OPTICAL PUMPING TECHNIQUE

A Raman amplifier having an optical pump configured to generate pump bands, each of which is spectrally aligned with a respective wavelength channel of a frequency grid in a manner that enables the pump bands to coexist in an optical fiber with data-carrying signals of other wavelength channels of the frequency grid without causing unworkable levels of inter-channel interference. In an example embodiment, the optical pump comprises a laser whose single-mode output is modulated to sufficiently suppresses stimulated Brillouin scattering in the optical fiber while still keeping the optical powerof each of the resulting pump bands spectrally compact, e.g., substantially contained within the slot width of the respective wavelength channel. In some embodiments, at least some pump bands can be spectrally interleaved with some of the data-carrying signals to increase the data-throughput capacity of the corresponding optical transport system. 种拉曼放大器，其具有被配置为产生泵带的光泵，每个泵带以使得泵带能够在光纤中与频率栅格的其它波长通道的数据承载信号共存而不会导致不可行级别的通道间干扰的方