Abstract
We propose and demonstrate a novel distributed sensor based on coherent
interaction of the Brillouin gain and loss via optical differential parametric
amplification (ODPA), which provides narrowed parametric Brillouin gain spectrum, strong
Brillouin signal via differential gain, and short measurement time simultaneously. In
experiment, a 0.5 m spatial resolution with a strain accuracy of $6\ \mu \varepsilon$ is
realized by using 20/15 ns Stokes and anti-Stokes pulse pair in a 15 m
polarization-maintaining fiber. The spectrum narrowing phenomenon in ODPA Brillouin
sensor is discussed.
© 2010 IEEE
PDF Article
More Like This
Cited By
You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.
Contact your librarian or system administrator
or
Login to access Optica Member Subscription