Investigation on the Noise Suppression of Brillouin Amplification for Weak Stokes Signals

摘要：

For weak Stokes Brillouin amplification, the speckle noise of the amplified spontaneous Brillouin scattering (ABS) of pump laser limits the signal to noise ratio (SNR). This paper introduces the design of a double signal Brillouin amplification scheme, it can improve the SNR for weak signal Brillouin amplification. The experimental results show that the noncollinear strong Stokes Brillouin amplification can reduce ABS noise by more than two orders of magnitude, the collinear weak Stokes signal optical magnification decreases only one order of magnitude, nJ collinear weak signal can still get 105 magnification. Double signal Brillouin amplification scheme can substantially in the amplified signal, at the same time, can effectively improve the optical SNR, and improve the reliability of signal measurement.

关键词： Brillouin amplification signal to noise ratio amplified spontaneous Brillouin scattering optical weak signal detection

作者: Weiming He Hongbo Liu Wuliji Hasi Zhiwei Lu

作者单位: Institute of Opto-electronics Harbin Institute of Technology Harbin, China

会议类型: 国际会议

会议名称: 2012 International Conference on Optoelectronics and Microelectronics(2012光电子与微电子国际学术会议 2012 ICOM)

会议地点: 长春

会议语种:英文

页码: 228-231

在线出版日期: 2012-08-23（万方平台首次上网日期，不代表论文的发表时间）