Design of a low-noise Er-doped-fiber-amplifier (EDFA) for fiber hydrophone system

Liao Yi; Zhou Meng; Zhengliang Hu; Yongming Hu

doi:10.1117/12.765370

11 January 2008 Design of a low-noise Er-doped-fiber-amplifier (EDFA) for fiber hydrophone system

Liao Yi, Zhou Meng, Zhengliang Hu, Yongming Hu

Proceedings Volume 6830, Advanced Sensor Systems and Applications III; 68302B (2008) https://doi.org/10.1117/12.765370
Event: Photonics Asia 2007, 2007, Beijing, China

Abstract

The paper reports a demonstration of a reflective Er-Doped-Fiber-Amplifier (EDFA) system. The system is designed for optical pre-amplification in remote fiber optic hydrophone system. In the reflective EDFA, a Fiber-Bragg-Grating (FBG) is placed at the EDFA output end to reflect the signal and to prevent the ASE feedback. A fiber with a reflecting end is also placed at the output end to reflect the pump. An experiment is also demonstrated to test the gain (G), noise figure (NF, intensity noise and phase noise of the reflective EDFA in comparison with standard, single-pass configuration EDFA. The proposed EDFA shows higher gain but lower noise figure and lower relative intensity noise and phase noise than conventional standard configuration. While its gain is nearly twice that of the standard configuration, its NF is about 4dB lower than that of a standard configuration. In addition, the reflective EDFA reduces the phase noise at 1KHz and the relative intensity noise of the hydrophone system when it is high bumped.

Citation Download Citation

Liao Yi, Zhou Meng, Zhengliang Hu, and Yongming Hu "Design of a low-noise Er-doped-fiber-amplifier (EDFA) for fiber hydrophone system", Proc. SPIE 6830, Advanced Sensor Systems and Applications III, 68302B (11 January 2008); https://doi.org/10.1117/12.765370

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KEYWORDS

Optical amplifiers

Reflectivity

Fiber Bragg gratings

Interference (communication)

Fiber amplifiers

Electronic filtering

Fiber optics

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