Fiber-optic hydrophone with increased sensitivity

Ke Guo; Min Zhang; Yanbiao Liao; Shurong Lai; Zehan Wang; Jin Tang

doi:10.1117/12.679772

14 August 2006 Fiber-optic hydrophone with increased sensitivity

Ke Guo, Min Zhang, Yanbiao Liao, Shurong Lai, Zehan Wang, Jin Tang

Proceedings Volume 6293, Interferometry XIII: Applications; 629312 (2006) https://doi.org/10.1117/12.679772
Event: SPIE Optics + Photonics, 2006, San Diego, California, United States

Abstract

This article is about some results of the research for increasing the phase-shift sensitivity of fiber-optic hydrophone. Many factors that affect the sensitivity are discussed, including the structure of the hydrophone sensor, the substrate of the fiber and the composite structure of the fiber. The framework of the hydrophone sensor is enwound by the fiber of the reference arm of the interferometer; out of this an inner lining is used with the fiber of the signal arm enwound on it. The fiber has a composite structure. From inner to exterior there are the core, the cladding and the substrate. The thickness of the substrate has an effect on the phase-shift sensitivity of the hydrophone. Outside the sensor we spread a kind of elastic material that is sound non-transparent. This material can protect the fiber of the signal arm. It can also be regarded as the substrate of the fiber, so the thickness of the material can affect the phase-shift sensitivity of the hydrophone. The theory analysis and the experiment measurement have been made in detail in this article. And the result is that 1mm of Teflon can raise the phase-shift sensitivity by 10dBrad/Pa.

Citation Download Citation

Ke Guo, Min Zhang, Yanbiao Liao, Shurong Lai, Zehan Wang, and Jin Tang "Fiber-optic hydrophone with increased sensitivity", Proc. SPIE 6293, Interferometry XIII: Applications, 629312 (14 August 2006); https://doi.org/10.1117/12.679772

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available