Antireflective subwavelength gratings on the end faces of optical fibers fabricated by UV nanoimprint lithography

摘要

Antireflective subwavelength gratings (SWGs) with binary cross-sectional shapes were fabricated on the end faces of optical fibers by using UV nanoimprint lithography. A dedicated UV nanoimprinting machine to press the tip of an optical fiber to a mold was developed. The SWGs with the periods of 700 nm were fabricated at the tips of optical fibers. Their optical characteristics were measured.