Application of Acoustic Horns for the Amplification of Fiber Optic Vector Hydrophone Signal

2021 ◽  
Author(s):  
Kang Lou ◽  
Cheng-Yan Peng ◽  
Wu-Sheng Tang ◽  
Zheng-Liang Hu ◽  
Pan Xu ◽  
...  
Keyword(s):  
Fiber Optic ◽  
Vector Hydrophone ◽  
Acoustic Horns

Simulation and Measurement of an Acceleration Sensitivity for a Fiber-optic Vector Hydrophone System

2021 ◽  
Author(s):  
Jiangfei Hu ◽  
Duanming Li ◽  
Song Ge ◽  
Minxue Gu ◽  
Ruixuan Qu
Keyword(s):  
Fiber Optic ◽  
Vector Hydrophone

An experimental sonobuoy system based on fiber optic vector hydrophone

2016 ◽  
Author(s):  
Wen Liu ◽  
Jun Wang ◽  
Jing Zhu ◽  
Yanqun Wu ◽  
Lina Ma ◽  
...  
Keyword(s):  
Fiber Optic ◽  
Vector Hydrophone

A Three-Dimentional Vector Hydrophone Based on Fiber-Optic Flexural Disk Accelerometer

2015 ◽  
Vol 42 (3) ◽  
pp. 0305004 ◽  
Author(s):  
金梦群 Jin Mengqun ◽  
张自丽 Zhang Zili ◽  
吴国军 Wu Guojun ◽  
葛辉良 Ge Huiliang
Keyword(s):  
Fiber Optic ◽  
Vector Hydrophone

scholarly journals Recent Progress in Fiber-Optic Hydrophones

2021 ◽  
Vol 11 (1) ◽  
pp. 109-122
Author(s):  
Zhou Meng ◽  
Wei Chen ◽  
Jianfei Wang ◽  
Xiaoyang Hu ◽  
Mo Chen ◽  
...  
Keyword(s):  
Large Scale ◽  
Recent Progress ◽  
Fiber Optic ◽  
Low Frequency ◽  
Research Field ◽  
Practical Applications ◽  
Frequency Detection ◽  
Vector Hydrophone ◽  
Oil And Natural Gas ◽  
Underwater Target

AbstractFiber-optic hydrophone (FOH) is a significant type of acoustic sensor, which can be used in both military and civilian fields such as underwater target detection, oil and natural gas prospecting, and earthquake inspection. The recent progress of FOH is introduced from five aspects, including large-scale FOH array, very-low-frequency detection, fiber-optic vector hydrophone (FOVH), towed linear array, and deep-sea and long-haul transmission. The above five aspects indicate the future development trends in the FOH research field, and they also provide a guideline for the practical applications of FOH as well as its array.

Imaging and diffraction modes in Scanning Transmission Electron Microscopy

1986 ◽  
Vol 44 ◽  
pp. 684-687
Author(s):  
J. M. Cowley ◽  
R. Glaisher ◽  
J. A. Lin ◽  
H.-J. Ou
Keyword(s):  
Scanning Transmission Electron Microscopy ◽  
High Efficiency ◽  
Fiber Optic ◽  
Image Intensifier ◽  
Detector System ◽  
Detector Plane ◽  
Secondary Electrons ◽  
Transmission Electron ◽  
Scanning Transmission ◽  
Special Detector

Some of the most important applications of STEM depend on the variety of imaging and diffraction made possible by the versatility of the detector system and the serial nature, of the image acquisition. A special detector system, previously described, has been added to our STEM instrument to allow us to take full advantage of this versatility. In this, the diffraction pattern in the detector plane may be formed on either of two phosphor screens, one with P47 (very fast) phosphor and the other with P20 (high efficiency) phosphor. The light from the phosphor is conveyed through a fiber-optic rod to an image intensifier and TV system and may be photographed, recorded on videotape, or stored digitally on a frame store. The P47 screen has a hole through it to allow electrons to enter a Gatan EELS spectrometer. Recently a modified SEM detector has been added so that high resolution (10Å) imaging with secondary electrons may be used in conjunction with other modes.

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