Plasma cladded optical fiber (PCOF) is numerically investigated which exhibits tunable guiding properties. The effect of plasma frequency on mode field diameter, longitudinal propagation constant and modal dispersion are investigated thoroughly. It is shown that propagation features of PCOFs could be manipulated dynamically (online) by varying the plasma frequency; suggesting its potential applications in addressing coupling issues and dispersion management. Possibility of manipulation of propagation constant carries the potential for applications in delays and buffers. It is further observed that the nature of dispersion curve of HE₁₁ mode of PCOF is usual but could be made more flattened compared to the dielectric fiber by using appropriate plasma frequency which is promising for dispersion management. As fibers with tunable guiding properties have numerous potential applications in optical processing and integrated optics, proposed work should be of high interest from the fundamental as well as engineering point of view.

对包覆等离子体的光纤（PCOF）进行了数值研究，显示出可调的导光性能。彻底研究了等离子体频率对模场直径，纵向传播常数和模态色散的影响。结果表明，通过改变等离子体频率可以动态地（在线）控制PCOF的传播特征。建议其在解决耦合问题和色散管理方面的潜在应用。操纵传播常数的可能性为延迟和缓冲器中的应用带来了潜力。进一步观察到HE ₁₁的色散曲线的性质PCOF的模态很常见，但是通过使用适当的等离子频率，与介电纤维相比，它可以变得更扁平，这有望实现色散管理。由于具有可调引导特性的光纤在光学处理和集成光学中具有众多潜在应用，因此从基本以及工程的角度出发，拟议的工作应引起人们的极大兴趣。