Molecular immobilization and detection in a photonic crystal fiber

Abstract

Photonic Crystal Fibers (PCF’s) are silica based optical fibers with tiny air running along the length of the fiber. These fibers allows for a close proximity of the light guided in the fiber and molecules positioned in the air holes. The penetration of the optical field into the air holes can be significant [1], making PCF’s potential candidates for sensor applications. In the present work we have used a hollow-core fiber from Crystal Fibre A/S for molecular immobilization and detection of DNA and protein molecules, respectively.