Title :
A new computer model for electroabsorption in multiple quantum-well optical modulator
Author :
Sheikhi, M.H. ; Emamghoreishi, S.A. ; Javadpoor, S. ; Moravvej-Farshi, M.K.
Author_Institution :
Dept. of Electr. Eng., Shiraz Univ., Iran
Abstract :
We present a simple model of the optical absorption spectrum of multiple quantum well material in an electric field which is suitable for calculation on microcomputers and will be used to optimize the performance of multiple quantum well (MQV) electroabsorption modulator. A tunneling resonance technique is used to evaluate the energies of subbands in the material and the electron-hole overlap integral. The computer generated spectra have been compared with absorption spectra derived from photocurrent measurement on a high quality GaAs/AlGaAs p-i-n diode. The comparison shows that the model has good accuracy and can be used as a fast design tools for electroabsorption modulator. The model can estimate quantum confined stark effect (QCSE) and shift of excitonic peak in absorption spectra.
Keywords :
Stark effect; digital simulation; electroabsorption; modulators; numerical analysis; optical modulation; physics computing; quantum wells; recursive filters; resonant tunnelling; MQV electroabsorption modulator; QCSE; computer generated spectra; design tools; electric field; electroabsorption computer model; electron-hole overlap integral; excitonic peak; microcomputers; multiple quantum well material; multiple quantum-well optical modulator; optical absorption spectrum; p-i-n diode; photocurrent measurement; quantum confined stark effect; tunneling resonance technique; Absorption; Microcomputers; Optical computing; Optical materials; Optical modulation; Photoconductivity; Quantum computing; Quantum well devices; Resonance; Tunneling;
Conference_Titel :
EUROCON 2003. Computer as a Tool. The IEEE Region 8
Print_ISBN :
0-7803-7763-X
DOI :
10.1109/EURCON.2003.1248064
