Single-polarization fiber with a high extinction ratio

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...

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Bibliographic Details
Published inOptics letters Vol. 29; no. 16; p. 1855
Main Authors Nolan, Daniel A, Berkey, George E, Li, Ming-Jun, Chen, Xin, Wood, William A, Zenteno, Luis A
Format Journal Article
LanguageEnglish
Published United States 15.08.2004
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Summary: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.
ISSN:0146-9592
DOI:10.1364/OL.29.001855