PA Fibre-optic hydrophones 光纤水听器

Precision Acoustics Fibre-optic hydrophones 光纤水听器

The best instrument available to measure close to the face of the ultrasound transducer, make CW measurements or to measure the acoustic pressure and associated thermal effects of a high-intensity field.

Precision Acoustics光纤水听器 用于测量靠近超声换能器表面、进行 CW 测量，或测量高强度磁场的声压及相关热效应。

Overview 概述

The new fibre-optic hydrophone system is now available and features all the existing functions of its predecessor but with some notable improvements. These include a change to a more robust connector type that will improve the reliability of the system and provide the user a quicker setup before measurements with a simple ‘click in’ sensor input and less frequently required cleaning. Functionally, the system is now driven by an updated laser module with a wider tuning range which in turn will permit a greater range of temperature measurements. Furthermore, the system has a much improved software user interface.

新的光纤水听器系统现已投入使用，具备前代的所有功能，但有一些显著改进。这些改进包括更换更坚固的连接器类型，提升系统的可靠性，并为用户在测量前提供更快捷的设置，只需简单的“点击”传感器输入，清洁频率降低。在功能上，系统由更新的激光模块驱动，调节范围更广，从而支持更广泛的温度测量范围。此外，系统拥有大幅改进的软件用户界面。

For more information see the paper “A Fabry–Pérot fiber-optic ultrasonic hydrophone for the simultaneous measurement of temperature and acoustic pressure” in J. Acoust. Soc. Am, Vol. 125, No. 6, page 3611, June 2009.

更多信息请参见《法布里-佩罗光纤超声波水听器用于同时测量温度和声压》一文，刊载于《声学杂志》。Soc. Am，第 125 卷，第 6 期，第 3611 页，2009 年 6 月。

The fibre optic hydrophone is the latest addition to our hydrophone range. Despite its 10 um active diameter the sensitivity is similar to larger element needle hydrophones. This, coupled with, its immunity from electro-magnetic radiation makes it particularly suited for high frequency measurements in hostile fields.

光纤水听器是我们水听器系列中的新成员。尽管其活性直径为10微米，但灵敏度与较大元件的针式水听器相似。这一点，加上其对电磁辐射的免疫性，使其特别适合在敌对场中进行高频测量。

The system can be used in high intensity fields where needle or membrane hydrophones may experience serious damage. Replacement fibres are readily available and inexpensive.

该系统可用于高强度场域，针或膜水听器可能遭受严重损伤。替代纤维很容易获得且价格低廉。

The hydrophone can be used to measure temperature and pressure, at the same time, and at the same point in the field. This enables a direct correlation to be made between pressure and thermal change.

水听器可以同时测量现场同一点的温度和压力。这使得压力与热变化之间能够直接关联。

The fibre-optic hydrophone system is supplied with tapered tipped sensors which are optimised for optimal frequency response.

光纤水听器系统配备了锥形尖端传感器，经过优化以实现最佳频率响应。