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Publications by topic

Here you can find a list of our main research topics and related journal publications. Topic boundaries are obviously very blurred and some publications repeat multiple times.

Dielectric metamaterials

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S. Khajavi et al., “Experimental demonstration of a silicon nanophotonic antenna for far-field broadened optical phased arrays,” Photon. Res., PRJ 12(9), 1954–1961 (2024) [http://doi.org/10.1364/PRJ.515222].
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R. F. de Cabo et al., “Broadband mode exchanger based on subwavelength Y-junctions,” Nanophotonics (2024) [http://doi.org/10.1515/nanoph-2024-0291].
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P. Cheben et al., “Recent advances in metamaterial integrated photonics,” Adv. Opt. Photon., AOP 15(4), 1033–1105 (2023) [http://doi.org/10.1364/AOP.495828].
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P. Nuño Ruano et al., “Genetic optimization of Brillouin scattering gain in subwavelength-structured silicon membrane waveguides,” Optics & Laser Technology 161, 109130 (2023) [http://doi.org/10.1016/j.optlastec.2023.109130].
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S. Khajavi et al., “Highly efficient ultra-broad beam silicon nanophotonic antenna based on near-field phase engineering,” Sci Rep 12(1), 18808 (2022) [http://doi.org/10.1038/s41598-022-23460-x].
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T. T. D. Dinh et al., “Mid-infrared Fourier-transform spectrometer based on metamaterial lateral cladding suspended silicon waveguides,” Opt. Lett., OL 47(4), 810–813 (2022) [http://doi.org/10.1364/OL.450719].
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V. Vakarin et al., “Metamaterial-Engineered Silicon Beam Splitter Fabricated with Deep UV Immersion Lithography,” Nanomaterials 11(11), 2949 (2021) [http://doi.org/10.3390/nano11112949].
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M. K. Dezfouli et al., “Efficient Bloch mode calculation of periodic systems with arbitrary geometry and open boundary conditions in the complex wavevector domain,” Opt. Express, OE 29(16), 26233–26243 (2021) [http://doi.org/10.1364/OE.432985].
1.
L. Puts et al., “Anti-reflection subwavelength gratings for InP-based waveguide facets,” Opt. Lett., OL 46(15), 3701–3704 (2021) [http://doi.org/10.1364/OL.431353].
1.
S. Khajavi et al., “Compact and highly-efficient broadband surface grating antenna on a silicon platform,” Opt. Express, OE 29(5), 7003–7014 (2021) [http://doi.org/10.1364/OE.416986].
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P. Ginel-Moreno et al., “Highly efficient optical antenna with small beam divergence in silicon waveguides,” Opt. Lett., OL 45(20), 5668–5671 (2020) [http://doi.org/10.1364/OL.404012].
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M. K. Dezfouli et al., “Perfectly vertical surface grating couplers using subwavelength engineering for increased feature sizes,” Opt. Lett., OL 45(13), 3701–3704 (2020) [http://doi.org/10.1364/OL.395292].
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P. Cheben et al., “Bragg filter bandwidth engineering in subwavelength grating metamaterial waveguides,” Opt. Lett., OL 44(4), 1043–1046 (2019) [http://doi.org/10.1364/OL.44.001043].

Gratings and Photonic Antennas

1.
S. Khajavi et al., “Experimental demonstration of a silicon nanophotonic antenna for far-field broadened optical phased arrays,” Photon. Res., PRJ 12(9), 1954–1961 (2024) [http://doi.org/10.1364/PRJ.515222].
1.
S. Khajavi et al., “Highly efficient ultra-broad beam silicon nanophotonic antenna based on near-field phase engineering,” Sci Rep 12(1), 18808 (2022) [http://doi.org/10.1038/s41598-022-23460-x].
1.
M. K. Dezfouli et al., “Efficient Bloch mode calculation of periodic systems with arbitrary geometry and open boundary conditions in the complex wavevector domain,” Opt. Express, OE 29(16), 26233–26243 (2021) [http://doi.org/10.1364/OE.432985].
1.
S. Khajavi et al., “Compact and highly-efficient broadband surface grating antenna on a silicon platform,” Opt. Express, OE 29(5), 7003–7014 (2021) [http://doi.org/10.1364/OE.416986].
1.
P. Ginel-Moreno et al., “Highly efficient optical antenna with small beam divergence in silicon waveguides,” Opt. Lett., OL 45(20), 5668–5671 (2020) [http://doi.org/10.1364/OL.404012].
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D. Melati et al., “Design of Compact and Efficient Silicon Photonic Micro Antennas with Perfectly Vertical Emission,” IEEE J. Select. Topics Quantum Electron. 27(1), 1–10 (2020) [http://doi.org/10.1109/JSTQE.2020.3013532].
1.
M. K. Dezfouli et al., “Perfectly vertical surface grating couplers using subwavelength engineering for increased feature sizes,” Opt. Lett., OL 45(13), 3701–3704 (2020) [http://doi.org/10.1364/OL.395292].
1.
D. Melati et al., “Mapping the global design space of nanophotonic components using machine learning pattern recognition,” Nat Commun 10(1), 1–9 (2019) [http://doi.org/10.1038/s41467-019-12698-1].

Inverse design and machine learning

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P. Manfredi, A. Waqas, and D. Melati, “Stochastic and multi-objective design of photonic devices with machine learning,” Sci Rep 14(1), 7162 (2024) [http://doi.org/10.1038/s41598-024-57315-4].
1.
P. Cheben et al., “Recent advances in metamaterial integrated photonics,” Adv. Opt. Photon., AOP 15(4), 1033–1105 (2023) [http://doi.org/10.1364/AOP.495828].
1.
P. Nuño Ruano et al., “Genetic optimization of Brillouin scattering gain in subwavelength-structured silicon membrane waveguides,” Optics & Laser Technology 161, 109130 (2023) [http://doi.org/10.1016/j.optlastec.2023.109130].
1.
M. K. Dezfouli et al., “Efficient Bloch mode calculation of periodic systems with arbitrary geometry and open boundary conditions in the complex wavevector domain,” Opt. Express, OE 29(16), 26233–26243 (2021) [http://doi.org/10.1364/OE.432985].
1.
D. Melati et al., “Design of Compact and Efficient Silicon Photonic Micro Antennas with Perfectly Vertical Emission,” IEEE J. Select. Topics Quantum Electron. 27(1), 1–10 (2020) [http://doi.org/10.1109/JSTQE.2020.3013532].
1.
M. K. Dezfouli et al., “Perfectly vertical surface grating couplers using subwavelength engineering for increased feature sizes,” Opt. Lett., OL 45(13), 3701–3704 (2020) [http://doi.org/10.1364/OL.395292].
1.
D. Melati et al., “Mapping the global design space of nanophotonic components using machine learning pattern recognition,” Nat Commun 10(1), 1–9 (2019) [http://doi.org/10.1038/s41467-019-12698-1].

Stochastic tools for photonics

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P. Manfredi, A. Waqas, and D. Melati, “Stochastic and multi-objective design of photonic devices with machine learning,” Sci Rep 14(1), 7162 (2024) [http://doi.org/10.1038/s41598-024-57315-4].
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A. Waqas, P. Manfredi, and D. Melati, “Performance Variability Analysis of Photonic Circuits With Many Correlated Parameters,” Journal of Lightwave Technology 39(14), 4737–4744 (2021) [http://doi.org/10.1109/JLT.2021.3076023].
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A. Waqas et al., “Efficient variability analysis of photonic circuits by stochastic parametric building blocks,” IEEE Journal of Selected Topics in Quantum Electronics, 1–1 (2020) [http://doi.org/10.1109/JSTQE.2019.2950761].
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A. Waqas et al., “Stochastic process design kits for photonic circuits based on polynomial chaos augmented macro-modelling,” Opt. Express 26(5), 5894–5907 (2018) [http://doi.org/10.1364/OE.26.005894].
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T.-W. Weng et al., “Stochastic simulation and robust design optimization of integrated photonic filters,” Nanophotonics 6(1), 299–308 (2017) [http://doi.org/10.1515/nanoph-2016-0110].
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A. Waqas, D. Melati, and A. Melloni, “Sensitivity Analysis and Uncertainty Mitigation of Photonic Integrated Circuits,” Journal of Lightwave Technology 35(17), 3713–3721 (2017) [http://doi.org/10.1109/JLT.2017.2714862].

Photonic Devices and Circuits

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Y. Yang et al., “Generation of multiple user-defined dispersive waves in a silicon nitride waveguide,” Optica, OPTICA 11(8), 1070–1076 (2024) [http://doi.org/10.1364/OPTICA.521625].
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V. Vitali et al., “Fully integrated and broadband Si-rich silicon nitride wavelength converter based on Bragg scattering intermodal four-wave mixing,” Photon. Res., PRJ 12(3), A1–A10 (2024) [http://doi.org/10.1364/PRJ.506691].
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V. Vitali et al., “L- to U-Band Wavelength Conversion of QPSK Signals Using Intermodal Four-Wave Mixing,” IEEE Photonics Technology Letters, 1–1 (2024) [http://doi.org/10.1109/LPT.2024.3426925].
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S. Janz et al., “Optical wavefront phase-tilt measurement using Si-photonic waveguide grating couplers,” Opt. Lett., OL 48(23), 6236–6239 (2023) [http://doi.org/10.1364/OL.506013].
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D. Melati et al., “Athermal echelle grating and tunable echelle grating demultiplexers using a Mach-Zehnder interferometer launch structure,” Opt. Express, OE 30(9), 14202–14217 (2022) [http://doi.org/10.1364/OE.453273].
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R. Cheriton et al., “Spectrum-free integrated photonic remote molecular identification and sensing,” Opt. Express, OE 28(19), 27951–27965 (2020) [http://doi.org/10.1364/OE.400061].
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S. Janz et al., “Photonic temperature and wavelength metrology by spectral pattern recognition,” Opt. Express, OE 28(12), 17409–17423 (2020) [http://doi.org/10.1364/OE.394642].
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D. Melati et al., “Compact and Low Crosstalk Echelle Grating Demultiplexer on Silicon-On-Insulator Technology,” Electronics 8(6), 687 (2019) [http://doi.org/10.3390/electronics8060687].
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D. Melati et al., “Athermal echelle grating filter in silicon-on-insulator using a temperature-synchronized input,” Opt. Express, OE 26(22), 28651–28660 (2018) [http://doi.org/10.1364/OE.26.028651].
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D. Melati et al., “Wideband Integrated Optical Delay Line Based on a Continuously Tunable Mach-Zehnder Interferometer,” IEEE Journal of Selected Topics in Quantum Electronics 24(1), 1–8 (2018) [http://doi.org/10.1109/JSTQE.2017.2723955].
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A. Waqas, D. Melati, and A. Melloni, “Cascaded Mach-Zehnder architectures for photonic integrated delay lines,” IEEE Photonics Technology Letters 30(21), 1830–1833 (2018) [http://doi.org/10.1109/LPT.2018.2865703].
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D. Melati et al., “Integrated all-optical MIMO demultiplexer for mode- and wavelength-division-multiplexed transmission,” Opt. Lett. 42(2), 342–345 (2017) [http://doi.org/10.1364/OL.42.000342].
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D. Melati, A. Alippi, and A. Melloni, “Reconfigurable photonic integrated mode (de)multiplexer for SDM fiber transmission,” Opt. Express 24(12), 12625–12634 (2016) [http://doi.org/10.1364/OE.24.012625].
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D. Melati et al., “ContactLess Integrated Photonic Probe for light monitoring in indium phosphide-based devices,” IET Optoelectronics 9(4), 146–150 (2015) [http://doi.org/10.1049/iet-opt.2014.0159].

Process Design Kits and device models

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A. Waqas et al., “Efficient variability analysis of photonic circuits by stochastic parametric building blocks,” IEEE Journal of Selected Topics in Quantum Electronics, 1–1 (2020) [http://doi.org/10.1109/JSTQE.2019.2950761].
1.
D.-X. Xu et al., “Empirical model for the temperature dependence of silicon refractive index from O to C band based on waveguide measurements,” Opt. Express, OE 27(19), 27229–27241 (2019) [http://doi.org/10.1364/OE.27.027229].
1.
A. Waqas et al., “Stochastic process design kits for photonic circuits based on polynomial chaos augmented macro-modelling,” Opt. Express 26(5), 5894–5907 (2018) [http://doi.org/10.1364/OE.26.005894].
1.
A. Waqas et al., “An Improved Model to Predict the Temperature Dependence of Refractive Index of InP-based Compounds,” Wireless Personal Communications, 607–615 (2017) [http://doi.org/10.1007/s11277-016-3913-5].
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D. Melati, A. Alippi, and A. Melloni, “Waveguide-Based Technique for Wafer-Level Measurement of Phase and Group Effective Refractive Indices,” Journal of Lightwave Technology 34(4), 1293–1299 (2016) [http://doi.org/10.1109/JLT.2015.2500919].
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D. Melati et al., “Wavelength and composition dependence of the thermo-optic coefficient for InGaAsP-based integrated waveguides,” Journal of Applied Physics 120(21), 213102 (2016) [http://doi.org/10.1063/1.4970937].
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M. Smit et al., “An introduction to InP-based generic integration technology,” Semiconductor Science and Technology 29(8), 083001 (2014) [http://doi.org/10.1088/0268-1242/29/8/083001].
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D. Melati et al., “Validation of the Building-Block-Based Approach for the Design of Photonic Integrated Circuits,” Lightwave Technology, Journal of 30(23), 3610–3616 (2012) [http://doi.org/10.1109/JLT.2012.2223658].

Scattering, losses, reflections

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D. Melati et al., “Optical radiative crosstalk in integrated photonic waveguides,” Opt. Lett. 39(13), 3982–3985 (2014) [http://doi.org/10.1364/OL.39.003982].
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D. Melati, A. Melloni, and F. Morichetti, “Real photonic waveguides: guiding light through imperfections,” Adv. Opt. Photon. 6(2), 156–224 (2014) [http://doi.org/10.1364/AOP.6.000156].
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E. Kleijn et al., “Multimode Interference Couplers With Reduced Parasitic Reflections,” Photonics Technology Letters, IEEE 26(4), 408–410 (2014) [http://doi.org/10.1109/LPT.2013.2295624].
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D. Melati, F. Morichetti, and A. Melloni, “A unified approach for radiative losses and backscattering in optical waveguides,” Journal of Optics 16(5), 055502 (2014) [http://doi.org/10.1088/2040-8978/16/5/055502].
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D. Melati, F. Morichetti, and A. Melloni, “Modeling reflections induced by waveguide transitions,” Optical and Quantum Electronics 45(4), 309–316 (2013) [http://doi.org/10.1007/s11082-012-9625-5].