Stimulated Raman amplification is observed for the first time in the silicon core fiber (SCF) platform. The SCFs were tapered to obtain sub-micrometer core dimensions and low optical transmission losses, facilitating efficient spontaneous scattering and stimulated Raman amplification using a continuous-wave pump source with milliwatt power levels. A maximum on–off gain of 1.1 dB was recorded at a pump power of only 48 mW with our numerical simulations, indicating that gains up to 6dB are achievable by increasing the fiber length. This work shows that the SCF platform could open a route to producing compact and robust all-fiber integrated Raman amplifiers and lasers across a broad wavelength region.

中文翻译：

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在电信频段泵浦的硅芯光纤中的连续波拉曼放大

在硅芯光纤 (SCF) 平台中首次观察到受激拉曼放大。SCF 逐渐变细以获得亚微米核心尺寸和低光传输损耗，使用具有毫瓦功率级的连续波泵浦源促进有效的自发散射和受激拉曼放大。在我们的数值模拟中，泵浦功率仅为 48 mW 时记录的最大开关增益为 1.1 dB，表明通过增加光纤长度可以实现高达 6dB 的增益。这项工作表明，SCF 平台可以开辟一条生产紧凑而坚固的全光纤集成拉曼放大器和跨越宽波长区域的激光器的途径。