Abstract
We demonstrate a compact fiber Mach–Zehnder (MZ) interferometric electric field
sensor by splicing a short section of single mode fiber between two sections of single
mode fibers with a large lateral offset of 62.5 µm, where the propylene
carbonate is filled into the open arm of the interferometer. Based on the Kerr
electro-optic effect of propylene carbonate, the applied intensive transient electric
field can change the refractive index of propylene carbonate, which shifts the
interferometric fringe. The electrical field intensity could be demodulated by
monitoring the fringe shift. In the experiment, high voltages from 10.67 kV to 23.3 kV
are applied to our sensor through parallel-plate electrodes. More than 150 kV/cm
electrical field intensity in the middle place of the parallel-plate electrodes is
measured when the voltage is 23.3 kV, and the sensitivity is ~0.1 w (v/m). Such kind of
safe sensor has good stability, high reproducibility, compact size, lightweight and easy
fabrication, making it attractive for applications in measuring different kinds of
electric field, especially when the measurement space is limited or closed.
© 2013 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