A Simplified Dispersion-compensation Microstructure Fiber with Seven cores

Abstract:

In order to compensate the dispersion accumulated in a single mode fiber for higher communication capacity, a simplified dispersion-compensation microstructure fiber with seven cores is proposed in this paper. The fiber’s cladding is made of pure silica without air holes, and its outer cores are composed of 6 germanium up-doped cylinders, which has the ad-vantage of simple structure. The Finite Element Method and Beam Propagation Method is used to study the properties of the fiber, and the relationship between the structure parameters of the fiber and the dispersion, as well as the phase matching wavelength, is obtained. By optimizing the structural parameters of the fiber, the dispersion of the fiber can reach -5291.47ps/(nm-km) at 1550nm, and the coupling loss to the conventional single-mode fiber is only 0.137dB. Compared with the conventional dispersion-compensation fiber, the fiber has lots of advantages, such as single mode transmission, easy to fabricate and low coupling loss with traditional single mode fiber, etc.

Key words:Microstructure fiber; Dispersion compensation; Seven-core; Single-mode transmission; Coupling loss