Influence of seed power and gain fiber temperature on output linewidth in single-frequency EYDFA

Bai Xiaolei; Sheng Quan; Zhang Haiwei; Fu Shijie; Shi Wei; Yao Jianquan

doi:10.3788/IRLA201847.1005004

Based on the 1 550 nm single-frequency Erbium-Ytterbium co-doped fiber amplifier (EYDFA), the linewidth broadening with different seed powers and gain fiber temperatures was experimentally investigated. The results demonstrate that, to obtain the same output power, the increase of the seed power was beneficial to improve the output signal to noise ratio (SNR), and to reduce the linewidth broadening. The increase of gain fiber temperature can improve slope efficiency and enhance the amplified spontaneous emission (ASE) intensity but broaden linewidth. Meanwhile, the reason of linewidth broadening was discussed and the ASE was considered as one of the reason of linewidth variation.

Influence of seed power and gain fiber temperature on output linewidth in single-frequency EYDFA

1. College of Precision Instrument and Opto-electronics Engineering,Tianjin University,Tianjin 300072,China;

2. Key Laboratory of Opto-electronics Information Technology(Ministry of Education),Tianjin University,Tianjin 300072,China

Received Date: 2018-05-05

Rev Recd Date: 2018-06-03

Publish Date: 2018-10-25

Key words:

Erbium-Ytterbium co-doped fiber amplifier /
single frequency /
ASE /
linewidth

Abstract: Based on the 1 550 nm single-frequency Erbium-Ytterbium co-doped fiber amplifier (EYDFA), the linewidth broadening with different seed powers and gain fiber temperatures was experimentally investigated. The results demonstrate that, to obtain the same output power, the increase of the seed power was beneficial to improve the output signal to noise ratio (SNR), and to reduce the linewidth broadening. The increase of gain fiber temperature can improve slope efficiency and enhance the amplified spontaneous emission (ASE) intensity but broaden linewidth. Meanwhile, the reason of linewidth broadening was discussed and the ASE was considered as one of the reason of linewidth variation.

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Reference (13)

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Influence of seed power and gain fiber temperature on output linewidth in single-frequency EYDFA

doi: 10.3788/IRLA201847.1005004

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