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
- Acta Optica Sinica
- Vol. 39, Issue 10, 1006004 (2019)
Fig. 1. Schematic of forward remotely pumped few-mode fiber amplifier with two-signal mode transmission
Fig. 2. Experimental setup of remotely pumped few-mode fiber amplifier
Fig. 3. Images of modal intensities for LP01 and LP11 modes after few-mode fiber Raman amplification and FM-EDF amplification. (a) Few-mode fiber Raman amplification; (b) FM-EDF amplification
Fig. 4. Contours of equivalent on-off gain as a function of FM-EDF length and signal wavelength. (a) LP01 mode; (b) LP11 mode
Fig. 5. On-off gain in few-mode fiber Raman amplification and equivalent on-off gain in remotely pumped few-mode fiber amplification at the wavelength range of 1530-1605 nm
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Table 1. Intensity overlap integral between 1480 nm pump mode and 1550 nm signal mode in the ultra-low-loss passive fiber109 m-2
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