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Article title DEVELOPMENT OF NUMERICAL MODELS AND SIMULATION METHODS DESIGNED FOR THE INVESTIGATION OF HIGH-SPEED PHOTODETECTORS FOR INTEGRATED OPTICAL COMMUTATION SYSTEMS
Authors I.V. Pisarenko
Section SECTION IV. MODELING AND DESIGN
Month, Year 10, 2016 @en
Index UDC 621.383.52
DOI 10.18522/2311-3103-2016-10-122128
Abstract In this paper, we discuss the problem of research and development of models and methods designed for the simulation of optoelectronic components for optical interconnections of integrated circuits. The prospective concept of the implementation of multi-core ultra-large-scale optical integrated circuits with silicon digital cores and AIIIBV inter-core integrated optical commutation systems is under consideration. High-speed semiconductor photodetectors designed for the opera-tion as parts of integrated inter-core optical interconnections together with the lasers-modulators are the objects of this research. The aforementioned lasers-modulators can generate optical signals with terahertz modulation frequencies. This paper is aimed at the development of models and modelling aids allowing simulating the transients which take place in structures of photosensitive devices during the detection of subpicosecond laser pulses. We have applied the proposed numerical models, technique of drift-diffusion simulation, and software for the research of the performance of GaAs p-i-n structures and Schottky-barrier photodiodes. The scientific novelty of this paper is determined by the development of the effective technique of drift-diffusion numerical simulation based on the application of upwind and explicit difference schemes, Gummel iteration method, and different variable bases. The consumption of computational and time resources necessary for the implementation of the proposed technique is three times less than it is required for its analogs. We have developed the applied software in GNU Octave program using the MATLAB programming language for the implementation of the aforementioned models and methods. This software allows studying the p-i-n and Schottky-barrier photodiodes with different electrophysical, constructive and technological parameters.

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Keywords Integrated optical commutation systems; high-speed photodetectors; numerical simulation; drift-diffusion models.
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