IS05–Effect of Nonlinearities on Directed Optical Logic Gates Using Integrated Semiconductor Ring Lasers

Khandelwal A.

Nonlinearities in the semiconductor ring laser (SRL) are incorporated in the analysis of directed optical logic gates and their effects on the output are studied. The paper discusses the effects of gain medium linewidth, internal quantum efficiency and self and cross gain saturation on the output of directed optical NOT gate implemented using SRLs.

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SC08–The lateral photovoltage scanning method (LPS): Understanding doping variations in silicon crystals

Kayser S., Rotundo N., Fuhrmann J., Dropka N., Farrell P.

The lateral photovoltage scanning method (LPS) can be used to detect undesired impurities which appear in silicon crystals during growth. Our goal is to make a digital twin of the LPS method. To this end, we replace inflexible blackbox code with a physics preserving finite volume discretization, confirming three theoretical results via a new simulation […]

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LD12–Modeling Impact of Oxide Island on the Lasing of ARROW-VCSEL

Dems M., Wieckowska M.

We analyze the impact of a low-refractive antiresonant oxide island buried in a top VCSEL mirror on the lasing conditions of lateral modes of different orders. By performing comprehensive thermal, electrical, and optical numerical analysis of the VCSEL device, we show the impact of the size and location of the oxide island on the current […]

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NM05–Simulation of electro optic modulators based on plasmonic directional couplers

Ghomashi M., Tibaldi A., Bertazzi F., Vallone M., Goano M., Ghione G.

In this paper, a new concept and geometry are proposed for plasmonic modulators, whose operation is based on the coupling between two plasmonic slots. An electro-optic polymer is exploited as an active material, and the device can be implemented within a Silicon Photonics platform. The device operates at 1550nm wavelength, typical of data center or […]

116

MM04–Completely Positive Trace Preserving Methods for the Lindblad Equation

Riesch M., Pikl A., Jirauschek C.

The Lindblad master equation is a valuable tool in quantum mechanics, which describes the dynamics of open systems. In the scope of our research, it is combined with the one-dimensional Maxwell’s equations to form the generalized Maxwell-Bloch equations. Since analytical solutions are not available in the general case, numerical methods have to be employed to […]

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LD06–Numerical Study of Optical Frequency Combs in mid-IR Quantum Cascade Lasers: Effective Semiconductor Maxwell-Bloch Equations

Silvestri C., Columbo L., Brambilla M., Gioannini M.

In this paper a theoretical model based on Effective Semiconductor Maxwell-Bloch Equations (ESMBEs) is proposed for the description of the dynamics of a multi-mode mid-Infrared (mid-IR) Quantum Cascade Laser (QCL) in Fabry Perot (FP) configuration, in order to investigate the spontaneous generation of frequency combs in this device. In agreement with recent experimental results our […]

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PD01–Nanophotonic optical phased arrays: opportunities and limitations

Cala’ Lesina A., Goodwill D., Bernier E., Ramunno L., Berini P.

Optical phased arrays can steer a beam without mechanical rotation, thus achieving a very rapid scanning rate. The core element of an optical phased array is the pixel (unit cell) and its ability to control the phase and amplitude of the emitted/scattered light. We discuss the role of nanophotonics in achieving pixels that are small […]

156

D01–Challenges in multiphysics modeling of dual-band HgCdTe infrared detectors

Vallone M., Goano M., Tibaldi A., Hanna S., Eich D., Sieck A., Figgemeier F., Ghione G., Bertazzi F.

We present three-dimensional simulations of HgCdTe-based focal plane arrays (FPAs) with two-color and dual-band sequential infrared pixels having realistic truncated-pyramid shape taking into account the presence of compositionally-graded transition layers. Simulations emphasize the importance of a full-wave approach to the electromagnetic problem, and the evaluations of the optical and diffusive contribution to inter-pixel crosstalk indicate […]

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SC09–Quasi-3D Optimization of Grid Architecture for Photovoltaic Converters Using Solcore

Nikander V., Wei J., Aho A., Polojarvi V., Tukiainen A., Guina M.

Numerical study of metal front contacts grid spacing for photovoltaic (PV) devices is presented with application to PV converter of relatively small size. The model is constructed based on the open source Solcore Python library. A three-step-process is developed to create a hybrid quasi-3D model. The optimal grid spacing was simulated at different temperatures to […]

159

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IS06–Hybrid Electronic-Photonic Integrated Circuits: Hybrid FET-LET SRAM

Pal A., Zhang Y., Yau D. D.

High speed, low power, low leakage, and low noise circuits are extremely essential for modern VLSI chips. Since on-chip cache memories consume appreciable amount of the total chip area and energy, high performance and low power Static Random-Access Memories (SRAMs) are needed for high performance and low power electronic systems. A hybrid FET-LET 6T SRAM, […]

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