Honzatko Pavel, Baravets Yauhen, Kasik Ivan, Podrazky Ondrej
Opt Lett. 2014 Jun 15;39(12):3650-3. doi: 10.1364/OL.39.003650.
We have experimentally demonstrated two extremely wideband amplified spontaneous emission (ASE) sources. High bandwidth is achieved by combining the backward and forward ASEs generated in thulium-holmium-doped fiber using appropriate wideband couplers. The ASE source optimized for flat spectral power density covers a spectral range from 1527 to 2171 nm at a -10 dB level. The ASE source optimized for spectroscopy features an enhancement with respect to single-mode fiber (SMF) coupled halogen lamps within the spectral range from 1540 nm to more than 2340 nm covering the 800 nm bandwidth.
我们通过实验展示了两种极宽带放大自发辐射（ASE）源。利用合适的宽带耦合器，将掺铥 - 钬光纤中产生的后向和前向ASE相结合，实现了高带宽。针对平坦光谱功率密度进行优化的ASE源在 -10 dB水平下覆盖1527至2171 nm的光谱范围。针对光谱学进行优化的ASE源在1540 nm至超过2340 nm的光谱范围内相对于单模光纤（SMF）耦合卤素灯具有增强效果，覆盖800 nm带宽。
