Title :
Design and realization of long-period grating devices in conventional and high birefringence fibers and their novel applications as fiber-optic load sensors
Author :
Zhang, L. ; Liu, Y. ; Everall, L. ; Williams, J.A.R. ; Bennion, I.
Author_Institution :
Photon. Res. Group, Aston Univ., Birmingham, UK
Abstract :
We report the design and fabrication of long-period fiber gratings with single and cascaded structures in conventional and high birefringence (hi-bi) fibers using amplitude mask and point-by-point writing techniques. We also report a novel application of long-period gratings produced in nonhigh-birefringence fiber as fiber-optic load sensors exhibiting very high transverse strain sensitivity. Sensitivity some 800 times greater than previously reported fiber Bragg grating (FBG) sensors has been achieved
Keywords :
birefringence; diffraction gratings; fibre optic sensors; optical design techniques; optical fibre fabrication; sensitivity; amplitude mask techniques; cascaded structures; conventional fibers; design; fiber Bragg grating sensors; fiber-optic load sensors; hi-bi fibers; high birefringence fibers; long-period fiber gratings; long-period grating devices; long-period gratings; nonhigh-birefringence fiber; novel applications; point-by-point writing techniques; realization; sensitivity; single structures; transverse strain sensitivity; Birefringence; Bragg gratings; Capacitive sensors; Fabrication; Fiber gratings; Optical fiber communication; Optical fiber devices; Optical fiber polarization; Optical fiber sensors; Writing;
Journal_Title :
Selected Topics in Quantum Electronics, IEEE Journal of
DOI :
10.1109/2944.806763
