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低损耗多模光纤的损耗由瑞利散射损耗和微弯损耗等组成。这些损耗依赖于光纤的结构参数。另一方面,从光源耦合到光纤的光功率和光纤之间的连接损耗亦依赖于光纤的结构参数。本文考虑用发光二极管作光源的系统。用FORTRAN语言编制程序,算出系统损耗与比折射率差的关系曲线数表。明确了不同长度系统用的光纤的最适参数。
The loss of low loss multimode fiber consists of Rayleigh scattering loss and microbending loss. These losses depend on the fiber’s structural parameters. On the other hand, the optical power coupled to the optical fiber from the light source and the connection loss between the optical fibers also depend on the structural parameters of the optical fiber. This article considers the use of light-emitting diode light source system. Using FORTRAN language programming, calculate the relationship between system loss and refractive index difference curve table. Clear the different length of the system with the optimum fiber parameters.