用于光纤参量放大器中受激布里渊散射抑制的带宽高效相位调制技术。

Bandwidth-efficient phase modulation techniques for stimulated Brillouin scattering suppression in fiber optic parametric amplifiers.

作者信息

Coles J B, Kuo B P-P, Alic N, Moro S, Bres C-S, Chavez Boggio J M, Andrekson P A, Karlsson M, Radic S

机构信息

Department of Electrical and Computer Engineering, Jacobs School of Engineering, University of California, San Diego, La Jolla, CA 92093, USA.

出版信息

Opt Express. 2010 Aug 16;18(17):18138-50. doi: 10.1364/OE.18.018138.

DOI:10.1364/OE.18.018138

PMID:20721202

Abstract

Two novel bandwidth efficient pump-dithering Stimulated Brillouin Scattering (SBS) suppression techniques are introduced. The techniques employ a frequency-hopped chirp and an RF noise source to impart phase modulation on the pumps of a two pump Fiber Optical Parametric Amplifier (FOPA). The effectiveness of the introduced techniques is confirmed by measurements of the SBS threshold increase and the associated improvements relative to the current state of the art. Additionally, the effect on the idler signal integrity is presented as measured following amplification from a two pump FOPA employing both techniques. The measured 0.8 dB penalty with pumps dithered by an RF noise source, after accruing 160 ps/nm of dispersion with 38 dB conversion gain in a two-pump FOPA is the lowest reported to date.

摘要

介绍了两种新型的带宽高效泵浦抖动受激布里渊散射（SBS）抑制技术。这些技术采用跳频啁啾和射频噪声源，对双泵浦光纤光学参量放大器（FOPA）的泵浦光进行相位调制。通过测量SBS阈值的增加以及相对于当前技术水平的相关改进，证实了所介绍技术的有效性。此外，还给出了在采用这两种技术的双泵浦FOPA放大后，对闲频信号完整性的影响的测量结果。在双泵浦FOPA中，当泵浦光由射频噪声源抖动，在积累了160 ps/nm的色散且转换增益为38 dB时，测得的0.8 dB代价是迄今为止报道的最低值。