title: Highly birefringent hollow-core photonic bandgap fiber.
abstract: A hollow-core photonic band-gap fiber with very high group birefringence is fabricated and characterized. Two independent methods, wavelength scanning and direct measurement of differential group delay (DGD), are used to obtain the group beatlength and group birefringence. The fiber illustrates a very high group birefringence of 0.025 at 1550 nm. The wavelength dependence of the group beatlength and group birefringence are also analyzed.
authors.forename: Xin
authors.initials: X
authors.lastname: Chen
authors.forename: Ming-Jun
authors.initials: MJ
authors.lastname: Li
authors.forename: Natesan
authors.initials: N
authors.lastname: Venkataraman
authors.forename: Michael
authors.initials: M
authors.lastname: Gallagher
authors.forename: William
authors.initials: W
authors.lastname: Wood
authors.forename: Alana
authors.initials: A
authors.lastname: Crowley
authors.forename: Joel
authors.initials: J
authors.lastname: Carberry
authors.forename: Luis
authors.initials: L
authors.lastname: Zenteno
authors.forename: Karl
authors.initials: K
authors.lastname: Koch