Because the size of photonic device is close to the size of optical wavelength，photonic circuit shows significant diffractive characteristics, which can be used to design photonic devices with novel function. To realize the similar “skin effect” of electronic circuit, we utilize the similarity between “Schrdinger Equation” and the wave function in inhomogeneous medium, and design a type of multi-layer cylindrical optical waveguide with high gradient refractive index and pseudo-gravity potential index distribution. Simulation shows high frequency signal propagate in the surface layer, and signal blind area (“cavity”) exists in the inner part of the waveguide. The size of the cavity varies with the wavelength of the light. The boundary of the cavity locates near the inner-boundary of the layers. Longer wave is less affected by the discontinuity, and can penetrate further into the inner material. The domain of the cavity decreases with the wavelength. This result may have significance for the design of “perfect invisible cloak” and new type photonic circuit.