25 Meters Boron Doped Intrinsically Photosensitive Fiber C&L BRAG Grating FBG Boron Doped Photosensitive Fiber. Fiber lasers. Coating TypeDual Acrylate. 120 (typical) @1550nm. Attenuation (dB/km)10 (typical) @1310nm. Typical Applications Cut-Off Wavelength (nm)1100 - 1260. byJuly 4, 2026