Jain S, Sakamoto T, Jung Y, Davidson I A, Barua P, Hayes J R, Shibahara K, Mizuno T, Miyamoto Y, Nakajima K, Richardson D J
Opt Express. 2021 Sep 13;29(19):30675-30681. doi: 10.1364/OE.428142.
We present a C-band 6-mode 7-core fiber amplifier in an all-fiberized cladding-pumped configuration for space division multiplexed transmission supporting a record 42 spatial channels. With optimized fiber components (e.g. passively cooled pump laser diode, pump coupler, pump stripper), high power multimode pump light is coupled to the active fiber without any noticeable thermal degradation and an average gain of 18 dB and noise figure of 5.4 dB are obtained with an average differential modal gain of 3.4 dB.
我们展示了一种全光纤包层泵浦配置的C波段6模式7芯光纤放大器，用于支持创纪录的42个空间信道的空分复用传输。通过优化光纤组件（例如被动冷却的泵浦激光二极管、泵浦耦合器、泵浦剥离器），高功率多模泵浦光被耦合到有源光纤中，且没有任何明显的热劣化，平均增益为18 dB，噪声系数为5.4 dB，平均差分模式增益为3.4 dB。
