掺鉺光纤
单模或双包层产品，应用于高功率场合。
Parameters
系列 | 峰值吸收 @1530nm | 应用 | 纤芯直径 | 包层 直径 | 同圆度 |
EDF 4/125 | 10 dB/m | To achieve the highest efficiency of telecommunication amplifiers | 4um | 125um | <0.5um |
25 dB/m | To minimize the amplifier length without pump-to-signal conversion efficiency degradation | 4um | 125um | <0.5um |
50 dB/m | For amplification of ultra-short pulses, when high efficiency, a short amplifier length and a high negative dispersion (-30..-50 ps/nm/km) are required | 3.5um | 125um | <0.5um |
EDF 14/125 | 35 dB/m | For low-nonlinearity and high pulse energy amplifiers, highest power conversion efficiency 36% | 14um | 125um | <1um |
非标准产品 | LMA (MFD~25um)、高掺杂（应用于超低非线性放大） 双包层（100W高功率、且效率高达40%的场合） |
型号 | 数值孔径 | MFD @ 1550nm [μm] | 峰值吸收 [dB/m] | 截止波长 [nm] |
980nm | 1480nm | 1530nm | 1200nm (grey loss) |
EDF-4/125-10 | 0.22±0.04 | 6.5±1 | 6±1 | 4.5±1 | 10±3 | <0.01 | <980 |
EDF-4/125-25 | 0.24±0.04 | 6±1 | 14±2 | 11±2 | 25±5 | <0.02 | <980 |
EDF-4/125-50 | 0.28±0.02 | 5.5±1 | 30±5 | 20±5 | 50±15 | <0.03 | <980 |
EDF-14/125-35 | 0.09±0.02 | 15±2 | 15±3 | 12±3 | 35±10 | <0.02 | ~1350 |
EDF 4/125-10 典型纤芯吸收谱
EDF 4/125-25 典型纤芯吸收谱
EDF 4/125-50 典型纤芯吸收谱
色散 @ 1550nm: -36 ps/nm/km (可定制< -50 ps/nm/km)
色散斜率 @ 1550nm: < 0.03 ps/nm2/km
EDF 14/125-35 典型纤芯吸收谱
