OFS has developed several rare earth doped fibers, each designed for a different type of fiber laser. Ytterbium and Thulium doped fibers have photosensitive cladding. Type Other Doped Fibers Peak Absorption @ 915 nm, 110 dB/m @ 977 nm, 350 dB/m PM or SM SM Coating Diameter 245 µm OFS保偏掺镱光纤也可提供。