Highest transmission stability, long fiber life time
 
Ultraviolet radiation exposure impacts the transmission performance and life time of silica fibers. With j-Ultrasol, j-fiber has developed a solarization resistant fiber for long life, high transmission stability under UV exposure, especially in the critical wavelength range below 230 nm. j-Ultrasol shows excellent short and long-term stability results: 96% transmission stability at 215 nm over short-term (<24 h) UV exposure, long-term high transmission stability (<1500 h) at a steady 86% level. The silica core/fluorine-doped silica clad Step Index Multimode fiber is well suited for spectroscopy and medical and industry applications in the wavelength operation range below 400 nm. Due to our integrated process chain comprising our own silica glass, preform design and manufacturing, and the final fiber drawing process, we can ensure sustained fiber performance and minimized solarization specific performance degradation - already by controlling our raw materials and preform processes.
 

j-Ultrasol High Transmission Stability
 





















Relative transmission curve of j-Ultrasol fiber at 215 nm (step-index fluorine doped fiber, 200/220 µm, NA 0.22) 229 nm and 265 nm wavelengths as a function of the deuterium lamp exposure time up to 1500 hours.