title: Bending insensitivity of fiber Bragg gratings in suspended-core optical fibers.
abstract: This Letter presents simulation and experimental results that explore bending insensitivity of fiber Bragg gratings in suspended-core optical fibers. The implementation of thin silica bridge in the fibers enhances index contrast of the fiber core and reduces bending-induced strain transfer to the fiber core. This fiber design lead to a reduction of over 7 times in strain-induced fiber Bragg grating resonant peak shifts in the suspended-core fiber compared with that in standard telecommunication fiber, and an 0.14 dB bending loss at a bending radius of 6.35 mm.
authors.affiliation: Department of Electrical and Computer Engineering, University of Pittsburgh, 3700 O’Hara Street, Pittsburgh, Pennsylvania 15261, USA.
authors.forename: Charles M
authors.initials: CM
authors.lastname: Jewart
authors.forename: Tong
authors.initials: T
authors.lastname: Chen
authors.forename: Eric
authors.initials: E
authors.lastname: Lindner
authors.forename: Julia
authors.initials: J
authors.lastname: Fiebrandt
authors.forename: Manfred
authors.initials: M
authors.lastname: Rothhardt
authors.forename: Kay
authors.initials: K
authors.lastname: Schuster
authors.forename: Jens
authors.initials: J
authors.lastname: Kobelke
authors.forename: Hartmut
authors.initials: H
authors.lastname: Bartelt
authors.forename: Kevin P
authors.initials: KP
authors.lastname: Chen