基于多窗口识别的多波长光信号峰值实时检测系统  

Real-time peak detection system for multi-wavelength optical signals based on multi-window recognition

作　　者：张康 姜海明 谢康 Zhang Kang;Jiang Haiming;Xie Kang(State Key Laboratory of Precision Electronic Manufacturing Technology and Equipment,School of Electromechanical Engineering,Guangdong University of Technology,Guangzhou 510006,China)

机构地区：[1]广东工业大学机电工程学院精密电子制造技术与装备国家重点实验室,广东广州510006

出　　处：《红外与激光工程》2024年第5期198-207,共10页Infrared and Laser Engineering

基　　金：国家自然科学基金项目(500180045)。

摘　　要：波分复用(Wavelength Division Multiplexing,WDM)作为光纤通信系统的核心技术之一,为多个波长光信号的复用和传输提供了强有力的解决方案,对复用光信号的解复用和识别是WDM系统需解决的重要问题之一。文中研制了一种针对多波长光信号峰值的实时检测系统,用于实时检测多波长光信号的峰值功率。首先,设计并研制了光纤法布里-珀罗可调谐滤波器(FFP-TF)的驱动控制器和微弱光信号探测器,分别控制FFP-TF的驱动电压使其滤出特定波长的光信号和对滤出光信号的功率进行实时探测;其次,对于光电探测器中实时探测的光信号功率,设计了一种基于多窗口识别的峰值检测方法,使用三个针对波形不同位置的数据筛选窗口,根据实时检测数据来识别波形的变化趋势从而得到峰值强度与位置,进而计算出对应的光信号峰值强度。实验结果显示,所研制的实时检测系统实现了对多波长光信号的实时检测以及峰值的识别,光信号检测强度范围为0~-60 dBm,识别速度较快,对于准周期或周期的多波长光信号的识别具有良好的识别效果。Objective Wavelength Division Multiplexing(WDM)is one of the core technologies in fiber optic communication system.In WDM system,a number of optical signals with different wavelengths are transmitted simultaneously in a single optical fiber,realizing the multiplexing of the optical signals,and solving a series of problems in large-capacity,high-speed data transmission.At the receiving end of WDM system,the multiplexed optical signals are demultiplexed into a series of single wavelength optical signals,then further detected and identified to usually obtain the peak values of the signals for the next applications.Generally,the peak value of the target single-wavelength optical should be detected and identified in real time.For this purpose,we designed and developed a real-time peak detection system for multi-wavelength optical signals based on multi-window recognition,which realizes the detection and recognition of the peaks for the multi-wavelength optical signals.Methods This work proposes a real-time peak detection system for multi-wavelength optical signals based on multi-window recognition.The optical demultiplexing part uses an Fiber Fabry-Perot Tunable Filter(FFP-TF)to filter out the target single-wavelength signal from the multiple-wavelength optical signals.The driving and controlling circuit of FFP-TF and the low-noise weak optical signal conversing and detecting circuit are designed.The former is used to drive and control the FFP-TF to filter out the optical signals of the target wavelengths and the latter detects and converts the power intensity of the optical signals in real time.The detected optical signal power is converted into voltage intensity.Then the peak position and intensity in the voltage waveform are identified by using a method based on multi-window waveform identification.At last,the corresponding peak intensity and wavelength position of the optical signal waveform is obtained.The system realizes the filtering of the target wavelength optical signal,and the detecting and identifying of t

关 键 词：光纤通信 信号峰值检测系统 光信号探测 法布里-珀罗可调谐滤波器 波分复用技术 

分 类 号：TN29[电子电信—物理电子学]