光学学报, 2017, 37 (4): 0406001, 网络出版: 2017-04-10   

分布反馈式光纤激光水听器的声压灵敏度频率响应特性 下载: 561次

Frequency Response Characteristics of Sound Pressure Sensitivity of Distributed Feedback Fiber Laser Hydrophone
作者单位
海军工程大学兵器工程系, 湖北 武汉 430033
摘要
光纤激光水听器的频率响应曲线会在声压传递函数的谐振频率处出现谐振峰,使水听器的工作频带变窄。研制了一种金属膜片端面增敏结构的分布反馈式(DFB)光纤激光水听器。基于电声类比理论,建立了DFB光纤激光水听器的声压传递函数模型,仿真分析了水听器各结构参数对水听器声压传递函数的影响,实现了水听器结构的优化设计,加工制作了水听器原型样品并进行了实验研究。由实验结果可知,DFB光纤激光水听器在2.5~10 kHz 频率范围内的平均声压灵敏度为-135.99 dB,波动幅度小于±0.6 dB,且在16 kHz附近出现谐振峰,实验结果与仿真分析结果较好地吻合。该研究对DFB光纤激光水听器的研制具有重要指导意义。
Abstract
Some resonant peaks in the frequency response curve of fiber laser hydrophone appear at the resonant frequency of sound pressure transfer function, which makes the working frequency band narrow. A distributed feedback (DFB) fiber laser hydrophone is designed with a sensitivity enhanced mental diaphragm structure. A sound pressure transfer function model of the DFB fiber laser hydrophone is established based on electro-acoustic theory. The influence of structural parameters of hydrophone on sound pressure transfer function is simulated, and the structure of hydrophone is optimized. Prototypes of hydrophones are fabricated and tested experimentally. The experimental results show that the average sound pressure sensitivity of the DFB fiber laser hydrophone can reach to -135.99 dB with the fluctuation range within ±0.6 dB in the frequency range of 2.5-10 kHz, and the resonant peak appears near the frequency of 16 kHz. The experimental results agree well with the simulation results. The study is of great guiding significance for the development of DFB fiber laser hydrophone.

唐波, 黄俊斌, 顾宏灿, 毛欣. 分布反馈式光纤激光水听器的声压灵敏度频率响应特性[J]. 光学学报, 2017, 37(4): 0406001. Tang Bo, Huang Junbin, Gu Hongcan, Mao Xin. Frequency Response Characteristics of Sound Pressure Sensitivity of Distributed Feedback Fiber Laser Hydrophone[J]. Acta Optica Sinica, 2017, 37(4): 0406001.

本文已被 5 篇论文引用
被引统计数据来源于中国光学期刊网
引用该论文: TXT   |   EndNote

相关论文

加载中...

关于本站 Cookie 的使用提示

中国光学期刊网使用基于 cookie 的技术来更好地为您提供各项服务,点击此处了解我们的隐私策略。 如您需继续使用本网站,请您授权我们使用本地 cookie 来保存部分信息。
全站搜索
您最值得信赖的光电行业旗舰网络服务平台!