We propose and experimentally demonstrate a Brillouin optical correlation domain reflectometry system with double frequency modulation and phase modulation. Double frequency modulation onto the laser is used for expanding the measurement range, and phase modulation onto the reference lightwave is used for reducing background noise to enhance resolution and strain dynamic range. A section with 15 cm length and 7000 micro-strain was detected in 1250 m single mode fiber with 5.2 cm nominal spatial resolution.
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.