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Ultra-low-power all-optical switching device by use of ytterbium-doped fiber Bragg gratings

机译:掺y光纤布拉格光栅的超低功率全光开关装置

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摘要

A new, to our knowledge, scheme of all-optical switching is put forward by use of an all-fiber Mach-Zehnder interferometer incorporating ytterbium-doped fiber Bragg gratings. The device utilizes the characteristics of the sharp change of group velocity in transmission with the detuning parameter, delta = 2pi(n) over bar (1/lambda - 1/lambda(B)). The switching is achieved by changing the Bragg wavelength of the ytterbium-doped arm of the interferometer. A very small shift of the Bragg wavelength can lead to a pi phase shift between the two arms, so the power needed to realize complete switching is much lower than that of other schemes. In addition, the device can compensate the dispersion of an optical pulse through the positive group velocity dispersion in transmission provided by the gratings. (C) 2002 Optical Society of America. [References: 11]
机译:据我们所知,通过使用掺有掺fiber光纤布拉格光栅的全光纤马赫曾德尔干涉仪,提出了一种新的全光切换方案。该设备利用在棒上(1 /λ-1 /λ(B))的失谐参数delta = 2pi(n)传输时群速度急剧变化的特性。通过改变干涉仪的掺arm臂的布拉格波长来实现切换。布拉格波长的很小偏移会导致两个臂之间的pi相移,因此实现完全切换所需的功率比其他方案的功率低得多。另外,该装置可以通过由光栅提供的透射中的正群速度色散来补偿光脉冲的色散。 (C)2002年美国眼镜学会。 [参考:11]

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