Review
Nanoscience & Nanotechnology
Camille-Sophie Bres, Alberto Della Torre, Davide Grassani, Victor Brasch, Christian Grillet, Christelle Monat
Summary: Frequency conversion in nonlinear materials is an important solution to generating new optical frequencies, particularly for supercontinuum generation in waveguides. The advent of photonic crystal fibers has significantly improved our understanding of supercontinuum generation by enabling better control of light confinement. Recent advancements in photonic integrated waveguides have further enhanced supercontinuum generation platforms, allowing for precise control and improved efficiency.
Article
Materials Science, Multidisciplinary
Yuning Zhang, Jiayang Wu, Yunyi Yang, Yang Qu, Linnan Jia, Houssein El Dirani, Sebastien Kerdiles, Corrado Sciancalepore, Pierre Demongodin, Christian Grillet, Christelle Monat, Baohua Jia, David J. J. Moss
Summary: Enhanced supercontinuum generation is achieved in silicon nitride waveguides by incorporating highly nonlinear graphene oxide films. The films are integrated on-chip using a transfer-free and layer-by-layer coating method. Detailed measurements demonstrate significantly improved spectral broadening, reaching up to 2.4 times improvement in bandwidth compared to devices without graphene oxide.
ADVANCED MATERIALS TECHNOLOGIES
(2023)
Review
Optics
Yuxi Fang, Changjing Bao, Si-Ao Li, Zhi Wang, Wenpu Geng, Yingning Wang, Xu Han, Jicong Jiang, Weigang Zhang, Zhongqi Pan, Zhaohui Li, Yang Yue
Summary: Supercontinuum (SC) has wide applications in optical communications, signal processing, metrology, and spectroscopy. This paper reviews the latest progress on various nanophotonic waveguides for Supercontinuum generation (SCG), including the discussion of different materials and their properties, the consideration of waveguide properties, and the analysis of different broadening mechanisms. It also provides perspectives on the spectral coverage, dispersion curves, and novel materials for SCG in nanophotonic waveguides.
LASER & PHOTONICS REVIEWS
(2023)
Article
Optics
Mulong Liu, Chengwei Gu, Xuening Fan, Zhiheng Li, Huimin Huang, Zhizhou Lu, Wei Zhao
Summary: The study introduces a dispersion-flattened technology for producing broadband and low anomalous dispersion while minimizing zero-dispersion wavelengths. This structure can be formed by nanophotonic waveguides using different material combinations, achieving flat dispersion ranging from 0 to 27 ps/nm/km across a wide range of wavelengths.
OPTICS AND LASER TECHNOLOGY
(2022)
Article
Materials Science, Multidisciplinary
Kangzhu Zhou, Qian Li, Zhe Kang, Jiayao Huang, P. K. A. Wai
Summary: A novel on-chip cascaded structure utilizing a microresonator and a slot waveguide for dual pump supercontinuum generation is proposed. By employing a low-power single continuous wave pump, dissipative Kerr soliton is successfully generated and serves as a dual pump seed for supercontinuum generation in the following slot waveguide. Numerical simulations have demonstrated the generation of 1.56 octave-spanning supercontinuum within the wavelength range of 1 to 3 μm.
RESULTS IN PHYSICS
(2021)
Article
Materials Science, Multidisciplinary
Haiyan Shang, Mingjie Zhang, Dandan Sun, Yan-Ge Liu, Zhi Wang, Dong Liu, Siqing Zeng
Summary: Research shows that Ge25Sb10S65 glass has greater hardness and stronger resistance to laser damage, making it suitable for on-chip integrated devices and applications in optical frequency combs or supercontinuum generation.
RESULTS IN PHYSICS
(2021)
Article
Multidisciplinary Sciences
Ronit Sohanpal, Haonan Ren, Li Shen, Callum Deakin, Alexander M. Heidt, Thomas W. Hawkins, John Ballato, Ursula J. Gibson, Anna C. Peacock, Zhixin Liu
Summary: This study demonstrates frequency comb generation using a fully-fibre integrated silicon core fibre as a nonlinear mixer. The all-fibre, cavity-free source combines the material benefits of planar waveguide structures with the advantageous properties of fibre platforms to achieve a flat, high power frequency comb source with narrow linewidth and high optical signal-to-noise ratio.
NATURE COMMUNICATIONS
(2022)
Article
Optics
Kuan-Yuan Chang, Guan-Yan Chen, Hsin-Chieh Yu, Jia-Ming Liu
Summary: Supercontinuum is generated by pumping high-power laser pulses into a hybrid nonlinear fiber consisting of highly nonlinear fiber fusion-spliced with a photonic crystal fiber. Ultra-broadband spectra are more effectively generated using noise-like pulses compared to well-defined pulses.
OPTICS COMMUNICATIONS
(2023)
Article
Optics
Niklas M. Luepken, Maximilian Timmerkamp, Ramona Scheibinger, Kay Schaarschmidt, Markus A. Schmidt, Klaus-J Boller, Carsten Fallnich
Summary: Evidence of intermodal dispersive wave generation by iXPM between different transverse modes during supercontinuum generation in silicon nitride waveguides is presented. The phase modulation of a weak transverse mode by iXPM enables dispersive wave generation within the weak mode, which otherwise lacks the power to facilitate such wave formation. The nonlinear frequency conversion scheme suggests novel phase-matching conditions for extending the spectral bandwidth within supercontinuum generation.
LASER & PHOTONICS REVIEWS
(2021)
Article
Chemistry, Analytical
Jian Yang, Yingning Wang, Yuxi Fang, Wenpu Geng, Wenqian Zhao, Changjing Bao, Yongxiong Ren, Zhi Wang, Yange Liu, Zhongqi Pan, Yang Yue
Summary: In this paper, a silica-cladded Germania-doped ring-core fiber (RCF) that supports orbital angular momentum (OAM) modes is designed. By optimizing the fiber structure parameters, the RCF achieves near-zero flat dispersion. This design serves as an efficient way to extend the spectral coverage of beams carrying OAM modes for various applications.
Article
Optics
Guan-Hong Li, Chieh Huang, Feng-Jung Kao, Min-Hsiung Shih, Hao-Chung Kuo, Yi-Jen Chiu, Chao-Kuei Lee
Summary: In this study, supercontinuum generation from 645.3 nm to 851 nm was demonstrated by using a high-order mode and engineering the dispersion within the high nonlinear refractive index material Ta2O5 waveguide. The results show clear potential for applications.
OPTICS AND LASER TECHNOLOGY
(2024)
Article
Optics
Jialang Zhang, Siyuan Zhang, Xinhua Jiang, Junna Yao, Anting Wang, Qiwen Zhan
Summary: A flat broadband dispersion profile is achieved in a dual-core silicon nitride waveguide by utilizing mode coupling between the TE00 and TE10 modes. The dispersion profile creates four zero dispersion wavelengths and varies between -10 and 13 ps/(nm·km) over an octave bandwidth. By pumping in the anomalous dispersion region, a two-octave supercontinuum spectrum can be generated in the Si3N4 waveguide. The proposed waveguide has a single-layer core structure and is compatible with the photonic Damascus process.
OPTICS AND LASER TECHNOLOGY
(2023)
Article
Optics
Ivan Laryushin, Alexander Romanov
Summary: We theoretically examined the features of ultraviolet secondary radiation produced by three-color ionizing pulses from parametric light generators. Our findings demonstrate that the combination components in the electron current spectrum generated by these pulses follow a strictly exponential decay sequence. By utilizing this effect with moderately short pump durations (30 fs at 800 nm main field), a smooth broadband supercontinuum in the 800-100 nm range can be generated.
Article
Materials Science, Multidisciplinary
Arnaud Lemiere, Remi Bizot, Frederic Desevedavy, Gregory Gadret, Jean-Charles Jules, Pierre Mathey, Christophe Aquilina, Pierre Bejot, Franck Billard, Olivier Faucher, Bertrand Kibler, Frederic Smektala
Summary: The study demonstrates mid-infrared coherent supercontinuum generation in the range of 1.7-18 μm using a unique dispersion-engineered step-index Ge-Se-Te fiber, thus opening up the entire molecular fingerprint region for future chalcogenide fiber platforms.
RESULTS IN PHYSICS
(2021)
Article
Optics
Linyong Yang, Yukun Yang, Bin Zhang, Xiran Zhu, Desheng Zhao, Shuailin Liu, Jing Hou
Summary: This study demonstrates a mid-infrared supercontinuum laser with a record-breaking average output power of over 40W, high efficiency, and excellent power stability. By using a thulium-doped fiber amplifier system and germania fiber, a broadband spectrum covering 1.9-3.5 micrometers wavelength range can be generated.
HIGH POWER LASER SCIENCE AND ENGINEERING
(2022)
Article
Engineering, Electrical & Electronic
Anastasiia Sheveleva, Christophe Finot
Summary: An all-optical scheme for generating a train of optical pulses is proposed and numerically validated in this study. By modulating a continuous wave with a periodic binary temporal phase pattern followed by spectral phase shaping, ultrashort pulse trains can be obtained. The study provides analytical guidelines for describing pulse train formation and their characteristics, indicating that pulses with a duration of a few picoseconds at a repetition rate of 10 GHz can be expected under realistic experimental conditions.
MICROWAVE AND OPTICAL TECHNOLOGY LETTERS
(2021)
Article
Education, Scientific Disciplines
Christophe Finot, Sonia Boscolo
Summary: This article describes a research project conducted with undergraduate physics students, aimed at exploring the use of a neural network to study a classic problem in wave optics. The students were able to appreciate the basic steps involved in a machine-learning process through this experience.
EUROPEAN JOURNAL OF PHYSICS
(2022)
Article
Optics
Mehdi Mabed, Fanchao Meng, Lauri Salmela, Christophe Finot, Goery Genty, John M. Dudley
Summary: This study demonstrates that neural networks can accurately predict the time-domain properties of optical fiber instabilities by analyzing spectral intensity profiles. It extends the previous research on machine learning prediction for single-pass fiber propagation instabilities to the more complex case of noise-like pulse dynamics in a dissipative soliton laser.
Article
Chemistry, Physical
Aurore Andrieux, Marie-Maxime Mennemanteuil, Nicolas Geoffroy, Melanie Emo, Laurent Markey, Kamal Hammani
Summary: TiO2 films were obtained by ICPCVD with tailored structural, crystalline, and optical properties. By carefully controlling deposition conditions, nanoscale rutile crystallization without interfaces or inhomogeneities was achieved, leading to a high refractive index in the visible range. Annealing further increased the refractive index.
Article
Nanoscience & Nanotechnology
Pierre Bejot, Bertrand Kibler
Summary: Space-time light structuring is a powerful tool for controlling the dynamics of pulsed beams. Recent advancements have greatly enhanced the ability to manipulate and generate space-time distributions of light, allowing for applications across the field of optics. This study proposes a framework to classify light wavepackets in all dimensions, with a focus on those carrying orbital angular momentum. This theoretical approach opens up possibilities for versatile synthesis of space-time optics.
Article
Optics
Anastasiia Sheveleva, Ugo Andral, Bertrand Kibler, Pierre Colman, John M. Dudley, Christophe Finot
Summary: In this study, we overcome the challenges of observing ideal four-wave mixing dynamics and extend the effective propagation distance using programmable phase and amplitude shaping. The experimental results are in excellent agreement with numerical solutions, revealing the complete phase space topology.
Article
Optics
Anastasiia Sheveleva, Pierre Colman, John M. Dudley, Christophe Finot
Summary: The dynamics of ideal four-wave mixing in optical fiber is reconstructed using experimental measurements and supervised machine learning strategies. The neural network accurately predicts the nonlinear dynamics and retrieves the main features of the phase space topology.
Article
Engineering, Electrical & Electronic
Andres Martinez, Vittorio Grimaldi, Christian De Vita, Deepak Kumar Sharma, Isabelle Gallet, Aurore Andrieux, Juan Arocas, Kamal Hammani, Laurent Markey, Jean-Claude Weeber, Alexandre Bouhelier, Marco Sampietro, Andrea Melloni, Francesco Morichetti
Summary: This work presents the realization of an in-line Surface Plasmon Detector (SPD) that utilizes the photothermal effect to monitor the optical power in a titanium dioxide (TiO2) optical waveguide. Detailed design guidelines are provided to maximize the responsivity of the SPD, considering the effects of the metal geometry on the coupling between the dielectric and plasmonic modes, the power dissipated in the metal, and the equivalent thermal resistance of the structure. Experimental validation is provided for an ultra-compact 1.6-μm-long SPD operating at a wavelength of 1550 nm with a sensitivity of -20 dBm and a bandwidth higher than 100 kHz. The proposed device concept can be applied to generic dielectric platforms and other wavelength ranges where SPP propagation is supported.
IEEE JOURNAL OF QUANTUM ELECTRONICS
(2023)
Article
Optics
Anastasiia Sheveleva, Said Hamdi, Aurelien Coillet, Christophe Finot, Pierre Colman
Summary: We demonstrate that the dynamic mode decomposition technique can reduce noise in the dispersive Fourier transform dataset and enable more precise quantitative analysis of experimental data. Therefore, we show that the oscillation pattern of a soliton molecule is actually a result of the interaction between several elementary vibration modes.
Article
Optics
Anastasiia Sheveleva, Pierre Colman, John. M. Dudley, Christophe Finot
Summary: The four-wave mixing process in Kerr media can be described by a closed trajectory in the associated phase plane. This study demonstrates the ability to manipulate these trajectories and connect any two points that are not part of the same orbit. The approach is based on localized abrupt modification of the system's average power and is confirmed through various experimental realizations.
OPTICS COMMUNICATIONS
(2023)
Article
Optics
Sonia Boscolo, John M. Dudley, Christophe Finot
Summary: We utilize a supervised machine-learning model based on a neural network to predict the temporal and spectral reshaping of a simple sinusoidal modulation into a pulse train with a comb structure in the frequency domain, resulting from nonlinear propagation in an optical fiber. We study both normal and anomalous second-order dispersion regimes of the fiber, and leverage the speed of the neural network to explore the input parameter space for generating customized combs or significant temporal and spectral focusing.
OPTICS COMMUNICATIONS
(2023)
Article
Optics
Anastasiia Sheveleva, Mathieu Leonardo, Christophe Finot, Pierre Colman
Summary: This paper investigates the calculation of the coupling constant between two nearby waveguides. Formulas derived from the perturbative theory applied to the electromagnetic Maxwell equations are usually used for prediction. However, these formulas fail to provide reliable estimates when there is a large index contrast between the waveguide core and its cladding. The paper demonstrates that considering the local field effect can improve the accuracy, and in the case of structured and inhomogeneous cladding, an effective background index must be taken into account for accurate corrections. This theoretical study also includes discussions on the impact of the substrate on the interwaveguide coupling constant.
Article
Physics, Multidisciplinary
Alexandre Parriaux, Kamal Hammani, Christophe Thomazo, Olivier Musset, Guy Millot
Summary: We demonstrate the use of dual-comb spectroscopy for isotope ratio measurements, showing that it can be extended to the mid-infrared using a difference frequency generator. The measurements performed show good repeatability and low uncertainty, with results compatible to those obtained by isotope ratio mass spectrometry.
PHYSICAL REVIEW RESEARCH
(2022)
Proceedings Paper
Engineering, Electrical & Electronic
Alexandre Parriaux, Kamal Hammani, Guy Millot
Summary: An electro-optic dual-comb spectrometer operating in the midinfrared for carbon dioxide sensing is presented. Isotopic ratio measurements of (CO2)-C-13/(CO2)-C-12 were performed with good agreements with the expectations. (c) 2021 The Author(s).
2021 CONFERENCE ON LASERS AND ELECTRO-OPTICS (CLEO)
(2021)
