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Your search keyword '"Morandotti, R."' showing total 203 results
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203 results on '"Morandotti, R."'

1. Observation of Brillouin scattering in a high-index doped silica chip waveguide

Author

Zerbib, M., Hoang, V. T., Beugnot, J. C., Huy, K. P., Little, B., Chu, S. T., Moss, D. J., Morandotti, R., Wetzel, B., and Sylvestre, T.

Subjects
Physics - Optics
Abstract

We report the observation of Brillouin backscattering in a 50-cm long spiral high-index doped silica chip waveguide and measured a Brillouin frequency shift of 16 GHz which is in very good agreement with theoretical predictions and numerical simulations based on the elastodynamics equation., Comment: 5 pages, 6 figures

Published
2023

2. 1 Low power continuous-wave nonlinear optics in silica glass integrated waveguide structures

Author

Ferrera, M., Razzari, L., Duchesne, D., Morandotti, R., Yang, Z., Liscidini, M., Sipe, J. E., Chu, S., Little, B. E., and Moss, D. J.

Subjects
Physics - Optics
Abstract

Photonic integrated circuits (PICs) are a key component [1] for future telecommunication networks, where demands for greater bandwidth, network flexibility, low energy consumption and cost must all be met. The quest for all optical components has naturally targeted materials with extremely large nonlinearity, including chalcogenide glasses (ChG) [2] and semiconductors, such as silicon [3] and AlGaAs [4]. Yet issues such as immature fabrication technologies for ChG, and high linear and nonlinear losses for semiconductors, motivate the search for other materials. Here we present the first demonstration of nonlinear optics in integrated silica based glass waveguides using continuous wave (CW) light. We demonstrate four wave mixing (FWM), with low (7mW) CW pump power at a wavelength of 1550nm, in high index doped silica glass ring resonators capable of performing in photonic telecommunications networks as linear filters [5]. The high reliability, design flexibility, and manufacturability of our device raises the possibility of a new platform for future low cost nonlinear all optical PICs., Comment: 15 pages, 5 figures, 32 references

Published
2021
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3. Extreme Raman red shift: ultrafast multimode non-linear space-time dynamics, pulse compression, and broadly tunable frequency conversion

Author

Carpeggiani, P. A., Coccia, G., Fan, G., Kaksis, E., Pugžlys, A., Baltuška, A., Piccoli, R., Jeong, Y. -G., Rovere, A., Morandotti, R., Razzari, L., Schmidt, B. E., Voronin, A. A., and Zheltikov, A. M.

Subjects
Physics - Optics
Abstract

Ultrashort high-energy pulses at wavelengths longer than 1 $\mu$m are nowadays desired for a vast variety of applications in ultrafast and strong-field physics. To date, the main answer to the wavelength tunability for energetic, broadband pulses still relies on optical parametric amplification (OPA), which often requires multiple and complex stages, may feature imperfect beam quality and has limited conversion efficiency into one of the amplified waves. In this work, we present a completely different strategy to realize an energy-efficient and scalable laser frequency shifter. This relies on the continuous red shift provided by stimulated Raman scattering (SRS) over a long propagation distance in nitrogen-filled hollow core fibers (HCF). We show a continuous tunability of the laser wavelength from 1030 nm up to 1730 nm with conversion efficiency higher than 70% and high beam quality. The highly asymmetric spectral broadening, arising from the spatiotemporal nonlinear interplay between high-order modes of the HCF, can be readily employed to generate pulses (~20 fs) significantly shorter than the pump ones (~200 fs) with high beam quality, and the pulse energy can further be scaled up to tens of millijoules. We envision that this technique, coupled with the emerging high-power Yb laser technology, has the potential to answer the increasing demand for energetic multi-TW few-cycle sources tunable in the near-IR.

Published
2020

4. High performance photonic microwave filters based on a 50GHz optical soliton crystal Kerr micro-comb

Author

Xu, X., Tan, M., Wu, J., Nguyen, T., Chu, S. T., Little, B. E., Morandotti, R., Mitchell, A., and Moss, D. J.

Subjects
Physics - Applied Physics, Physics - Optics
Abstract

We demonstrate a photonic radio frequency (RF) transversal filter based on an integrated optical micro-comb source featuring a record low free spectral range of 49 GHz yielding 80 micro-comb lines across the C-band. This record-high number of taps, or wavelengths for the transversal filter results in significantly increased performance including a QRF factor more than four times higher than previous results. Further, by employing both positive and negative taps, an improved out-of-band rejection of up to 48.9 dB is demonstrated using Gaussian apodization, together with a tunable centre frequency covering the RF spectra range, with a widely tunable 3-dB bandwidth and versatile dynamically adjustable filter shapes. Our experimental results match well with theory, showing that our transversal filter is a competitive solution to implement advanced adaptive RF filters with broad operational bandwidths, high frequency selectivity, high reconfigurability, and potentially reduced cost and footprint. This approach is promising for applications in modern radar and communications systems., Comment: 19 pages, 12 figures, 107 references, Winner IEEE JLT 2019 Paper of the Year Revised - references updated and links to award websites added

Published
2019
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5. Feasibility Study for the Generation of High Power Continuous Wave Terahertz Radiation using Frequency Difference Generation

Author

Nallapan, K., Morandotti, R., and Skorobogatiy, M.

Subjects
Physics - Optics
Abstract

The goal of this report is to study the conditions for efficient THz generation using Frequency Difference Generation principle. In particular, two CW IR beams are used together with a periodically poled lithium niobate crystal in order to generate a continuous THz wave. As a source of the IR pump beams we consider a 30W (CW) IPG Er-doped fiber-amplifier which currently is the most powerful commercial amplifier on the market. The work is motivated by application of CW sources of THz waves in high bit wireless communication applications. The amplifier will allow to mix two optically modulated IR beams and to generate modulated THz signal.

Published
2017

6. Ultra-low power nonlinear optics in a high Q CMOS compatible integrated micro-ring resonator

Author

Ferrera, M., Duchesne, D., Razzari, L., Peccianti, M., Morandotti, R., Cheben, P., Janz, S., Xu, D. -X., Little, B. E., Chu, S., and Moss, D. J.

Subjects
Physics - Optics
Abstract

We demonstrate efficient, low power, continuous-wave four-wave mixing in the C-band, using a high index doped silica glass micro ring resonator having a Q-factor of 1.2 million. A record high conversion efficiency for this kind of device is achieved over a bandwidth of 20nm. We show theoretically that the characteristic low dispersion enables phase-matching over a bandwidth > 160nm., Comment: 7 pages, 5 figures, 24 references

Published
2017
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7. Parametric gain and wavelength conversion via third order nonlinear optics a CMOS compatible waveguide

Author

Pasquazi, A., Peccianti, M., Lamont, M., Morandotti, R., Little, B. E, Chu, S., and Moss, D. J

Subjects
Physics - Optics
Abstract

We demonstrate sub-picosecond wavelength conversion in the C-band via four wave mixing in a 45cm long high index doped silica spiral waveguide. We achieve an on/off conversion efficiency (signal to idler) of +16.5dB as well as a parametric gain of +15dB for a peak pump power of 38W over a wavelength range of 100nm. Furthermore, we demonstrated a minimum gain of +5dB over a wavelength range as large as 200nm., Comment: 8 pages, 4 figures, 30 references

Published
2017
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9. New CMOS Compatible Platforms for Integrated Nonlinear Optical Signal Processing

Author

Moss, D. J. and Morandotti, R.

Subjects
Physics - Optics
Abstract

Nonlinear photonic chips have succeeded in generating and processing signals all-optically with performance far superior to that possible electronically - particularly with respect to speed. Although silicon-on-insulator has been the leading platform for nonlinear optics, its high two-photon absorption at telecommunications wavelengths poses a fundamental limitation. This paper reviews some of the recent achievements in CMOS-compatible platforms for nonlinear optics, focusing on amorphous silicon and Hydex glass, highlighting their potential future impact as well as the challenges to achieving practical solutions for many key applications. These material systems have opened up many new capabilities such as on-chip optical frequency comb generation and ultrafast optical pulse generation and measurement., Comment: 8 pages, 10 figures 80 references. arXiv admin note: substantial text overlap with arXiv:1404.5610

Published
2014
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11. Broadband terahertz plasmonic multiplexers

Author

Dong, J., primary, Tomasino, A., additional, Balistreri, G., additional, You, P., additional, Vorobiov, A., additional, Chareete, E., additional, Drogoff, B. Le, additional, Chaker, M., additional, Yurtsever, A., additional, Stivala, S., additional, Vincenti, M. A., additional, Angelis, C. De, additional, Kip, D., additional, Azaña, J., additional, and Morandotti, R., additional

Published
2023
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13. Nonlinear and Quantum Effects in Integrated Microcavities

Author

Fischer, B., primary, Roztocki, P., additional, Reimer, C., additional, Sciara, S., additional, Zhang, Y., additional, Islam, M., additional, Cortés, L. Romero, additional, Bharadwaj, S., additional, Moss, D. J., additional, Azaña, J., additional, Caspani, L., additional, Kues, M., additional, and Morandotti, R., additional

Published
2020
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15. Stability of laser cavity-solitons for metrological applications

Author

Cutrona, A., primary, Rowley, M., additional, Bendahmane, A., additional, Cecconi, V., additional, Peters, L., additional, Olivieri, L., additional, Little, B. E., additional, Chu, S. T., additional, Stivala, S., additional, Morandotti, R., additional, Moss, D. J., additional, Totero Gongora, J. S., additional, Peccianti, M., additional, and Pasquazi, A., additional

Published
2023
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16. Supercontinua from Multimodal HCFs

Author

Labranche, A., primary, Jeong, Y.-G., additional, Piccoli, R., additional, Tempea, G., additional, Raffray, A., additional, Zanotto, L., additional, Ghaderi, P., additional, Morandotti, R., additional, Légaré, F., additional, Couairon, A., additional, Razzari, L., additional, and Schmidt, B. E., additional

Published
2023
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17. New Applications of Integrated Optics in Quantum Photonics and Machine Learning

Author

Di Lauro, L., primary, Sciara, S., additional, Aadhi, A., additional, Montaut, N., additional, Alamgir, I., additional, Perron, N., additional, Fischer, B., additional, Dmitriev, P., additional, Yu, H., additional, Mazoukh, C., additional, Chemnitz, M., additional, Little, B. E., additional, Chu, S. T., additional, Moss, D. J., additional, Wang, Z., additional, and Morandotti, R., additional

Published
2023
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18. Smart Nonlinear Photonics: From On-chip Pulse Processing to Tailored Nonlinear Fiber Propagation

Author

Hoang, V.T., primary, Boussafa, Y., additional, Chaves, B. P., additional, Sader, L., additional, Fischer, B., additional, Chemnitz, M., additional, Roztocki, P., additional, MacLellan, B., additional, Reimer, C., additional, Helsten, R., additional, Février, S., additional, Couderc, V., additional, Kues, M., additional, Pasquazi, A., additional, Peccianti, M., additional, Little, B., additional, Chu, S. T., additional, Moss, D.J., additional, Azaña, J., additional, Morandotti, R., additional, and Wetzel, B., additional

Published
2023
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21. Terahertz polarization-division multiplexing within a four-wire waveguide

Author

Dong, J., Tomasino, A., Balistreri, G., You, P., Vorobiov, A., Charette, E., Drogoff, B. L., Chaker, M., Yurtsever, A., Stivala, S., Vincenti, M. A., De Angelis, C., Kip, D., Azana, J., Morandotti, R., Dong J., Tomasino A., Balistreri G., You P., Vorobiov A., Charette E., Drogoff B.L., Chaker M., Yurtsever A., Stivala S., Vincenti M.A., De Angelis C., Kip D., Azana J., and Morandotti R.

Subjects
metal-wire waveguide, polarization, multiplexing, Terahertz, metal-wire waveguides, signal processing, Settore ING-INF/01 - Elettronica
Abstract

We demonstrate a new metal-wire waveguide topology, namely a four-wire waveguide, which simultaneously acts as a broadband terahertz polarization-division multiplexer and as a novel platform to realize the independent manipulation of polarization-division multiplexed terahertz signals.

Published
2022

22. Terahertz four-wire waveguides for broadband signal processing and multiplexing

Author

Dong, J., primary, Tomasino, A., additional, Balistreri, G., additional, You, P., additional, Vorobiov, A., additional, Chareete, E., additional, Drogoff, B. Le, additional, Chaker, M., additional, Yurtsever, A., additional, Stivala, S., additional, Vincenti, M. A., additional, Angelis, C. De, additional, Kip, D., additional, Azana, J., additional, and Morandotti, R., additional

Published
2022
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23. Terahertz Imaging for Nanoparticle-assisted Laser Therapy

Author

Dong, J., primary, Breitenborn, H., additional, Piccoli, R., additional, Besteiro, L. V., additional, You, P., additional, Caraffini, D., additional, Wang, Z. M., additional, Govorov, A. O., additional, Naccache, R., additional, Vetrone, F., additional, Razzari, L., additional, and Morandotti, R., additional

Published
2022
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25. Terahertz polarization-division multiplexing within a four-wire waveguide

Author

Dong, J., primary, Tomasino, A., additional, Balistreri, G., additional, You, P., additional, Vorobiov, A., additional, Charette, E., additional, Drogoff, B. Le, additional, Chaker, M., additional, Yurtsever, A., additional, Stivala, S., additional, Vincenti, M. A., additional, De Angelis, C., additional, Kip, D., additional, Azana, J., additional, and Morandotti, R., additional

Published
2022
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26. 4-GW Few-Cycle Visible Pulse Generation via Fiber Mode Mixing

Author

Piccoli, R., Brown, J. M., G Jeong, Y., Rovere, A., Zanotto, L., Gaarde, M. B., Légaré, F., Couairon, A., John C. Travers, Morandotti, R., Schmidt, B. E., and Razzari, L.

Abstract

Starting from 175-fs-long pulses at 1035 nm, we directly generate 20 μJ, 4.6 fs visible pulses through the nonlinear mixing between the spatial modes of a 3-m-long Ar-filled hollow-core fiber, without any pulse post-compression.

Published
2022

29. Tera-OP/s Neuromorphic Processing with Kerr Microcombs

Author

Tan, M., Xu, X., Jiayang Wu, Boes, A., Corcoran, B., Nguyen, T., Chu, S. T., Little, B. E., Morandotti, R., Hicks, D. G., Mitchell, A., and Moss, D. J.

Abstract

We report optical neuromorphic processors based on Kerr micro-combs that are programmable, scalable and ultra-high speed. We demonstrate a perceptron at 11.9Giga-OPS at 8 bits, or 95.2 Gbps, and a convolutional accelerator at 11TeraOPs/s.

Published
2021

31. Optical neuromorphic processing based on Kerr microcombs

Author

Xu, X., primary, Tan, M., additional, Wu, J., additional, Boes, A., additional, Corcoran, B., additional, Nguyen, T., additional, Chu, S. T., additional, Little, B. E., additional, Morandotti, R., additional, Mitchell, A., additional, Hicks, D., additional, and Moss, D. J., additional

Published
2021
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32. Extreme Raman Red-Shift in Nitrogen-Filled Capillary Fibers

Author

Piccoli, R., primary, Carpeggiani, P. A., additional, Jeong, Y.-G., additional, Rovere, A., additional, Morandotti, R., additional, Coccia, G., additional, Fan, G., additional, Kaksis, E., additional, Pugzlys, A., additional, Baltuška, A., additional, Schmidt, B. E., additional, Voronin, A. A., additional, Zheltikov, A., additional, and Razzari, L., additional

Published
2021
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33. Few-Cycle Visible Light Generation in a Hollow-Core Fiber

Author

Piccoli, R., primary, Brown, J. M., additional, Jeong, Y. -G., additional, Rovere, A., additional, Zanotto, L., additional, Gaarde, M. B., additional, Légaré, F., additional, Couairon, A., additional, Travers, J. C., additional, Morandotti, R., additional, Schmidt, B. E., additional, and Razzari, L., additional

Published
2021
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35. Enhanced four-wave mixing in micro-ring resonators integrated with layered graphene oxide films

Author

Jiayang Wu, Yang, Y., Zhang, Y., Qu, Y., Jia, L., Xu, X., Chu, S. T., Little, B. E., Morandotti, R., Jia, B., and Moss, D. J.

Abstract

We experimentally demonstrate enhanced four-wave mixing in micro-ring resonators (MRRs) integrated with graphene oxide films. We achieve up to ~7.6-dB enhancement in conversion efficiency for a uniformly coated MRR and ~10.3-dB for a patterned device.

Published
2020

36. Extreme Raman red shift: ultrafast multimode nonlinear space-time dynamics, pulse compression, and broadly tunable frequency conversion

Author

Carpeggiani, P. A., primary, Coccia, G., additional, Fan, G., additional, Kaksis, E., additional, Pugžlys, A., additional, Baltuška, A., additional, Piccoli, R., additional, Jeong, Y.-G., additional, Rovere, A., additional, Morandotti, R., additional, Razzari, L., additional, Schmidt, B. E., additional, Voronin, A. A., additional, and Zheltikov, A. M., additional

Published
2020
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37. Ultrafast phenomena in hollow-core fibres

Author

Piccoli, R., primary, Jeong, Y., additional, Rovere, A., additional, Zanotto, L., additional, Jia, Y., additional, Legare, F., additional, Morandotti, R., additional, Schmidt, B. E., additional, and Razzari, L., additional

Published
2020
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39. Extreme Raman-Induced Spectral Broadening in Nitrogen-Filled Hollow-Core Fibers

Author

Piccoli, R., primary, Carpeggiani, P. A., additional, Jeong, Y.-G., additional, Rovere, A., additional, Morandotti, R., additional, Coccia, G., additional, Fan, G., additional, Kaksis, E., additional, Pugžlys, A., additional, Baltuska, A., additional, Schmidt, B. E., additional, Voronin, A. A., additional, Zheltikov, A., additional, and Razzari, L., additional

Published
2020
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40. Extreme Raman Spectral Broadening in Hollow-Core Fibers

Author

Coccia, G., primary, Piccoli, R., additional, Carpeggiani, P.A., additional, Fan, G., additional, Kaksis, E, additional, Pugzlys, A., additional, Jeong, Y.-G., additional, Rovere, A., additional, Morandotti, R., additional, Razzari, L., additional, Schmidt, B. E., additional, Voronin, A. A., additional, Zheltikov, A., additional, and Baltuška, A., additional

Published
2020
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45. Terahertz control of air lasing

Author

Clerici, M., primary, Bruhács, A., additional, Faccio, D., additional, Peccianti, M., additional, Spanner, M., additional, Markov, A., additional, Schmidt, B. E., additional, Ozaki, T., additional, Légaré, F., additional, Vidal, F., additional, and Morandotti, R., additional

Published
2019
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47. Low Energy Hollow Core Fiber Pulse Compression Using Molecular Gases

Author

Haddad, E., primary, Safaei, R., additional, Kwon, O., additional, Leblanc, A., additional, Piccoli, R., additional, Jeong, Y.-G., additional, Ibrahim, H., additional, Schmidt, B. E., additional, Morandotti, R., additional, Razzari, L., additional, Légaré, F., additional, and Lassonde, P., additional

Published
2019
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49. Real time measurements of spontaneous breathers generated by modulation instability in optical fibre

Author

Dudley, John Michaël, Narhi, Mikko, Wetzel, Benjamin, Billet, Cyril, Merolla, Jean, TOENGER, Shanti, Sylvestre, Thibaut, Genty, Goëry, Dias, Frédéric, Morandotti, R, Franche-Comté Électronique Mécanique, Thermique et Optique - Sciences et Technologies (UMR 6174) (FEMTO-ST), Université de Technologie de Belfort-Montbeliard (UTBM)-Ecole Nationale Supérieure de Mécanique et des Microtechniques (ENSMM)-Université de Franche-Comté (UFC), Université Bourgogne Franche-Comté [COMUE] (UBFC)-Université Bourgogne Franche-Comté [COMUE] (UBFC)-Centre National de la Recherche Scientifique (CNRS), Tampere University of Technology [Tampere] (TUT), and University of Quebec (INRS-EMT)

Subjects
[PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics], Physics::Optics
Abstract

International audience; Modulation instability is a fundamental process of nonlinear physics, leading to the unstable breakup of a constant amplitude solution of a particular physical system. There has been particular interest in studying modulation instability in the cubic nonlinear Schrödinger equation (NLSE) which models a wide range of nonlinear systems including superfluids, fiber optics, plasmas and Bose-Einstein condensates. Modulation instability in the NLSE is also a significant current area of study in the context of understanding the emergence of high amplitude or high intensity events that satisfy "rogue wave" statistical criteria. Here, exploiting recent advances in real time ultrafast optical metrology via an optical time lens system, we perform real-time measurements in an NLSE optical fibre system of the unstable breakup of a continuous wave field, simultaneously characterising emergent modulation instability breathers, and their associated statistics. Our results allow quantitative comparison between experiment, modelling, and theory, and we show very good agreement in both extracted intensity profiles and associated statistics.

Published
2017

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