Article
Optics
Yaozu Xie, Jiaqi Li, Yanfeng Zhang, Zeru Wu, Shihao Zeng, Shuqing Lin, Zhaoyang Wu, Wenchao Zhou, Yujie Chen, Siyuan Yu
Summary: The research reports the successful generation of coherent soliton frequency combs in micro-ring resonators fabricated in deuterated silicon nitride waveguides with a loss of 0.09 dB/cm. The material preparation and fabrication process using inductance-coupled plasma chemical vapor deposition are fully CMOS-compatible, marking a significant advancement in silicon nitride photonic technologies.
PHOTONICS RESEARCH
(2022)
Article
Engineering, Electrical & Electronic
Wenrui Wang, Xianshun Ming, Lei Shi, Kai Ma, Dezheng Ren, Qibing Sun, Leiran Wang, Wenfu Zhang
Summary: In this study, the generation of a broadband mid-infrared frequency comb in a silicon microring resonator is demonstrated through numerical simulations. The large-cross-section air-cladding waveguide is utilized to mitigate the absorption loss. The effects of higher order nonlinearities are also investigated, showing the possibility to obtain octave-spanning Raman-Kerr comb lines and pure Kerr frequency soliton combs.
IEEE PHOTONICS JOURNAL
(2023)
Article
Engineering, Electrical & Electronic
Pengfei Chang, Hongyu Luo, Qi Wu, Yongzhi Wang, Jianfeng Li
Summary: We present tunable mid-infrared Raman soliton generation from 2.80 to 3.17 μm based on fluorotellurite fiber. The experimental results indicate that fluorotellurite fibers are superior nonlinear media for the generation of tunable mid-infrared ultrashort pulses.
IEEE PHOTONICS TECHNOLOGY LETTERS
(2022)
Article
Multidisciplinary Sciences
Mingchen Liu, Robert M. M. Gray, Luis Costa, Charles R. R. Markus, Arkadev Roy, Alireza Marandi
Summary: In this study, cross-comb spectroscopy is introduced and demonstrated in the mid-infrared as a variant of dual-comb spectroscopy. It provides enhanced performance and allows for the detection of mid-infrared spectral information using near-infrared detection.
NATURE COMMUNICATIONS
(2023)
Article
Optics
Mingchen Liu, Robert M. Gray, Arkadev Roy, Kirk A. Ingold, Evgeni Sorokin, Irina Sorokina, Peter G. Schunemann, Alireza Marandi
Summary: This paper reports a method to generate high power and high efficiency optical frequency combs in the mid-infrared spectral region. By utilizing an optical parametric oscillator operating in the simulton regime to form purely quadratic solitons, superior performance compared to previous demonstrations and other sources is achieved.
LASER & PHOTONICS REVIEWS
(2022)
Article
Multidisciplinary Sciences
J. M. Chavez Boggio, D. Bodenmueller, S. Ahmed, S. Wabnitz, D. Modotto, T. Hansson
Summary: The authors engineer a hybrid Mach-Zehnder micro-ring resonator to achieve an 80% pump-to-comb conversion efficiency based on dissipative Kerr solitons, increasing the efficiency and maximizing the utilization of pump power.
NATURE COMMUNICATIONS
(2022)
Article
Optics
Siqi Lu, Guosheng Lin, Di Xia, Zifu Wang, Liyang Luo, Zhaohui Li, Bin Zhang
Summary: In this study, a sandwich-integrated all-ChG microresonator was used to demonstrate a mid-infrared (MIR) microcomb generator covering a wavelength range from 6.94μm to 12.04μm. The novel microresonator features a symmetrically uniform distribution of the mode field, precise dispersion engineering, and low optical loss, offering a wide transmission window, high Kerr nonlinearity, and hybrid-fabrication flexibility on a silicon wafer. Numerical simulations successfully demonstrated a MIR Kerr frequency comb with a bandwidth of 5.1μm, assisted by dispersive waves. A feasible fabrication scheme for on-demand ChG microresonators was also proposed. These findings highlight the advantages of integrated ChG photonic devices in MIR nonlinear photonics and their potential applications in MIR spectroscopy.
Article
Optics
Xinxing Liu, Wenhui Hao, Zhihui Yang, Yulong Tang
Summary: By adjusting the configuration of the laser, narrow pulses and high peak power can be achieved in random fiber lasers, and an over-one-octave visible-NIR Raman frequency comb is generated from single-mode silica fibers for the first time. This has potential applications in diverse areas such as spectroscopy, biomedical imaging, and quantum information.
HIGH POWER LASER SCIENCE AND ENGINEERING
(2022)
Article
Optics
Naoya Kuse, Gabriele Navickaite, Michael Geiselmann, Takeshi Yasui, Kaoru Minoshima
Summary: This study introduces a feedforward signal to increase the scanning speed of a dissipative Kerr-microresonator soliton comb and proposes a method to measure the frequency shift of all comb modes using an imbalanced Mach-Zehnder interferometer with two outputs at different wavelengths.
Article
Optics
Farid Ullah Khan, Aldo Moreno-Oyervides, Oscar Elias Bonilla-Manrique, Pedro Martin-Mateos
Summary: High-performance hyperspectral imaging is in high demand due to its wide range of capabilities. However, traditional systems have limitations in resolving narrow spectral features. In this study, we introduce the first hyperspectral dual-comb imaging system with sub-GHz optical resolutions and fast acquisition rates in the mid-infrared region.
OPTICS AND LASERS IN ENGINEERING
(2023)
Article
Optics
Ting Wang, Ji-Liang Wu, Xu-Cheng Zhang, Yang Shi, Yue-De Yang, Jin-Long Xiao, Da-Ming Zhang, Guan-Shi Qin, Yong-Zhen Huang
Summary: In this paper, we demonstrate the generation of octave-spanning optical frequency combs with a repetition rate of tens of GHz for the first time using a four-wave mixing effect seeded by a dual-mode microcavity laser. Wideband optical frequency combs are generated using a Brillouin nonlinear fiber loop and shaped through optical filtering. The high-repetition-rate pulse train is amplified and compensated for dispersion, resulting in an octave optical comb spanning from 1100 to 2200 nm. We achieve frequency combs with octave bandwidths and repetition rates using dual-mode microcavity lasers.
PHOTONICS RESEARCH
(2022)
Article
Optics
Zeru Wu, Yanfeng Zhang, Shihao Zeng, Jiaqi Li, Yaozu Xie, Yujie Chen, Siyuan Yu
Summary: This study presents low-loss deuterated silicon nitride micro-ring resonators fabricated using back-end CMOS technology, achieving strong confinement micro-ring resonators with quality factors above 2 million without the need for annealing. Furthermore, the generation of low-noise coherent Kerr microcomb states in these resonators demonstrates their potential for linear and nonlinear photonic circuits that can be co-integrated with electronic devices.
News Item
Optics
Jeffrey Moses, Shu-Wei Huang
Summary: Coherent multi-octave mid-infrared waveforms can be generated and manipulated using cascaded intrapulse difference-frequency generation, providing absolute phase control and expanding the techniques available for arbitrary light-wave control.
Article
Nanoscience & Nanotechnology
Lukasz A. Sterczewski, Tzu-Ling Chen, Douglas C. Ober, Charles R. Markus, Chadwick L. Canedy, Igor Vurgaftman, Clifford Frez, Jerry R. Meyer, Mitchio Okumura, Mahmood Bagheri
Summary: Chip-scale optical frequency combs have the potential to be used in broadband spectroscopy and chemical sensing in various fields. By using the Vernier technique, a compact cavity-enhanced chemical sensing system can be realized. The experimental results demonstrate the ability to detect the release of different substances with high resolution and fast response.
Article
Optics
Yuanfeng Di, Zhong Zuo, Daowang Peng, Daping Luo, Chengli Gu, Wenxue Li
Summary: Dual-comb spectroscopy (DCS) has been widely used in various spectroscopic applications due to its high spectral resolution and fast measurement speed. In this study, coherent dual-comb sources covering a wide spectral range from ultraviolet to mid-infrared were generated using high-order harmonic generation. The coherence of the generated dual-comb spectra was well-preserved without apparent degradation.
PHOTONICS RESEARCH
(2023)
Article
Engineering, Electrical & Electronic
Qiang Wu, Lei Gao, Shuai Qiu, Stefan Wabnitz, Ai Liu, Yulong Cao, Zhenghu Chang, Yuanjie Yu, Yu Long, Tao Zhu
Summary: In this paper, an all-optical polarization scrambler configuration based on a polarization beam splitting delayed fiber loop is proposed. The polarization scrambler operates in a chaotic regime by deteriorating the coherence of one beam and controlling the intensity ratio of two orthogonal beams. The effect of loop structure on polarization scrambling is tested using a narrow-linewidth laser and a commercial distributed feedback laser, and the dependence of scrambling speed and average degree of polarization on delay fiber length and wavelengths within the C-band is characterized. The performance of the proposed scrambler for scrambling modulated signals at 40 MHz and 6 GHz is also tested.
JOURNAL OF LIGHTWAVE TECHNOLOGY
(2023)
Article
Engineering, Electrical & Electronic
Mario Ferraro, Fabio Mangini, Yann Leventoux, Alessandro Tonello, Mario Zitelli, Tigran Mansuryan, Yifan Sun, Sebastien Fevrier, Katarzyna Krupa, Denis Kharenko, Stefan Wabnitz, Vincent Couderc
Summary: We introduce and demonstrate all-optical beam switching in graded-index multimode optical fibers. Nonlinear coupling between orthogonally polarized seed and signal beams allows control of the spatial beam quality at the fiber output. We show that a low power control beam can significantly enhance the quality of a high-power multimode signal beam. This concept could be applied in high-power beam delivery and fiber lasers.
JOURNAL OF LIGHTWAVE TECHNOLOGY
(2023)
Article
Optics
S. V. Suchkov, I. S. Chekhovskoy, O. V. Shtyrina, S. Wabnitz, M. P. Fedoruk
Summary: We investigate the linear and nonlinear modes of parity-time (PT)-symmetric multicore fibers with a twist of peripheral cores with gain and loss around the lossless central core. We determine the spectral properties of such a light guiding system and demonstrate that the presence of the lossless central core combined with the fiber twist may significantly change the supermode structure and PT-symmetry breaking threshold of the multicore fiber with gain and loss. We also construct stationary nonlinear modes of the fiber and verify their stability.
OPTICS COMMUNICATIONS
(2023)
Article
Optics
Fabio Mangini, Mario Ferraro, Yifan Sun, Mikhail Gervaziev, Pedro Parra-Rivas, Denis S. Kharenko, Vincent Couderc, Stefan Wabnitz
Summary: Spatial beam self-cleaning in graded-index multimode fibers, arising from the Kerr effect, involves nonlinear power transfer among modes to produce robust bell-shaped output beams. Although spatial coherence of the output beam has been experimentally demonstrated, direct study of modal phase evolutions has been lacking. Using a holographic mode decomposition method, our findings reveal nonlinear spatial phase-locking between the fundamental mode and neighboring low-order modes, confirming theoretical predictions and challenging the current belief of wave thermalization as the sole cause of the spatial beam self-cleaning effect.
Article
Physics, Multidisciplinary
Tobias Hansson, Pedro Parra-Rivas, Stefan Wabnitz
Summary: Researchers developed a model to study the application of frequency combs in the infrared and visible spectral regions, and identified conditions for the existence of two distinct and coexisting cavity solitons.
COMMUNICATIONS PHYSICS
(2023)
Editorial Material
Engineering, Electrical & Electronic
Christophe Caucheteur, Tuan Guo, Francesco Chiavaioli, Carlos Marques, Stefan Wabnitz
OPTICAL FIBER TECHNOLOGY
(2023)
Article
Optics
Francesco Rinaldo Talenti, Yifan Sun, Pedro Parra-Rivas, Tobias Hansson, Stefan Wabnitz
Summary: The impact of chirped driving fields on Kerr cavity breathers and solitons is investigated, and it is found that synchronous phase and amplitude modulation of the pumping field can be used to control soliton dynamics. The use of a phase-modulated super-Gaussian pump is shown to stabilize the oscillations of breathing solitons and generate prescribed temporal intra-cavity patterns. These findings have applications in deterministic generation of optical frequency soliton combs, optical tweezers, and all-optical manipulation of light pulses.
OPTICS COMMUNICATIONS
(2023)
Article
Optics
Yifan Sun, Stefan Wabnitz, Pedro Parra-Rivas
Summary: This study investigates the dynamics of Kerr cavity solitons with intracavity phase modulation in the normal dispersion regime. The introduction of a parabolic potential leads to multimode resonances, which facilitate the formation of high-order bright solitons. Gradually decreasing the potential strength causes the bright solitons to transition into dark solitons. This process is described as a shift from multimode resonance to collapsed snaking bifurcation structure. This work provides a comprehensive overview of cavity dynamics and offers a potential pathway to access multi-stable states by varying the phase modulation effectively.
Article
Optics
Fabio Mangini, Mario Ferraro, Alessandro Tonello, Vincent Couderc, Stefan Wabnitz
Summary: In our experiments, we discover a previously unnoticed power limitation in beam self-cleaning in graded-index nonlinear multimode optical fibers. As the optical pulse power increases, the initial improvement of spatial beam quality is lost due to high-temperature wave thermalization, depleting the fundamental mode and leading to a highly multimode power distribution.
Article
Physics, Multidisciplinary
Yifan Sun, Pedro Parra-Rivas, Carles Milian, Yaroslav Kartashov, Mario Ferraro, Fabio Mangini, Raphael Jauberteau, Francesco R. Talenti, Stefan Wabnitz
Summary: This study presents a general approach to exciting stable dissipative three-dimensional and high-order solitons and breathers in passively driven nonlinear cavities. A paradigmatic example is used to illustrate the findings, showing that three-dimensional solitons or light bullets are the only stable states that exist under specific parameters. This rare property in passive nonlinear systems allows for deterministic formation of target solitons or breathers.
PHYSICAL REVIEW LETTERS
(2023)
Article
Engineering, Electrical & Electronic
Mario Ferraro, Fabio Mangini, Mario Zitelli, Raphael Jauberteau, Yifan Sun, Pedro Parra-Rivas, Katarzyna Krupa, Alessandro Tonello, Vincent Couderc, Stefan Wabnitz
Summary: This study investigates the evolution of polarization state in beam self-cleaning in multimode fibers, revealing its complexity. The research findings verify the validity of theoretical approaches for describing nonlinear propagation in multimode fibers and provide important insights for the application of beam self-cleaning effect.
IEEE PHOTONICS JOURNAL
(2023)
Review
Physics, Multidisciplinary
Mario Ferraro, Fabio Mangini, Mario Zitelli, Stefan Wabnitz
Summary: Spatial beam self-cleaning refers to the transformation of the transverse intensity profile at the output of graded-index multimode optical fibers from speckles into a bell-shaped beam sitting on a low intensity background induced by input power. It has remarkable properties of improving output beam brightness and being robust to fiber bending and squeezing. These properties overcome the limitations of multimode fibers and have great potential for various technological applications.
ADVANCES IN PHYSICS-X
(2023)
Article
Physics, Multidisciplinary
M. Gervaziev, M. Ferraro, E. V. Podivilov, F. Mangini, O. S. Sidelnikov, D. S. Kharenko, M. Zitelli, M. P. Fedoruk, S. A. Babin, S. Wabnitz
Summary: We summarize our recent experimental studies on the nonlinear spatial reshaping of multimode beams at the output of multimode optical fibers. A holographic mode decomposition technique is used to reveal the variation of the spatial mode composition at the fiber output, caused by conservative (the Kerr effect) or dissipative (Raman scattering) nonlinear processes. We investigate the effect of spatial beam self-cleaning and compare experimental results with thermodynamic theory predictions, including beams carrying non-zero orbital angular momentum. Additionally, we analyze the beam mode content at the output of a Raman laser based on a graded index multimode fiber.
OPTOELECTRONICS INSTRUMENTATION AND DATA PROCESSING
(2023)
Article
Physics, Multidisciplinary
M. Zitelli, M. Ferraro, F. Mangini, S. Wabnitz
Summary: We have experimentally and numerically shown that picosecond telecom pulses cannot form a single multimode soliton in a graded-index fiber. This property is beneficial in space-division multiplexed systems for transmitting independent soliton channels that do not merge into a single multimode soliton.
OPTOELECTRONICS INSTRUMENTATION AND DATA PROCESSING
(2023)
Proceedings Paper
Nanoscience & Nanotechnology
Mario Ferraro, Fabio Mangini, Raphael Diaeresis, Mario Zitelli, Yifan Sun, Pedro Parra-Rivas, Katarzyna Krupa, Alessandro Tonello, Vincent Couderc, Stefan Wabnitz
Summary: The study reports on the experimental investigation of the polarization state of light during spatial beam self-cleaning in graded-index multimode fibers. It shows that intense multimode beams with varying degrees of polarization can be obtained under different experimental conditions, extending the applications of the beam self-cleaning effect and providing insights into its physical mechanisms.
2023 IEEE PHOTONICS SOCIETY SUMMER TOPICALS MEETING SERIES, SUM
(2023)
