title: Single-polarization fiber with a high extinction ratio.
abstract: An elliptical-core hole assisted single-polarization fiber was designed, fabricated, and characterized. Numerical modeling based on the vectorial Maxwell equation reveals the dependence of the single-polarization bandwidth on core delta and air-hole size. Several single-polarization fibers based on this design with their single-polarization operating windows centered between 0.9 and 1.5 microm were successfully demonstrated. A correlation between fiber birefringence and single-polarization operating bandwidth is qualitatively confirmed. A single-polarization bandwidth as high as 55 nm was observed. These fibers also show very high extinction ratios of 60 dB or higher at lengths much shorter than 1 m. Other properties such as the dependence on length of the single-polarization operating window were also measured.
authors.affiliation: Corning Incorporated, Corning, New York 14831, USA. nolanda@corning.com
authors.forename: Daniel A
authors.initials: DA
authors.lastname: Nolan
authors.forename: George E
authors.initials: GE
authors.lastname: Berkey
authors.forename: Ming-Jun
authors.initials: MJ
authors.lastname: Li
authors.forename: Xin
authors.initials: X
authors.lastname: Chen
authors.forename: William A
authors.initials: WA
authors.lastname: Wood
authors.forename: Luis A
authors.initials: LA
authors.lastname: Zenteno