Optical fiber DUV

This fiber has been specially developed for DUV applications where photodarkening (also known as solarization) becomes main reason of transmission decrement during utility time caused by UV exposure. New fiber shows excellent stability of transmission after short time of exposure. Transmission recovery occurs when UV exposure is removed. Improved transmission at DUV Fiber is hermetically encapsulated by Carbon coating Recovery of fiber after UV exposure has been removed Carbon coating works as screen Improved transmission at: 190-250nm Operating wavelengths: 190-1100nm Structure of fiber: Synthetic silica core/F-doped reflecting cladding/Carbon coating/Polyimide jacket Hydroxyl content in core: 600-800ppm NA: 0.22 ± 0.02 as standard Fiber glass diameters: 100-660 μm as standard, larger upon request Operating temperature: -190° C to +150°C Proof test: minimum 70 kpsi, others upon request