Optical fiber interferometric (OFI) sensors have been extensively used to measure a large variety of parameters due to
their superior performance. The F-P OFI sensors are very sensitive to the cavity-length changes. However, it is difficult
to fix the operating position at the quadrature point (Q point) in the sensor fabrication, and the sensor may also encounter
with various environmental perturbations, which may drive the sensors out of the linear region. For the purpose of
developing a highly-sensitive and reliable OFI vibration sensor, a new method was proposed and demonstrated in our
research. By choosing a short cavity length, we can obtain OFI sensor with large interference period, which is helpful to
avoid the infection of Q point drifting, but the visibility decline problem will arise simultaneously. A tilted diaphragm
method was used to solve this problem in the short cavity length. Theoretical analyses have been performed, and a tilted
diaphragm optical fiber sensor has been fabricated, the result shows a visibility of nearly 100% is realized in a short
cavity about 50μm.
Access to the requested content is limited to institutions that have purchased or subscribe to SPIE eBooks.
You are receiving this notice because your organization may not have SPIE eBooks access.*
*Shibboleth/Open Athens users─please
sign in
to access your institution's subscriptions.
To obtain this item, you may purchase the complete book in print or electronic format on
SPIE.org.
INSTITUTIONAL Select your institution to access the SPIE Digital Library.
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.