Forward and backward intensity noises induced by stimulated Brillouin scattering in optical fiber

• 来源期刊: 中国光学快报（英文版）
• 年，卷（期）: 2012,（2）
• 页码范围: 12-14
• 页数: 3页
• 语种: 英文
• DOI: 10.3788/COL201210.020603

摘要

The characteristic of intensity noise is degraded when stimulated Brillouin scattering (SBS) occurs in the fiber transmission systems.We use the localized fluctuating model to study SBS and obtain the curves of intensity fluctuations versus the single-pass gain.Corresponding experiments are also conducted.For the forward light,the relative intensity noise (RIN) dramatically increases at first and gradually stabilizes when the input power is above the SBS threshold.For the backward light,the RIN increases dramatically with the input power near the threshold.As the input power continues to increase,the RIN decreases quickly at first and subsequently decreases slowly.This observation is attributed to the lower frequencies.