标准单模光纤损耗曲线 掺GeO,的低损耗、低OH「含量石英光纤 Wavelength (pm) 0.5 0.6 0.70.80.911.21.52 3510 100 T AllWave:逼近本征损耗 Absorption loss in infrared region 单模：本征损耗+OH厂吸收损耗 Measured loss of fiber OH- 10 First window 5.0 AllWave 0/154dB/km Absorption loss in Standard fiber ultraviolet regon 2.0 Second Scattering 1.0 window Third 0.l oss window 0.5 常温且未暴露 在强辐射下 0.2 AllWave fiber 0.01 0.1 2.5 2.0 1.5 1.0 0.5 0 600 800 1000 1200 1400 1600 1800 Photon energy (eV) Wavelength (nm)标准单模光纤损耗曲线 掺GeO2的低损耗、低OH¯含量石英光纤 OH－ 0.154 dB/km AllWave fiber AllWave：逼近本征损耗 单模：本征损耗+OH¯吸收损耗 常温且未暴露 在强辐射下