论文部分内容阅读
为了克服传统光纤的拉曼增益效率系数低,而且极不平坦给光纤拉曼放大器设计带来的复杂性和制造成本的提高,本文提出了一种新型双芯光子晶体光纤,通过对该光子晶体光纤横截面结构的合理设计,可使该光子晶体光纤在一定的波长范围内具有比传统光纤更高和更平坦的拉曼增益效率系数谱.利用该光子晶体光纤设计了一个波长范围在1530～1565nm的C波段拉曼放大器,数值计算结果表明,仅用一个泵浦的情况下,该光子晶体光纤拉曼放大器的平均增益可达8.7dB,且增益波动小于0.9dB,比标准单模光纤构成的拉曼放大器性能有非常大的提高.
In order to overcome the low Raman gain efficiency coefficient of conventional optical fiber and the extremely uneven flatness of the fiber Raman amplifier design and the increase of the manufacturing cost, a novel dual-core photonic crystal fiber is proposed in this paper. The reasonable design of the optical fiber cross-section structure enables the photonic crystal fiber to have a higher and smoother Raman gain efficiency coefficient spectrum than the conventional optical fiber in a certain wavelength range. By using the photonic crystal fiber, a wavelength range of 1530 ~ 1565nm C-band Raman amplifier. The numerical results show that the average gain of this photonic crystal fiber Raman amplifier can reach 8.7dB and the gain fluctuation is less than 0.9dB with only one pump. Compared with the standard single-mode fiber Raman amplifier performance has been greatly improved.