光纤相敏光放大器及其应用

IF 25.2 1区 物理与天体物理 Q1 OPTICS Advances in Optics and Photonics Pub Date : 2020-06-30 DOI:10.1364/aop.382548
P. Andrekson, M. Karlsson
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引用次数: 32

摘要

在入射光子的能量不变(弹性散射)的非线性过程中,光学参数放大器依赖于二阶磁化率(三波混频)或三阶磁化率。在后一种情况下,两个泵浦光子被转换为信号和空闲光子。在某些条件下,与所涉及的波的相位演变有关,这种转换可能非常有效,导致输入信号的大幅度放大。由于非线性过程可能非常快,除了纯放大之外,全光应用也是可能的。如果放大器以光学输入相位敏感的方式实现,则可以在没有过量噪声的情况下放大信号波,即具有0dB的噪声系数。在本文中,我们将提供这种放大器的基本概念和理论,重点是它们在依赖于四波混频的高度非线性光纤中的实现。我们将讨论相位不敏感和相位敏感操作之间的区别,并包括几个实验结果来说明它们的能力。还讨论了参数放大器的不同应用,包括它们在光通信链路中的应用。
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Fiber-based phase-sensitive optical amplifiers and their applications
Optical parametric amplifiers rely on second-order susceptibility (three-wave mixing) or third-order susceptibility (four-wave mixing) in a nonlinear process where the energy of incoming photons is not changed (elastic scattering). In the latter case, two pump photons are converted to a signal and to an idler photon. Under certain conditions, related to the phase evolution of the waves involved, this conversion can be very efficient, resulting in large amplification of an input signal. As the nonlinear process can be very fast, all-optical applications aside from pure amplification are also possible. If the amplifier is implemented in an optical input-phase-sensitive manner, it is possible to amplify a signal wave without excess noise, i.e., with a noise figure of 0 dB. In this paper, we will provide the fundamental concepts and theory of such amplifiers, with a focus on their implementation in highly nonlinear optical fibers relying on four-wave mixing. We will discuss the distinctions between phase-insensitive and phase-sensitive operation and include several experimental results to illustrate their capability. Different applications of parametric amplifiers are also discussed, including their use in optical communication links.
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来源期刊
CiteScore
56.60
自引率
0.00%
发文量
13
期刊介绍: Advances in Optics and Photonics (AOP) is an all-electronic journal that publishes comprehensive review articles and multimedia tutorials. It is suitable for students, researchers, faculty, business professionals, and engineers interested in optics and photonics. The content of the journal covers advancements in these fields, ranging from fundamental science to engineering applications. The journal aims to capture the most significant developments in optics and photonics. It achieves this through long review articles and comprehensive tutorials written by prominent and respected authors who are at the forefront of their fields. The journal goes beyond traditional text-based articles by enhancing the content with multimedia elements, such as animation and video. This multimedia approach helps to enhance the understanding and visualization of complex concepts. AOP offers dedicated article preparation and peer-review support to assist authors throughout the publication process. This support ensures that the articles meet the journal's standards and are well-received by readers. Additionally, AOP welcomes comments on published review articles, encouraging further discussions and insights from the scientific community. In summary, Advances in Optics and Photonics is a comprehensive journal that provides authoritative and accessible content on advancements in optics and photonics. With its diverse range of articles, multimedia enhancements, and dedicated support, AOP serves as a valuable resource for professionals and researchers in these fields.
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