Dr. Sergei F. Mingaleev
Recent papers
Sci. Rep. 6, 20599 (Feb 2016)
Proc. of ICTON, Th.A1.6 (Jul 2015)
SPIE Newsroom (Jun 2015)
Proc. of SPIE 9516, 951602 (May 2015)
Head of Integrated Photonics Department

VPI Development Center
        a division of VPIphotonics & Sam Solutions
        a resident of Belarus Hi-Tech Park

Filimonova street 15, Office 511,
220037 Minsk, Belarus


Current Work:

VPIcomponentMaker™ Photonic Circuits is a simulation and design environment for modeling photonic integrated circuits (PICs). It provides advanced device libraries integrated with scalable bidirectional time-and-frequency-domain simulation framework enabling fast and accurate modeling of large-scale PICs with a mix of photonic, electrical and optoelectronic devices.

VPItoolkit™ PDK HHI is a pluggable toolkit to VPIcomponentMaker Photonic Circuits which supports InP photonics Process Design Kit (PDK) for Multi Project Wafer (MPW) runs offered by the Fraunhofer Heinrich Herz Institut (HHI) foundry.

VPImodeDesigner™ is a versatile simulation framework for the analysis and optimization of integrated photonic waveguides and optical fibers. This powerful design tool offers a set of full-vectorial finite-difference mode solvers with support of widely customizable non-uniform meshing and perfectly matched layer absorbing boundaries, allowing the accurate and efficient calculation of guided and leaky modes and their properties.

VPImodeDesigner provides a user-friendly object-oriented Python interface, which enables you to easily extend the general functionality. Full access to SciPy, NumPy and other Python packages for science, engineering, and data analysis is provided. Waveguide cross-section definitions can be translated into model parameters of passive and active devices, enabling the seamless integration of VPImodeDesigner with VPIcomponentMaker Photonic Circuits.

Publications Highlights:

Purcell effect and Lamb shift as interference phenomena

The Purcell effect and Lamb shift are two well-known physical phenomena which are usually discussed in the context of quantum electrodynamics, with the zero-point vibrations as a driving force of those effects in the quantum approach. Here we discuss the classical counterparts of these quantum effects in photonics, and explain their physics trough interference wave phenomena. As an example, we consider a waveguide in a planar photonic crystal with a side-coupled defect, and demonstrate a perfect agreement between the results obtained on the basis of quantum and classic approaches and reveal their link to the Fano resonance. We find that in such a waveguide-cavity geometry the Purcell effect can modify the lifetime by at least 25 times, and the Lamb shift can exceed 3 half-widths of the cavity spectral line. Scientific Reports, Feb 2016.
Modeling and design framework for SDM transmission systems

We present a sophisticated simulation framework for few-mode fiber based space division multiplexing (SDM) transmission systems supporting the characterization of the interplay between linear and nonlinear fiber effects, and design of key components such as optical amplifiers. We demonstrate its capabilities by discussing applications related to doped and un-doped multimode fiber design, linear and Kerr-induced mode coupling, and effective means for digital equalization at the receiver side. Proc. ICTON, Jul 2015.
Automated design of large-scale photonic integrated circuits

A new platform offers scalable, circuit-level simulation techniques capable of modeling electronic, optoelectronic, and photonic devices on the same circuit and enabling an automated design process. SPIE Newsroom, 23 June 2015
Towards an automated design framework for large-scale photonic integrated circuits

We present our approach towards an automated design framework for integrated photonics and optoelectronics, based on the experience of developing VPIcomponentMaker Photonic Circuits. We show that design tasks imposed by large-scale integrated photonics require introducing new "functional" types of model parameters and extending the hierarchical design approach with advanced parameter scripting capabilities. We discuss the requirements imposed by the need for seamless integration between circuit-level and device-level simulators, and illustrate our approach for the combination of VPIcomponentMaker Photonic Circuits and VPImodeDesigner. We show that accurate and scalable circuit-level modeling of large-scale photonic integrated circuits requires combination of several frequency- and time-domain simulation techniques (scattering-matrix assembly, transmission-line models, FIR and IIR digital filters, etc) within the same circuit simulation. We extend the scattering-matrix assembly approach for modeling linear electronic circuits, and motivate it being a viable alternative to the traditional modified nodal analysis approach employed in SPICE-like electronic circuit simulators. Further, we present our approach to support process design kits (PDK) for generic foundries of integrated photonics. It is based on the PDAFlow API which is designed to link different photonic simulation and design automation tools. In particular, it allows design and optimization of photonic circuits for a selected foundry with VPIcomponentMaker Photonic Circuits, and their subsequent export to PhoeniX OptoDesigner for layout verification and GDSII mask generation. Proc. of SPIE, May 2015.
Induced transparency in double-ring photonic switches for optical Networks-on-Chip

The properties of 2x2 photonic switching elements made of two intersecting waveguides coupled with two micro-rings were studied and it was shown that they can exhibit the effect of coupled-resonator induced transparency (CRIT). Employing the CRIT effect promises reduction of power consumption compared to standard switching techniques, and thus, the potential of utilizing a fast (but weak) electro-optic effect for switching control. Even though non-ideal waveguide crossings add noteworthy complexity, we demonstrated its practical value for designing ultra-low-power optical networks-on-chip. Proc. of AVFOP, Nov 2014.
The power of circuit simulations for designing photonic integrated circuits

The emerging of circuit-level simulators for photonic integrated circuits (PICs) is driven by recent developments in technologies for integration of large-scale monolithic PICs in both, silicon and InP technologies. For that reason, powerful circuit-level simulators should be capable to model on the same circuit different types of sub-components performing photonic, electronic or opto-electronic, active or passive functions. In comparison with device-level simulations, the use of realistic circuit-level abstracted models facilitates rapid functional design without going into technological fabrication details and subsequent design flow. This accelerates the design process and decreases the number of runs to achieve the desired results. Detailed physical modeling remains limited to the design of some specific individual sub-elements. Large-scale PICs might comprise several thousands of elements. The circuit-level abstraction also ensures that the simulation speed to achieve a certain simulation accuracy decreases reasonably slowly with the total number of photonic components in the modeled PIC. In this work, we present our solution for modeling PICs in the framework of the circuit-level simulation tool VPIcomponentMakerā„¢ Photonic Circuits (Carnotstr. 6, 10587, Berlin, Germany, www.VPIphotonics.com). We demonstrate the combination of different simulation approaches in time domain, frequency domain and time-and-frequency domain for fast and accurate simulations. We discuss several diverse modeling benefits by means of application examples on silicon photonic PICs. Concurrency and Computation, Jul 2014.
Parallel simulations of optical communication systems

Sophisticated numerical simulations represent an indispensable tool for developing new optical communication systems and solutions. With wider availability of parallel computing hardware (most notably, multi-core CPUs and GPUs) it becomes increasingly important to effectively parallelize simulation algorithms. In this paper, we review the main principles and common pitfalls of parallel simulations for optical systems and components. The addressed topics include signal propagation in fibers, fiber gratings, active and passive semiconductor components, parallel simulations of transmission systems and photonic integrated circuits represented by networks of modules, as well as general-purpose optimization tasks. Proc. of ICTON, Jul 2014.
Modeling and tolerance analysis of monolithic InP-based dual polarization QPSK transmitter

We present a detailed circuit model for a monolithic integrated InP transmitter and its application for the study of technological limitations such the impact of non-ideal phase shifters and reflections at interfaces. Proc. of IPRM, May 2014.
Modeling of opto-electronics in complex photonic integrated circuits

This work addresses a versatile modeling of complex photonic integrated circuits (PICs) including optical and electrical sub-elements. We introduce a new family of electrical elements, together with a novel electronic-photonic co-design, that complements current capabilities of photonic circuit simulators. This is illustrated with the modeling of complex electric circuits contained in photonic devices. Simulations of the interaction between electrical and optical parts allow the analysis of unwanted effects such as reflections due to impedance mismatching, as well as the optimization of the PIC as a whole. We illustrate the functionalities of our approach through application examples. As a use case, we present a model of the electrical driver for a monolithically-integrated InP transmitter developed in frame of the European research project MIRTHE and the analysis of the driver and the EA-Modulator interplay. Proc. of SPIE, Mar 2014.

Other publications highlights...

  © Sergei Mingaleev