Tailoring nonlinear interactions in highly-multimode fibers for versatile light sources

为多功能光源定制高度多模光纤中的非线性相互作用

• 批准号: 1711230
• 负责人: Rodrigo Amezcua-Correa
• 金额: $ 36万
• 依托单位: The University of Central Florida Board of Trustees
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2017
• 资助国家: 美国
• 起止时间: 2017-07-15 至 2022-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1711230&HistoricalAwards=false
• 关键词: Tailoring; nonlinear; interactions; highly; multimode

Title: Fiber Light Sources Based on Multimode Generation and AmplificationNon-Technical Description:The past 25 years have witnessed a number of impressive advancements in the general field of fiber optics. These breakthroughs have not only enabled a widespread proliferation of the Internet, but have also radically transformed industrial manufacturing, laser surgery, optical microscopy and sensing, to mention a few. Fiber lasers represent yet another field that has experienced striking growth during this same period. What made this class of lasers so successful is their remarkable power scalability, spectral and temporal versatility, high efficiency and their ability to be integrated into robust and modular systems. Unfortunately, as with most technologies that experienced a sudden progress in capabilities, it will not be long before physical constraints appear on the horizon to dampen future progress. Indeed, nonlinear limits and damage thresholds of existing fibers are now being approached, imposing restrictions on the maximum pulse energies/power one could expect from current fiber based light sources. This work aims to overcome these limitations by exploiting the physics and complexity of nonlinear dynamics in highly multimode fiber structures. Alternative strategies are to be developed for designing new versatile light sources that outperform existing systems by orders of magnitude in terms of output power and spectral densities delivered. Education is an integral component of this research effort. Due to the interdisciplinary nature of the proposed work, the students engaged in this project will have the opportunity to experience all the steps in the research. This involves starting from ideas that originate from theoretical models to experimentally demonstrations of the anticipated behavior to finally producing a prototype fiber light source.Technical Description:The goal of this research effort is to systematically explore the possibility of using nonlinear multimode fibers in two areas where current single mode approaches are still in need of a solution: (i) ultra-high spectral density, multi-octave supercontinuum sources with customized frequency and modal content and (ii) power-scalable, low-cost multimode fiber structures for pulsed amplification. This will be accomplished by devising strategies to preferentially excite particular mode groups and by developing ytterbium-based fiber amplifiers with low differential modal gain. Of special interest will be to alter on demand the generated supercontinuum spectrum, from ultra-violet to mid-infrared. In this respect, photonic lanterns, chaotic fibers with appropriately engineered transverse index profiles, and longitudinally varying taper configurations will be fabricated to encourage frequency generation in specific bands. Moreover, the prospect for generating chirped parabolic pulses in normally dispersive multimode fibers will be considered. Of particular importance will be to develop theoretical models that can either predict or explain processes in nonlinear multimode fibers, for example mode condensation, that still remain largely unexplored. From a theoretical perspective, the interplay between nonlinearity and chaos as a means to homogenize the supercontinuum is still an important problem that will be investigated. The realization of fiber structures that are prone to chaos could provide an experimental platform that can be utilized to observe and study the intricate connection between classical and wave chaos. The use of these notions in photonics could establish a new paradigm in molding and controlling optical propagation in nonlinear multimode environments and will help develop alternative methodologies in designing novel classes of fiber-based sources. The cross-fertilization of these ideas is expected to lead to advances in both photonics and nonlinear physics.

职务名称：基于多模产生和放大的光纤光源非技术描述：在过去的25年里，光纤光学领域取得了许多令人印象深刻的进步。这些突破不仅使互联网得以广泛普及，而且还从根本上改变了工业制造、激光手术、光学显微镜和传感等领域。光纤激光器代表了另一个在同一时期经历了惊人增长的领域。这类激光器之所以如此成功，是因为它们具有卓越的功率可扩展性、光谱和时间多功能性、高效率以及集成到强大的模块化系统中的能力。不幸的是，与大多数在能力上经历了突然进步的技术一样，不久之后，物理限制就会出现，从而抑制未来的进步。实际上，现有光纤的非线性极限和损伤阈值现在正在接近，对人们可以从当前基于光纤的光源预期的最大脉冲能量/功率施加限制。这项工作的目的是克服这些限制，利用物理和复杂的非线性动力学在高度多模光纤结构。将开发替代策略来设计新的多功能光源，这些光源在输出功率和光谱密度方面优于现有系统。教育是这项研究工作的一个组成部分。由于拟议工作的跨学科性质，参与该项目的学生将有机会体验研究的所有步骤。这包括从理论模型出发的想法，到预期行为的实验演示，再到最终生产出原型光纤光源。技术描述：这项研究工作的目标是系统地探索在两个领域使用非线性多模光纤的可能性，这两个领域目前的单模方法仍然需要解决方案：（i）具有定制频率和模态内容的超高谱密度、多倍频程超连续谱源，以及（ii）功率可缩放，用于脉冲放大的低成本多模光纤结构。这将通过设计优先激发特定模式群的策略和开发具有低差分模式增益的镱基光纤放大器来实现。特别令人感兴趣的将是根据需要改变所产生的超连续光谱，从紫外到中红外。在这方面，光子灯笼，混沌光纤与适当的工程横向折射率分布，和纵向变化的锥形配置将被制造，以鼓励在特定波段的频率产生。此外，还讨论了在正常色散多模光纤中产生啁啾抛物脉冲的前景。特别重要的是开发理论模型，可以预测或解释非线性多模光纤中的过程，例如模式凝聚，这在很大程度上仍然是未开发的。从理论的角度来看，非线性和混沌之间的相互作用作为一种手段，均匀化的超连续谱仍然是一个重要的问题，将被调查。实现易于发生混沌的纤维结构可以提供一个实验平台，用于观察和研究经典混沌和波动混沌之间的复杂联系。在光子学中使用这些概念可以建立一个新的模式，在非线性多模环境中的成型和控制光传播，并将有助于开发替代方法，在设计新的类基于光纤的源。这些想法的相互促进有望导致光子学和非线性物理学的进步。

项目成果

Observation of Aharonov-Bohm Suppression of Optical Tunneling in Twisted Multicore Fibers

双绞多芯光纤中光隧道阿哈罗诺夫-玻姆抑制的观察

• DOI: 10.1364/cleo_qels.2018.fm1e.2
• 发表时间: 2018
• 期刊: CLEO: QELS Fundamental Science 2018
• 作者: Parto, M.;Lopez-Aviles, H.;Antonio-Lopez, J. E.;Alvarado Zacarias, J. C.;Khajavikhan, M.;Amezcua-Correa, R.;Christodoulides, D. N.
• 通讯作者: Christodoulides, D. N.

Accelerated nonlinear interactions in graded-index multimode fibers

• DOI: 10.1038/s41467-019-09687-9
• 发表时间: 2019-04-09
• 期刊: NATURE COMMUNICATIONS
• 影响因子: 16.6
• 作者: Eftekhar, M. A.;Sanjabi-Eznaveh, Z.;Christodoulides, D. N.
• 通讯作者: Christodoulides, D. N.

Polarization-resolved second-harmonic generation imaging through a multimode fiber

• DOI: 10.1364/optica.430295
• 发表时间: 2021-08-20
• 期刊: OPTICA
• 影响因子: 10.4
• 作者: Cifuentes, Angel;Pikalek, Tomas;Tragardh, Johanna
• 通讯作者: Tragardh, Johanna

SDM Fibers and Devices: Design, Manufacturing, and Applications

SDM 光纤和器件：设计、制造和应用

• DOI: 10.1364/ofc.2021.w7b.5
• 发表时间: 2021
• 期刊: Optical Fiber Communication Conference (OFC
• 作者: Antonio-Lopez, J. Enrique;Alvarado-Zacarias, J. Carlos;Wittek, Steffen;Cruz-Delgado, Daniel;Martinez-Mercado, Julian
• 通讯作者: Martinez-Mercado, Julian

Statistical mechanics of weakly nonlinear optical multimode gases

• DOI: 10.1364/ol.387863
• 发表时间: 2020-04-01
• 期刊: OPTICS LETTERS
• 影响因子: 3.6
• 作者: Makris, Konstantinos G.;Wu, Fan O.;Christodoulides, Demetrios N.
• 通讯作者: Christodoulides, Demetrios N.