Acta Optica Sinica, Volume. 39, Issue 10, 1006004(2019)
Gain-Equalized Remotely Pumped Few-Mode Fiber Amplifier
Mode division multiplexing is becoming a potential approach to overcome the capacity crunch of a single-mode fiber transmission system. In the future mode- and wavelength-division multiplexing system, different spatial modes and the wavelength gain difference will affect the transmission capacity and speed. In this study, to realize the modal gain equalization and wavelength gain flatness, a 44.5 km few-mode fiber with ultra-low loss is pumped by the 1480 nm pump light with LP11 mode,and the distributed Raman amplification through the few-mode fiber is realized. The few-mode erbium doped fiber is pumped by the residual pump light, and the lumped few-mode erbium doped fiber amplification is realized. A remotely pumped few-mode fiber amplifier is experimentally demonstrated. The average equivalent on-off gain is greater than 15 dB, and a differential modal gain approximately 2 dB in the wavelength range of 1560-1600 nm is achieved.
Get Citation
Copy Citation Text
Zhenzhen Zhang, Cheng Guo, Yichi Zhang, Cheng Du, Liang Cui, Xiaoying Li. Gain-Equalized Remotely Pumped Few-Mode Fiber Amplifier[J]. Acta Optica Sinica, 2019, 39(10): 1006004
Category: Fiber Optics and Optical Communications
Received: Apr. 4, 2019
Accepted: Jun. 24, 2019
Published Online: Oct. 9, 2019
The Author Email: Li Xiaoying (xiaoyingli@tju.edu.cn)