基于多模光纤的光谱分析、射频谱感知及成像技术研究进展

随着信息领域的高速发展,人们对信息感知和处理技术的需求愈加多样,为满足功能需要,同时降低系统成本和复杂度,多功能一体化信息感知处理技术在民用及国防领域愈显重要。多模光纤作为一种能够同时传输多种模式光信号的光纤,早期主要用于短距离光通信领域。近年来,随着研究人员对其复杂物理特性研究的深入,多模光纤由于其宽带、无源、易于制造、低成本、便携等优势,在测量、光计算和图像传输等领域的应用也越来越广泛。本文从技术背景和原理等多个方面梳理了多模光纤在光谱分析、射频谱感知和成像技术三个方面应用的研究现状,阐述了其相对于传统方法的优势,并且指出了多模光纤面向这些特殊领域及一体化应用所面临的挑战及未来发展的趋势。 

Research Progress of Spectral Analysis,RF Spectrum Sensing and Imaging Techniques Based on Multimode Fiber

With the rapid development of the information field, our needs for information perception and processing technology are becoming more and more diverse. In order to meet the functional needs while reducing system cost and complexity, multi-functional integrated information perception and processing technology becomes more and more important in the field of civil and national defense. As a kind of optical fiber that can transmit multiple modes at the same time, multimode fiber was mainly used in the field of short-distance optical communication in the early days. In recent years, with the development of research on its complex physical properties, multi-mode fiber has been widely used in measurement, optical computing and image transmission due to its advantages of broadband, passive, easy to manufacture, low cost and portability. In this paper, the research status of the application of multi-mode fiber in spectral analysis, RF spectrum sensing and imaging technology are reviewed from the aspects of technical background and principle. The advantages of multi-mode fiber over traditional methods are expounded, and the challenges and future development trends of multi-mode fiber for these special fields and integrated applications are pointed out.