Research Of All-optical Wavelength Conversion Based On Stimulated Raman Scattering In Tellurite Fiber

With the advent of the Internet age, people’s demand for information and day surge. In order to meet people’s needs, the network is moving in the direction of the large-capacity, high-speed development. All-optical network is recognized as the preferred solution to the high-capacity networks, high-speed development. And as all-optical wavelength converter all-optical network, one of the key components in recent years, become a hot research.This paper describes the development of all-optical networks and all-optical wavelength converter meaning, then provides an overview of the development of the wavelength converter and classification, especially focusing on several all-optical wavelength converter to summarize the principles and characteristics, and found optical fiber nonlinear effects (cross-gain modulation, cross-phase modulation, four-wave mixing, etc.) to implement all-optical wavelength conversion is that people research focus. The stimulated Raman scattering as a non-linear effects in the fiber, can also be realized all-optical wavelength conversion, even stronger than those of its non-linear effects conducted using other wavelength conversion in some respects. In this paper proposed a novel tellurium-based optical fiber, and Raman gain coefficient nonlinear coefficient than conventional silica-based fibers to be several times larger, or even several orders of magnitude. But its biggest flaw is the loss factor is much larger than conventional silicon fiber. And in the new tellurium-based fiber, can achieve the same success wavelength conversion, the problem is unknown.With this question, the author of stimulated Raman scattering in-depth study found that when the terms of the signal light as pump source for continuous detection of light amplification by stimulated Raman, information on the signal light can be converted to a continuous probe light on. Then the author from unidirectional single-mode silica fiber WDM transmission system transient model to start, based on the quartz fiber N-channel analytical solution of transient SRS coupled wave equations under the non-dispersive limit, using the following amplification conditions this resolved simplified form of the solution, the establishment of a fiber-based all-optical wavelength conversion by stimulated Raman effect technology theoretical model for the design and simulation provides a theoretical basis. Under the guidance of the theoretical model, the authors designed a schematic-based fiber stimulated Raman scattering effect of all-optical wavelength converter, and then use it to its analytical solution using matlab simulation analysis, and the impact of the conversion process a few main factors (pump signal light power, fiber length, and be converted target wavelength) to be analyzed and discussed to provide a reference for the actual design of this wavelength converter.