Title :
Transverse-Magnetic BPM Analysis of a Step-Index Slab Waveguide Expressed by a Sigmoid Function
Author :
Yamauchi, Junji ; Shimada, Naoya ; Nito, Yuta ; Nakano, Hisamatsu
Author_Institution :
Fac. of Eng., Hosei Univ., Koganei
Abstract :
Power conserving property of the propagating transverse-magnetic wave in a strongly guiding waveguide is demonstrated using the beam-propagation method with a transformed field. A step-index profile is expressed by a sigmoid function. A tilted, asymmetrical waveguide and a Y-branching waveguide with high index contrast are analyzed and discussed.
Keywords :
laser beams; light propagation; optical waveguides; Sigmoid function; Y-branching waveguide; beam-propagation method; step-index slab waveguide; strongly guiding waveguide; tilted asymmetrical waveguide; transverse-magnetic BPM analysis; transverse-magnetic wave propagation; Beam-propagation method (BPM); high index contrast; optical waveguides;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2008.2008728
