Title :
Generation of ultrashort electrical pulses in semiconductor waveguides
Author :
Loyo-Maldonado, V. ; Aitchison, J.S. ; Rogers, E.S. ; Venugopal Rao, S. ; Moutzouris, K. ; Ebrahimzadeh, M.
Author_Institution :
Dept. of Electron. & Electr. Eng., Glasgow Univ., UK
Abstract :
Summary form only given. Describes the results obtained from a device designed to generate an electrical signal using optical rectification at an input wavelength in the 1.55 /spl mu/m telecommunications window. The optical rectification effect (ORE) device consists of a ridge optical waveguide with a coplanar transmission line (CPW) deposited on top. The central conductor of the CPW line is carefully aligned on top of the ridge with the ground electrodes in close proximity in order to maximize the overlap between the optical and the microwave mode. The ground electrodes of the CPW line are periodically loaded to create a travelling wave device where the phase velocity of the electrical signal is matched to the group velocity of the optical signal.
Keywords :
coplanar transmission lines; high-speed techniques; microwave photonics; optical waveguides; pulse generators; rectification; ridge waveguides; semiconductor devices; 1.55 /spl mu/m telecommunications window; 1.55 micron; central conductor; coplanar transmission line; ground electrodes; group velocity; microwave mode; optical rectification; phase velocity; ridge optical waveguide; semiconductor waveguides; travelling wave device; ultrashort electrical pulse generation; Coplanar waveguides; Electrodes; Nonlinear optics; Optical design; Optical devices; Optical pulse generation; Optical waveguides; Pulse generation; Semiconductor waveguides; Signal design;
Conference_Titel :
Lasers and Electro-Optics, 2002. CLEO '02. Technical Digest. Summaries of Papers Presented at the
Conference_Location :
Long Beach, CA, USA
Print_ISBN :
1-55752-706-7
DOI :
10.1109/CLEO.2002.1033917
