Search Results - "Newton C. Frateschi"

Fourier transform spectrometer on silicon with thermo-optic non-linearity and dispersion correction by Souza, Mario C. M. M., Grieco, Andrew, Frateschi, Newton C., Fainman, Yeshaiahu

“…Miniaturized integrated spectrometers will have unprecedented impact on applications ranging from unmanned aerial vehicles to mobile phones, and silicon…”
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Amorphous Al2O3 Shield for Thermal Management in Electrically Pumped Metallo-Dielectric Nanolasers by Gu, Qing, Shane, Janelle, Vallini, Felipe, Wingad, Brett, Smalley, Joseph S. T., Frateschi, Newton C., Fainman, Yeshaiahu

“…We analyze amorphous Al 2 O 3 (<inline-formula> <tex-math notation="TeX">\(\alpha \) </tex-math></inline-formula>-Al 2 O 3 ) for use as a thick thermally…”
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Integrated Photonic Platform for Robust Differential Refractive Index Sensor by Moras, Andre L., Junior, Valnir C. S., Souza, Mario C. M. M., Cirino, Giuseppe A., Von Zuben, Antonio A. G., Barea, Luis A. M., Frateschi, Newton C.

“…We demonstrate an integrated photonic platform comprising a refractive index (RI) sensor based on Photonic Molecule (PM) that effectively mitigates the…”
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Quasinormal-Mode Perturbation Theory for Dissipative and Dispersive Optomechanics by Primo, André G, Carvalho, Natália C, Kersul, Cauê M, Frateschi, Newton C, Wiederhecker, Gustavo S, Alegre, Thiago P Mayer

“…Despite the several novel features arising from the dissipative optomechanical coupling, such effect remains vastly unexplored due to the lack of a simple…”
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Purcell effect in sub-wavelength semiconductor lasers by Gu, Qing, Slutsky, Boris, Vallini, Felipe, Smalley, Joseph S T, Nezhad, Maziar P, Frateschi, Newton C, Fainman, Yeshaiahu

“…We present a formal treatment of the modification of spontaneous emission rate by a cavity (Purcell effect) in sub-wavelength semiconductor lasers. To…”
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Carrier saturation in multiple quantum well metallo-dielectric semiconductor nanolaser: is bulk material a better choice for gain media? by Vallini, Felipe, Gu, Qing, Kats, Michael, Fainman, Yeshaiahu, Frateschi, Newton C

“…Although multi quantum well (MQW) structure is frequently suggested as the appropriate medium for providing optical gain in nanolasers with low threshold…”
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Embedded coupled microrings with high-finesse and close-spaced resonances for optical signal processing by Souza, Mario C M M, Barea, Luis A M, Vallini, Felipe, Rezende, Guilherme F M, Wiederhecker, Gustavo S, Frateschi, Newton C

“…Single microring resonators have been used in applications such as wavelength multicasting and microwave photonics, but the dependence of the free spectral…”
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Hybrid multimode resonators based on grating-assisted counter-directional couplers by Davis, Jordan A, Grieco, Andrew, Souza, Mario C M M, Frateschi, Newton C, Fainman, Yeshaiahu

“…Research thrusts in silicon photonics are developing control operations using higher order waveguide modes for next generation high-bandwidth communication…”
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Self-Sustained Laser Pulsation in Active Optomechanical Devices by Princepe, Debora, Wiederhecker, Gustavo S., Favero, Ivan, Frateschi, Newton C.

“…We developed a model for an active optomechanical cavity embedding a semiconductor optical gain medium in the presence of dispersive and dissipative…”
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Modeling quasi-dark states with temporal coupled-mode theory by Souza, Mario C M M, Rezende, Guilherme F M, Barea, Luis A M, Wiederhecker, Gustavo S, Frateschi, Newton C

“…Coupled resonators are commonly used to achieve tailored spectral responses and allow novel functionalities in a broad range of applications. The Temporal…”
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Silicon technology compatible photonic molecules for compact optical signal processing by Barea, Luis A. M., Vallini, Felipe, Jarschel, Paulo F., Frateschi, Newton C.

“…Photonic molecules (PMs) based on multiple inner coupled microring resonators allow to surpass the fundamental constraint between the total quality factor…”
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Loss Compensation in Microring-Based Si Photonics Devices via Er3+ Doped Claddings by Jarschel, Paulo Felipe, Souza, Mario C. M. M., Borges Merlo, Rafael, Frateschi, Newton C.

“…We propose and demonstrate a method to compensate insertion losses in Si photonics devices based on ring resonators fabricated in SOI foundries, with no…”
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Accurate modeling and characterization of photothermal forces in optomechanics by Primo, André G., Kersul, Cauê M., Benevides, Rodrigo, Carvalho, Natália C., Ménard, Michaël, Frateschi, Newton C., de Assis, Pierre-Louis, Wiederhecker, Gustavo S., Mayer Alegre, Thiago P.

“…Photothermal effects have been pointed out as prominent sources of forces in optomechanical systems, competing with the standard radiation pressure…”
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Spectral Engineering With CMOS Compatible SOI Photonic Molecules by Barea, Luis A. M., Vallini, Felipe, de Rezende, Guilherme F. M., Frateschi, Newton C.

“…Photonic systems based on microring resonators have a fundamental constraint given by the strict relationship among free spectral range, total quality factor…”
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a-SiOx active photonic crystal resonator membrane fabricated by focused Ga+ ion beam by Figueira, David S L, Barea, Luis A M, Vallini, Felipe, Jarschel, Paulo F, Lang, Rossano, Frateschi, Newton C

“…We have fabricated thin erbium-doped amorphous silicon sub-oxide (a-SiOx) photonic crystal membrane using focused gallium ion beam (FIB). The photonic crystal…”
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Effects of non-uniform size distribution on the spectral optical gain properties of InGaAs/InGaAsP quantum dots by Mialichi, Jose Roberto, Frateschi, Newton C

“…We present a theoretical study of the optical gain, emission wavelength, and threshold current density for edge emitting laser structures with an active region…”
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Enhanced Sensitivity Photonic Molecule Sensor based on Embedded Tapered Microring Resonators by Moras, Andre L., Junior, Valnir C. S., Ascencao, Gabriel R., Pires, Marcus V. A., Frateschi, Newton C., Barea, Luis A. M.

“…We demonstrated a two-fold increase in the sensitivity of silicon nitride optical sensors based on photonic molecules (PM) with tapered microring resonators…”
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Fabrication of cylindrical resonant microcavities using the confinement provided by partially oxidized AlGaAs/GaAs layers by Palomino M, Gustavo A., Pinho N, Pedro V., Garcia, Ailton J., Deneke, Christoph F., Frateschi, Newton C.

“…Two different interfaces for optical confinement in GaAs resonators (air/GaAs/air, air/GaAs/AlOx) are compared in cylindrical microstructures with 10 μm of…”
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Limitations of Coupled Mode Theory to model coupled microresonators "dark states" by de Rezende, Guilherme F. M., Souza, Mario C. M. M., Frateschi, Newton C.

“…In this work we present analytical and experimental results indicating that Coupled Mode Theory, unlike the Transfer Matrix Method, may have limitations in…”
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Amorphous Al 2 O 3 Shield for Thermal Management in Electrically Pumped Metallo-Dielectric Nanolasers by Gu, Qing, Shane, Janelle, Vallini, Felipe, Wingad, Brett, Smalley, Joseph S. T., Frateschi, Newton C., Fainman, Yeshaiahu

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