Coherent 780-HP high-performance select cutoff single-mode fiber is optimized for near IR wavelengths. Developed for coupler generation, diode pigtails, and unique delivery needs, 780-HP fibers offer improved strength, increased reliability, and reduced costs for manufacturers. Building a Setup? One-Click download of multiple documents available from the shopping cart. Patch cables that incorporate these fibers are available from stock, see. The Single Mode Optical Fiber by Thorlabs operates in the spectral range of 780 to 970 nm with a Ø125 µm cladding. This fiber features low attenuation, high long-term bend radius, and a precise mode field diameter suitable for consistent light transmission.