Photonic Crystal Fiber is a kind of optical fiber that uses bandgap effect as the principle of the light guiding mechanism. It is a low loss periodic dielectric medium which runs along the entire fiber length constructed using a periodic array of microscopic air holes. Due to the special characteristics of photonic crystal fiber, it has become a trend to use Polarization Switch, Rotator, Filter, and Multiplexer. Polarizing filter based on Photonic Crystal fiber has many impacts in all fiber communication. Thus, single polarizing filter based on dual-wavelength photonic crystal fiber is designed with silver-coated large holes. The type of photonic crystal fiber used is a solid core for polarization filter in order to darken skies, manage reflections, or suppress glare from the surface of lakes or the sea application using finite element method. Mostly Silver exhibits the highest conductivity of all metals. When the material wavelength is changed, correspondingly effective index of the material is also varied (i.e) effective index depends on input wavelength. Thus, the dual-wavelength single Polarization filter is between 1310nm to 1550nm and their polarization direction of the optical output is independent of the wavelength of incident light.