Al-Mansoori M H, Al-Alimi A W, Sarmani A R, Abas A F, Alresheedi M T, Mahdi M A
Opt Express. 2019 Sep 16;27(19):26957-26966. doi: 10.1364/OE.27.026957.
In this paper, we demonstrate a wide-uniform and hybrid multi-wavelength fiber laser source with triple Brillouin-shift wavelength spacing. The hybrid gains include the combination of erbium-ytterbium-doped fiber and distributed Raman amplifiers. For optimum performances, the Brillouin pump wavelength is set at 1532 nm with power at -20 dBm, erbium-ytterbium-doped fiber amplifier at 950 mW and Raman pump power at 900 mW. The highest channel count is obtained in this kind of laser design, where around 164 Stokes lines are produced within 10 dB spectral flatness. The corresponding bandwidth is 40 nm, where the average optical signal-to-noise ratio is maintained at 36 dB estimation. The outstanding total power stability indicates 0.74 dB fluctuation over a 45-minute duration. This merits the practicality for various applications especially in optical communication system and sensing. Furthermore, a reasonable wide tuning range of 36 nm is realized, beginning from 1532 nm, which is only restricted by the accessible hybrid gain bandwidth.
在本文中，我们展示了一种具有三重布里渊频移波长间隔的宽均匀混合多波长光纤激光源。混合增益包括掺铒镱光纤和分布式拉曼放大器的组合。为实现最佳性能，布里渊泵浦波长设置为1532 nm，功率为 -20 dBm，掺铒镱光纤放大器功率为950 mW，拉曼泵浦功率为900 mW。在这种激光设计中获得了最高的通道数，在10 dB光谱平坦度内产生了约164条斯托克斯线。相应的带宽为40 nm，平均光信噪比估计保持在36 dB。出色的总功率稳定性表明在45分钟的持续时间内波动为0.74 dB。这使其在各种应用中具有实用性，特别是在光通信系统和传感领域。此外，从1532 nm开始实现了36 nm的合理宽调谐范围，这仅受可获得的混合增益带宽限制。
