Sharp tunable optical filters based on the polarization attributes of stimulated Brillouin scattering.
Sharp tunable optical filters based on the polarization attributes of stimulated Brillouin scattering.
复制标题
DOI：
10.1364/oe.19.021945
复制
发表时间：
2011-10
期刊：
影响因子：
3.8
通讯作者：
A. Wise;M. Tur;A. Zadok
中科院分区：
文献类型：
--
作者：
A. Wise;M. Tur;A. Zadok
本文介绍了一种基于标准光纤中受激布里渊散射（SBS）放大的高选择性可调谐光学带通滤波器。SBS放大的信号波的偏振牵引用于将滤波器的选择性增加到30 dB。通过合成的直接调制的泵浦展宽用于提供可调谐的、尖锐的和均匀的放大窗口：在半最大值处获得700 MHz的通带宽度，在-20 dB点处获得1 GHz的通带宽度。滤波器的中心频率、带宽和形状可以任意设置。与基于标量SBS的滤波器相比，偏振增强设计提供了更高的选择性和更高的耗尽阈值。
Sharp and highly-selective tunable optical band-pass filters, based on stimulated Brillouin scattering (SBS) amplification in standard fibers, are described and demonstrated. Polarization pulling of the SBS-amplified signal wave is used to increase the selectivity of the filters to 30 dB. Pump broadening via synthesized direct modulation was used to provide a tunable, sharp and uniform amplification window: Pass-band widths of 700 MHz at half maximum and 1 GHz at the -20 dB points were obtained. The central frequency, bandwidth and shape of the filter can be arbitrarily set. Compared with scalar SBS-based filters, the polarization-enhanced design provides a higher selectivity and an elevated depletion threshold.