Title :
Efficient Time Domain Modeling of Rib Waveguide RF Modulators
Author :
Vukovic, Ana ; Bekker, Ella V. ; Sewell, Phillip ; Benson, Trevor M.
Author_Institution :
Sch. of Electr. & Electron. Eng., Nottingham Univ.
Abstract :
This paper presents an efficient and physically consistent method for modeling lumped electroabsorption (EA) RF modulators. The method extends the original spectral index (SI) waveguide simulation method to the time domain in order to model the time-varying phenomena occurring in the multiple-quantum wells of these modulators. The accuracy of the methodology is first verified on the simpler cases of time-varying homogeneous media and time-varying slab waveguides. The time domain SI method is then used to model pulse generation and chirp phenomena in lumped EA modulators operating at both 10 and 40 GHz producing predictions in good agreement with previously published experimental values
Keywords :
chirp modulation; electro-optical modulation; electroabsorption; optical pulse generation; optical waveguide theory; rib waveguides; 10 GHz; 40 GHz; chirp phenomena; electroabsorption RF modulators; homogeneous media; pulse generation; rib waveguide; slab waveguides; spectral index; Chirp modulation; Fiber nonlinear optics; Nonlinear optics; Optical modulation; Optical pulse generation; Optical refraction; Optical variables control; Optical waveguides; Pulse modulation; Radio frequency; Chirp; electroabsorption (EA) modulators; pulse generation; time-varying media;
Journal_Title :
Lightwave Technology, Journal of
DOI :
10.1109/JLT.2006.884974
