides;
Journal_Title :
Lightwave Technology, Journal of
