Title :
Rigorous beam propagation analysis of tapered spot-size converters in deep-etched semiconductor waveguides
Author :
Rahman, B.M.A. ; Boonthittanont, W. ; Obayya, S.S.A. ; Wongcharoen, T. ; Ladele, E.O. ; Grattan, K.T.V.
Author_Institution :
Sch. of Eng. & Math. Sci., City Univ. London, UK
Abstract :
A rigorous study of a tapered spot-size converter in a deep-etched GaAs/AlGaAs optical modulator is reported through the use of full vectorial approaches. Mode beating in the tapered section, the expansion of the spot-size, and the consequent enhancement of the coupling to an optical fiber are also reported.
Keywords :
aluminium compounds; coupled mode analysis; finite element analysis; gallium arsenide; integrated optoelectronics; laser modes; optical design techniques; optical fibre couplers; optical modulation; optical waveguides; GaAs-AlGaAs; GaAs/AlGaAs optical modulator; beam propagation analysis; deep-etching; mode beating; optical fiber coupling; semiconductor waveguides; tapered spot-size converters; vectorial approach; Gallium arsenide; High speed optical techniques; Optical design; Optical devices; Optical modulation; Optical sensors; Optical waveguides; Semiconductor optical amplifiers; Semiconductor waveguides; Stimulated emission;
Journal_Title :
Lightwave Technology, Journal of
DOI :
10.1109/JLT.2003.821753
