Stimulated Brillouin scattering has great potential for wide-wavelength-range optical carrier recovery, as it can act as a parametrically defined narrowband gain filter. However, due to the dispersion of the Brillouin frequency shift, prior demonstrations have been limited in wavelength range. Here, we demonstrate that frequency modulating the pump light for a gain filter based on stimulated Brillouin scattering enables optical carrier recovery for a broad range of input wavelengths. We demonstrate highly selective (${\lt}{{150}}\;{\rm{MHz}}$ bandwidth) amplification for optical carriers over an 18 nm wide wavelength range in the optical communications C-band, an ${\sim}{{6}} \times$ improvement over using an unmodulated pump. Measurements of the noise properties of these spectrally broadened gain filters, in both amplitude and phase, indicate the noise performance and SNR are maintained over a wide wavelength range. Our technique provides a potential solution for highly selective, wavelength agnostic optical carrier recovery.

中文翻译：

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通过扩展的布里渊滤光片进行大范围的光载波恢复

受激布里渊散射具有广阔的潜力，可用于宽波长范围的光载波恢复，因为它可以充当参数定义的窄带增益滤波器。但是，由于布里渊频移的分散，先前的演示在波长范围内受到限制。在这里，我们证明了基于受激布里渊散射对增益滤波器的泵浦光进行频率调制，可以实现宽范围输入波长的光载波恢复。对于光通信C波段中18 nm宽波长范围内的光载波，我们展示了高选择性（$ {\ lt} {{150}} \; {\ rm {MHz}} $带宽）放大，即$ {\ sim} {{6}} \ times $使用非调制泵的改进。在幅度和相位上对这些频谱扩展增益滤波器的噪声特性进行的测量表明，噪声性能和SNR在很宽的波长范围内得以保持。我们的技术为高选择性，与波长无关的光学载波恢复提供了一种潜在的解决方案。