The fast axis collimator is a simple cylindrical lens, which was generally applied in optical fiber coupling laser. The optical power coupling efficiency was improved by the beam collimation at fast axis divergence angle. Photonstream developed a fiber level FAC with 2-sides anti-reflective thin film coated. This is an innovated solution for compact high power laser package product. The Ø63um or 200/220um fiber are fixed parallel to the fixture and coating 2-sides. Customer then divides the long lens into small sections according to application.