Line-plane-switching infrared bundle for push-broom sensing fiber imaging

摘要

We reported line-plane-switching infrared (IR) fiber bundle with high-resolution of 0.027 μm~(-1), small numerical aperture (AM) of 0.20 (±0.02), high filling-factor, and bending radius of around 5.0 mm, i.e. extremely good flexibility. This fiber bundle is made from chalcogenide glass fibers, possessing core (As_(40)S_(58)Se_2) of 45 μm, cladding (As_(40)S_(60)) of 50 μm, and error of 1% in diameter. Based on the lens used to demonstrate IR push-broom imaging, the format of matching fiber bundle we chose is 64 × 9 in system to implement 192 × 3 format linear array imaging. By principle-demonstrating system incorporated this fiber bundle coupled with small scale Infrared Focal Plane Array (IRFPA), wide-field and long-array IR push-broom image was successfully demonstrated.