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Microwave circuit modeling for semiconductor lasers under large and small signal conditions
Author(s) -
Elkadi H.,
Vilcot J. P.,
Maricot S.,
Decoster D.
Publication year - 1990
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.4650031102
Subject(s) - equivalent circuit , semiconductor laser theory , spice , laser , nonlinear system , microwave , electronic engineering , rate equation , diode , signal (programming language) , laser diode rate equations , large signal model , semiconductor device , laser diode , electronic circuit simulation , polynomial , electronic circuit , network analysis , semiconductor , computer science , physics , optoelectronics , optics , materials science , electrical engineering , engineering , mathematics , mathematical analysis , telecommunications , voltage , injection seeder , kinetics , composite material , layer (electronics) , quantum mechanics , programming language
We present a new large/small signal equivalent circuit for semiconductor lasers, valid for above‐ as well as below‐threshold operating conditions, based on the monomode rate equations and a polynomial approximation of Fermi integral. The model is thus valid for conditions of large injection. Results obtained by this model match perfectly those obtained by numerical integration of the rate equations. The equivalent circuit is easy to implement and solve on a nonlinear circuit analysis software such as SPICE and consequently allows the study of the parasitic effects as well as the laser behavior in complex circuits. Comparison between this model and previously published models is presented. The model is applied to the study of various heterojunction laser diodes, the experimental results of which have been published elsewhere.