Abstract
Non-conventional core-guided transmission windows within the visible
spectral range are identified in commercial hollow-core photonic crystal fibers
designed to operate at 1550 nm. These windows are likely to be related to
higher-order cladding photonic bandgaps and are found to be highly dependent
on the cladding microstructure, thus being affected by pressure-induced stress/deformation.
20-cm-long fiber samples are then used to demonstrate simple and temperature-independent
hydrostatic pressure sensing with two different setups. While in the first
setup pressure is externally applied to the fiber and results in operation
in the hundreds of ${\rm
kgf}/{\hbox {cm}} ^{2}$ (or tens of MPa) range, the second
setup applies pressure directly to fiber internal microstructure and is sensitive
to pressures down to a fraction of ${\rm
kgf}/{\hbox {cm}} ^{2}$ (hundredths of MPa). The fact that
pressure is directly transduced into transmitted power greatly simplifies
the required sensor interrogation setup.
© 2009 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