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可调控光纤慢光作为光缓存器在全光路由通信中具有重要的应用前景.由于受限于较低的布里渊阈值和较大的信号功率,传统的光纤布里渊散射慢光增益一般不超过30dB.本文提出在短光纤中实现高增益布里渊放大的可调控慢光,利用短光纤的高阈值有效避免泵浦抽空,实现高增益的信号放大,从而提高慢光延迟量.实验证实采用591.8m长的单级光纤布里渊放大的非饱和增益达到50dB,慢光延迟时间可达到52ns,分数延迟量超过1.
Adjustable optical fiber slow light as an optical buffer in the all-optical routing communication has an important application prospects due to limited by the lower Brillouin threshold and a larger signal power, the traditional fiber Brillouin scattering slow optical gain Which does not exceed 30dB.In this paper, we propose a controllable slow light that can achieve high-gain Brillouin amplification in a short fiber, which can effectively avoid the pumping time-out by using the high threshold of the short fiber, and achieve high-gain signal amplification to improve the slow light delay. It is confirmed that the unsaturated gain of single stage fiber Brillouin amplification of 591.8m reaches 50dB, the slow light delay time can reach 52ns, and the fractional delay exceeds 1.