Numerical study on dual-core photonic crystal fiber for dispersion compensation
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摘要: 为了解决光纤通信系统中的色散补偿问题,提出一种新型的用于色散补偿的双芯光子晶体光纤,其构成材料是纯石英和空气,即在常规光子晶体光纤基础上变化包层第1圈和第3圈空气孔、增大了结构参量变化的自由度。采用平面波展开法对其色散补偿特性进行了数值研究,并模拟了包层结构参量与色散之间的关系,计算得出这种光纤的色散可以达到-1956.327ps·nm-1·km-1,能够补偿超过自身长度100倍的普通单模光纤。结果表明,双芯光子晶体光纤在色散补偿方面具有很大潜力,在未来光通信系统中将发挥重要作用。Abstract: In order to deal with the dispersion compensation in optical fiber communication systems,a dual-core dispersion compensation photonic crystal fiber(DCPCF) was put forward.The DCPCF consists of pure silicon and air,namely that the photonic crystal fiber(PCF) is tailored by changing the radius of the first and third ring.The dispersion compensation property in PCF was simulated with the plane wave expansion method and the relation between dispersion and structural parameters was studied.Simulation results show that the dispersion of this DCPCF can reach-1956.327 ps·nm-1·km-1 and also compensate the dispersion over 100 times its length of single mode fiber.DCPCF will play an important role in optical fiber communication,especially dispersion compensation.
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