Investigation on Modal Signal-to-Crosstalk Ratio of FM-EDFAs with Piezoelectric Fiber Stretcher.

Qiquan Wang,Baojian Wu,Xinrui Jiang,Feng Wen,Kun Qiu

2023 IEEE 15th International Conference on Advanced Infocomm Technology (ICAIT)（2023）

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Abstract

We investigate the mode coupling in the few-mode erbium-doped fiber wound around the piezoelectric fiber stretcher by the experiments and theoretical analysis. By adjusting the driving voltage, the signal-to-crosstalk ratio (SXR) of LP 01 , LP 11e and LP 11o modes can be further improved by 0.62dB, 1.03dB and 1.32dB, respectively. The theoretical SXR curves are also obtained from the mode-coupled FM-EDFA model, in agreement with the experimental trend.

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Key words

Mode division multiplexing,few-mode erbium-doped fiber amplifier (FM-EDFA),signal-to-crosstalk ratio (SXR),piezoelectric fiber stretcher

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