NM09–A fiber optic probe for thermal therapy

Hernández-Arenas A., Pimentel-Domínguez R., Vélez-Cordero J. R., Hernández-Cordero J.

We demonstrate a novel fiber optic device for controlled generation of photothermal effects. The fiber probe is pumped by a laser diode and incorporates polymer composites allowing to generate highly localized heat and obtain temperature measurements simultaneously. We analyze the temperature field in the vicinity of the device through computer simulations and these are validated […]

119

D07–Numerical simulation on the dependence of carrier transport characteristics on the thickness of the absorbing layer for GaAs-based blocked impurity band (BIB) terahertz detectors

Wang X., Chen Yulu, Wang B., Zhang C., Chen X., Zhang H.

The dependence of carrier transport characteristics on the thickness of the absorbing layer for Gallium Arsenide (GaAs) blocked-impurity-band (BIB) terahertz detector has been investigated in detail. It is found that responsivity linearly increases with the increased thickness of absorbing layer first, and after achieving a peak value, and then starts to dropping slowly.

57

1

PD04–Towards an efficient simulation framework for plasmonic organic hybrid E/O modulators

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

Due to the large computational resources required, with CPU times of the order of several days, full-wave optical simulators can be hardly exploited for the modeling and optimization of plasmonic organic hybrid electro/optic modulators. With the aim to drastically reduce such complexity, in this work we present a divide-et-impera strategy reducing the number of FDTD […]

115

4

PD11–Tunable Polarization Splitter Based on Asymmetric Dual-core Liquid Photonic Crystal Fiber

Younis B. M., Hameed M. F. O., Obayya S. S. A.

An asymmetric dual core photonic crystal fiber (ADC-PCF) tunable polarization splitter is reported and analyzed. The left core of the DC-PCF is infiltrated with nematic liquid crystal (NLC) material to control the wavelength at which coupling occurs between the dual cores of the proposed structure. Moreover, the suggested design can be tuned to split out […]

91

LD02–A Functional Mapping for Passively Mode-Locked Semiconductor Lasers

Gurevich S. V., Javaloyes J., Schelte C.

We present a modern approach for the analysis of passively mode-locked semiconductor lasers that allows for efficient parameter sweeps and time jitter analysis. It permits accessing the ultra-low repetition rate regime where pulses become localized states. The analysis including slow (e.g. thermal) processes or transverse, diffractive dynamics becomes feasible. Our method bridges the divide between […]

101

N03–A Bi quantum film potential as an inverse problem

Thränhardt A., Teichert F., Kuhn E.

Experiments generally only offer access to certain output parameters or spectra. When performing device simulations, we often assume that agreement of theoretical and experimental output means that the model describes the device well. However, this conclusion is by no means mandatory. Here, we show an example of a Bi quantum film where measurements show equidistant […]

112

SC05–Modeling of three-terminal heterojunction bipolar transistor solar cells

Giliberti G., Bonani F., Marti A., Cappelluti F.

Three-terminal solar cells exploiting the heterojunction bipolar transistor structure combine the advantages of independently connected tandem cell architectures – suboptimal gaps, high resilence to spectral variations and to radiation damage – with a simple monolithic structure, since they do not need tunnel junctions. In this work, we study this novel device concept by means of […]

142

NM10–Highly Sensitive Photonic Crystal Gamma Ray Dosimeter

Ibrahim M. S. S., Hameed M. F. O., Hamed M. K. G., El-Okr M. M., Obayya S. S. A.

Highly sensitive 2D Si photonic crystal (PhC) sensor is proposed and analyzed for the detection of gamma-ray doses in the visible light region. The suggested PhC has a cavity infiltrated by poly-vinyl alcohol (PVA) polymer doped with crystal violet and carbol fuchsine dyes. The geometrical parameters of the design are studied to maximize the sensor […]

207

3

D08–Numerical simulation on the effect of the thickness of the absorbing layer on the spectral response characteristics for GaAs-based blocked impurity band (BIB) terahertz detectors

Wang X., Chen Yulu, Wang B., Zhang C., Chen X., Zhang H.

The effect of the thickness of the absorbing layer on the spectral response characteristics for Gallium Arsenide (GaAs) blocked-impurity-band (BIB) terahertz detector has been investigated in detail. It is found that Response bandwidth (BWR) is approximately a linear function of hAbs, and the relationship between the Response bandwidth (BWR) and hAbs has been given in […]

51

PD03–Modelling of photon recycling in optoelectronic devices using a transfer matrix method

Bucciarelli A., Rossi D., Auf der Maur M., Di Carlo A.

In this work we present a generalized transfer matrix method to study the effect of the photon recycling on the performance of solar cells. Photon recycling increases the charge carrier concentration in solar cells, resulting in an increase of the open circuit voltage (Voc). The model is based on the transfer matrix method (TMM), taking […]

98

LD03–Modulation response of VCSELs: a physics-based simulation approach

Gullino A., Tibaldi A., Bertazzi F., Goano M., Daubenschuz M., Michalzik R., Debernardi P.

A preliminary study of the dynamic behaviour of a GaAs/AlGaAs 850 nm VCSEL is presented, with the focus on the small-signal analysis and in particular on the optical amplitude modulation response. Simulations are performed with our in-house quantum-corrected one-dimensional drift-diffusion code D1ANA, updated to perform the AC analysis. The -3 dB cutoff frequency of the […]

202

6

IS01–Scaled III-V optoelectronic devices on silicon

Tiwari P., Mauthe S., Vico Trivino N., Staudinger P., Scherrer M., Wen P., Caimi D., Sousa M., Schmid H., Ding Q., Schenk A., Moselund K. E.

In the present talk we discuss the development of the epitaxial technique Template-Assisted Selective Epitaxy (TASE) and its application for the monolithic integration of scaled III-V active photonic devices on silicon. A unique advantage of TASE for silicon photonics applications is that it enables a truly local integration of III-V material at precisely defined positions, […]

284

9

SC04–Electro-optical modeling for the design of semitransparent mixed bromide-chloride PSCs

Rossi D., Matteocci F., Di Carlo A., Auf der Maur M.

UV-selective absorbing perovskites have attracted significant interest due to their potential applications in innovative fields, such as building integration photovoltaics. This appeal arises from the possibility to tune the bandgap by simply varying their crystal composition. In this work we present electro-optical simulations to study the effect of Cl doping in MAPb(Br1-xClx)3 based semi-transparent solar […]

59

NM11–Numerical Investigation of a Plasmonic Biosensor on Flexible Substrate

Sadik F., Choudhury S.

Surface plasmon resonance (SPR) based sensors are state of the art in bio-sensing. Here we numerically inspect a device that can induce SPR on the opposite side of planar metal films. The evanescent field of SPR can detect wide of refractive index with linear sensitivity. This device modeled on bendable PDMS substrate can launch SPR […]

153

2

D05–Enhanced dynamic properties of Ge-on-Si mode-evolution waveguide photodetectors

Palmieri A., Shafiee A., Alasio M. G. C., Tibaldi A., Ghione G., Bertazzi F., Goano M., Vallone M.

This work discusses coupled three-dimensional electromagnetic and electrical simulations of a Ge-on-Si waveguide photodetector where light is fed through a lateral waveguide. The numerical results show that this coupling solution leads to more uniform photon and carrier  distributions along the Ge absorber compared to a conventional butt-coupled detector, allowing a broader electrooptical bandwidth for high […]

108

PD02–S-shaped waveguide-induced asymmetry between counter-propagating modes in a racetrack resonator

Giannuzzi G., Ghillino E., Bardella P.

Ongoing progress in photonic integrated circuits necessitates the integration of semiconductor ring lasers (SRLs) with high performance and predictable behavior, which can be achieved when the symmetry of the SRL, which supports both clockwise and counterclockwise beam propagation, is unbalanced through loss mechanisms inside the resonator. In this work, numerical simulations were carried out on […]

169

4

LD08–Jitter Reduction of Mode-Locked Hybrid Silicon Laser With Intra Cavity Filter

Shekarpour M., Yavari M. H.

We study the influence of the intra-cavity ring on dynamics, phase noise and timing jitter of a long-ring-cavity colliding pulse mode-locked laser using a delay differential equation (DDE) model. The results of dynamic show that the intra-cavity filter can suppress harmonics of 2 GHz cavity. We also find a reduction of phase noise and timing […]

83

IS02–Shape Optimized Photonic Integrated Circuit for Optical Computing Applications

Gaullier G., Hassan K., Charbonnier B., Thonnart Y., Lebbe N., Gliere A.

Shape optimization techniques were quite recently applied to photonic components but to the best of our knowledge, no application to optical computing has been reported yet. Here, we present the design of a photonic integrated circuit, composed of shape optimized passive components, performing a matrix-vector product. A ≈ 2000 times gain on the overall footprint […]

112

SC06–Electrical modeling of heterojunction silicon solar cells including Indium-Tin-Oxide layers

Balent J., Krc J., Topic M.

In this contribution we performed opto-electrical simulations of heterojunction silicon (HJ Si) solar cell with Indium-Tin-Oxide layers included in simulations as front and rear contacts. Two-dimensional numerical simulations using Sentaurus TCAD software were carried out. We studied the effect of defect state density in p- and n-type hydrogenated amorphous silicon layers on device performance. Rigorous […]

73

N05–Hybrid Electro-Optical Pumping of Plasmonic Nanostructures with Gain

Vyshnevyy A. A., Fedyanin D. Yu.

We propose to pump active plasmonic devices, such as plasmonic amplifiers, lossless plasmonic waveguides and nanolasers, simultaneously electrically and optically (hybrid pumping). We show that such a pumping method results not only in a higher modal gain but also in an improved control over the spatial profile of optical gain in the device, which allows […]

82

2

NM02–Electronic structure of lonsdaleite SiGe alloys

Broderick C. A.

Conventional diamond-structured silicon (Si) and germanium (Ge) possess indirect fundamental band gaps, limiting their potential for applications in light-emitting devices. However, SixGe1-x alloys grown in the lonsdaleite (“hexagonal diamond”) phase have recently emerged as a promising direct gap, Si-compatible material system, with experimental measurements demonstrating strong room temperature photoluminescence. When grown in the lonsdaleite phase, […]

139

6

MM01–Green’s function integral equation methods for modeling of optical devices

Søndergaard T.

Green’s function integral equation methods are presented that can be applied for modeling of optical devices in cases where the problem can be formulated as a scattering problem. The methods are applied to study in three dimensions the effect of a cylindrical micro-lens on radiation emitted from a THz photoconductive antenna, and for studying the […]

183

1

LD09–Over 100 GHz 3-dB down Bandwidth by Direct Modulation of a Coupled Cavity DFB-LD due to Photon-Photon Resonance

Numai T.

This paper reports on 3-dB down bandwidth of 110.6 GHz by direct modulation of a coupled cavity DFB-LD with phase-shifted/uniform gratings due to photon-photon resonance when the injected current is 3.5 times the threshold current.

104

IS03–Simulation of cascaded polarization-coupled systems of broad-area semiconductor lasers

Radziunas M., Montiel-Ponsoda J., Garre-Werner G., Raab V.

We present a brightness- and power-scalable polarization beam combining scheme for high-power, broad-area semiconductor lasers. To achieve the beam combining, we employ Lyot-filtered optical reinjection from an external cavity, which forces lasing of the individual diodes on interleaved frequency combs with overlapping envelopes and enables a high optical coupling efficiency. We demonstrate how repeatedly introduced […]

67

SC02–Analysis and optimization of perovskite-silicon tandem solar cells by full opto-electronic simulation

Aeberhard U., Haeusermann R., Schiller A., Bluelle B., Ruhstaller B.

We present a comprehensive opto-electronic simulation framework for the computational analysis and optimization of perovskite-silicon tandem solar cells, consisting of a combination of a multiscale optical model for the simultaneous consideration of interference in thin coatings and scattering at textured interfaces with a mixed electronic-ionic drift-diffusion transport model that captures the peculiarities of the geometries […]

191

1

N06–Hybrid Electro-Optical Pumping of Plasmonic Nanostructures with Gain

Akter N., Becerril-Gonzalez J.J., Oskam G., Pala N., Ares-Muzio O.

We report on the numerical and experimental study of the optical spectra of Mo-Al2O3 nanocomposites that were grown using sequential DC and RF sputtering. The measured spectra were compared with the ones calculated using FDTD simulations to analyze the prediction accuracy of the approach.

70

NM03–Electronic and Optical Properties of Hydrogen-Terminated Diamond Doped by Molybdenum Oxide: A Density Functional Theory Study

McGhee J., Georgiev V. P.

In this work we investigate the surface transfer doping process induced between a hydrogen-terminated (100) diamond and a metal oxide MoO3, using the Density Functional Theory (DFT) method. Using DFT, we have calculated the electronic and optical properties of the hydrogen-terminated diamond and established a link between the underlying electronic structure and the charge transfer […]

78

1

MM06–Tight binding parameterization through particle swarm optimization algorithm

Di Vito A., Pecchia A., Auf der Maur M., Di Carlo A.

The tight binding (TB) approach represents a good trade-off between accuracy and computational burden. For this reason, it is widely used for device simulations. However, a proper description of a physical system by means of TB requires an accurate parameterization of the Hamiltonian matrix elements (HME), that is usually done by fitting over suitable properties […]

157

5

LD10–Dynamic properties of two-state lasing quantum dot laser for external optical feedback resistant applications

Duan J., Zhou Y., Huang H., Dong B., Wang C., Grillot F.

This work investigates the dynamics of two-state quantum dot lasers through semi-analytically solving a set of rate equations. Simulations reveal that the occurrence of excited state lasing reduces the damping factor of the laser while increases the linewidth enhancement factor associated to the ground state transition. These results are in good agreement with the experimental […]

109

IS04–Optoelectronic III-V nanowire implementation of a neural network in a shared waveguide

Winge D. O., Limpert S., Linke H., Borgstrom M. T., Webb B., Heinze S., Mikkelsen A.

Neural node components consisting of III-V nanowire devices are introduced. This allows for the construction of a small footprint specialized neural network. A broadcasting strategy is developed which removes the need for inter-node wiring. As a model system, an insect brain navigational circuit is chosen and successfully emulated using the introduced nodes and network architecture. […]

106

3