Enhancing the SNR of BOTDR by Gain-Switched Modulation

A scheme utilizing gain-switched modulation to enhance the signal-to-noise ratio (SNR) of Brillouin optical time domain reflectometer (BOTDR) is proposed and evaluated. The modulation mechanism of the gain switch is analyzed and how it improves the SNR of BOTDR is revealed. The experimental results...

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Veröffentlicht in:	IEEE photonics technology letters 2019-02, Vol.31 (4), p.283-286
Hauptverfasser:	Bai, Qing, Xue, Bo, Gu, Hang, Wang, Dong, Wang, Yu, Zhang, Mingjiang, Jin, Baoquan, Wang, Yuncai
Format:	Artikel
Sprache:	eng
Schlagworte:	BOTDR Erbium Error analysis extinction ratio Frequency shift Gain Gain switch Modulation Optical pulses Optical switches Signal to noise ratio SNR enhancement Variations
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