Title :
Numerical study of polarisation-selective side-illuminated pin photodetectors grown on InP substrate for hybridisation on silicon platform
Author :
Magnin, V. ; Harari, J. ; Decoster, D.
Author_Institution :
Inst. d´´Electronique de Microelectronique et de Nanotechnologie, UMR CNRS, Villeneuve d´´Ascq, France
fDate :
6/28/2004 12:00:00 AM
Abstract :
A monolithic polarisation-selective side-illuminated pin photodetector is described using the coupling properties of symmetric and asymmetric slab optical waveguides. First, a basic structure is proposed, analysed and optimised by modal analysis, leading to a computed polarisation ratio of 15.7 dB. Then the symmetric waveguide is replaced by a multimode diluted waveguide optimised by a genetic algorithm coupled to a beam propagation method. This significantly improves the performance of the device and particularly the computed polarisation ratio, which reaches 21 dB. This InP-based photodetector is suitable for hybridisation on a silicon platform and is compatible with 10 Gbit/s operation.
Keywords :
genetic algorithms; integrated optics; optical communication equipment; optical design techniques; optical waveguide theory; p-i-n photodiodes; photodetectors; silicon; symmetry; 10 Gbit/s; InP; InP substrate; asymmetric slab optical waveguides; beam propagation method; computed polarisation ratio; coupling properties; genetic algorithm; modal analysis; monolithic polarisation-selective side-illuminated pin photodetector; optical communication systems; polarisation-selective side-illuminated pin photodetectors; silicon platform hybridisation; symmetric slab optical waveguides; symmetric waveguide;
Journal_Title :
Optoelectronics, IEE Proceedings -
DOI :
10.1049/ip-opt:20040389
