Universidad Carlos III de Madrid, Madrid, Spain.
J Biophotonics. 2011 Mar;4(3):184-92. doi: 10.1002/jbio.201000096. Epub 2011 Jan 18.
We present a non-metallic interferometric silica optical fiber ultrasonic wideband sensor for optoacoustic imaging applications. The ultrasonic sensitivity of this sensor has been characterized over the frequency range from 1 to 10 MHz. A comparative analysis has been carried out between this sensor and an array of piezoelectric transducers using optoacoustic signals generated from an optical absorbent embedded in a tissue mimicking phantom. Also, a two dimensional reconstructed image of the phantom using the fiber interferometric sensor is presented and compared to the image obtained using the Laser Optoacoustic Imaging System, LOIS-64B. The feasibility of our fiber optic based sensor for wideband ultrasonic detection is demonstrated.
我们提出了一种用于光声成像应用的非金属干涉型硅基光纤超声宽带传感器。该传感器的超声灵敏度在 1 至 10MHz 的频率范围内进行了表征。利用嵌入在组织模拟体中的光学吸收剂产生的光声信号，对该传感器和一组压电换能器进行了比较分析。此外，还展示了使用光纤干涉传感器对该体模进行二维重建的图像，并与使用激光光声成像系统 LOIS-64B 获得的图像进行了比较。实验结果表明，我们的基于光纤的传感器在宽带超声检测方面具有可行性。
