Harnessing the vector modes of multimode optical fibers

利用多模光纤的矢量模式

• 批准号: RGPIN-2015-04463
• 负责人: Ung, Bora
• 金额: $ 1.75万
• 依托单位: École de technologie supérieure
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2019
• 资助国家: 加拿大
• 起止时间: 2019-01-01 至 2020-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=679759
• 关键词: Harnessing; vector; modes; multimode; optical

Optical fibers have had a profound impact on civilization by making the Internet revolution possible and, more recently, by opening new forays as remote sensors, illumination sources, biomedical probes and optical tweezers, among others. Light propagation in optical fibers is mediated by spatial modes. The classical scalar modes, although representing approximate descriptions, are still primarily used today because of its adequate accuracy for most applications that depend on singlemode fibers. Beneath this monotonous landscape lies a teeming diversity of vector modes supported by multimode fibers. Vector modes represent the true modes of an optical fiber, but have been largely disregarded so far due to technological limitations in their selective excitation, propagation and detection. Recent advances on all fronts have brought the prospect of harnessing the vector modes towards transformative science and photonic technologies. This is the stated long-term aim of this proposal. More specifically, the proposal identifies three main objectives to follow:***     -  Investigate the underlying fundamental science that governs the behavior and properties of vector modes in multimode fibers***     -  Develop advanced methods for the excitation, characterization, modulation and detection of vector modes***     -  Develop novel multimode fiber designs, material compositions and photonic components engineered for the precise steering and shaping of vector modes******In order to push forward the science of vector modes we need to find new ways to selectively excite, propagate and shape the vector modes by taking advantage of the many light-matter interactions available. The program identifies four promising angles of research to pursue along with clear paths of investigation for each:****     A)  Specialty multimode fibers***     B)  Optoelectronic interactions***     C)  Magneto-optical and magneto-physical interactions***     D)  Acousto-optic interactions***The first goal of this proposal is the creation, at the end of a five-year plan, of a state-of-the-art internationally recognized research laboratory at the forefront of the science of vector modes and their applications. The key notion behind this proposal is that vector modes represent the basic building blocks with which all the possible ways of shaping light propagation in optical fibers can be devised. By conducting research in vector modes we thus improve our understanding and control of light-matter interactions in optical fibers on the most fundamental level. This important realization opens the prospect of groundbreaking scientific discoveries and for using special optical fibers in a multiplicity of modalities and applications not imagined before. This leads us to the second long-term goal of the proposal which is the transfer of the generated science and methods towards practical uses in industry and medicine, and their leverage in neighboring spheres of science.**

光纤使互联网革命成为可能，并在最近开辟了远程传感器、照明源、生物医学探针和光镊等新领域，从而对文明产生了深远的影响。光纤中的光传播由空间模式介导。经典标量模式虽然代表了近似描述，但目前仍主要使用，因为它对于大多数依赖单模光纤的应用来说具有足够的精度。在这种单调的景观之下，存在着由多模光纤支持的丰富多样的矢量模式。矢量模式代表光纤的真实模式，但由于其选择性激发、传播和检测方面的技术限制，迄今为止已被很大程度上忽视。最近各方面的进展带来了利用矢量模式实现变革性科学和光子技术的前景。这是该提案所明确的长期目标。更具体地说，该提案确定了要遵循的三个主要目标：***    - 研究控制多模光纤中矢量模式的行为和属性的基础科学***    - 开发用于矢量模式的激励、表征、调制和检测的先进方法***    - 开发新颖的多模光纤设计、材料成分和光子组件，用于矢量的精确控制和整形 模式*****为了推动矢量模式科学的发展，我们需要找到新的方法，通过利用许多可用的光与物质相互作用来选择性地激发、传播和塑造矢量模式。该计划确定了四个有希望的研究角度，并为每个角度提供了明确的研究路径：****     A) 特种多模光纤***    B) 光电相互作用***   C) 磁光和磁物理相互作用***   D) 声光相互作用***该提案的第一个目标是在五年计划结束时创建一个国际公认的最先进的 研究实验室位于矢量模式及其应用科学的前沿。该提议背后的关键概念是矢量模式代表了基本构建块，通过它可以设计出在光纤中塑造光传播的所有可能方式。通过对矢量模式进行研究，我们从根本上提高了对光纤中光与物质相互作用的理解和控制。这一重要认识开启了突破性科学发现的前景，并为在以前无法想象的多种模式和应用中使用特殊光纤开辟了前景。这使我们实现了该提案的第二个长期目标，即将产生的科学和方法转化为工业和医学的实际用途，并在邻近的科学领域发挥作用。**