Rotary propagation characteristics of light in multimode-single mode-multimode fiber structures using ray tracing method

Abstract

The mode theory is the main way to study the propagation characteristics of light in fiber so far, but it is not suitable for analysis of light in duct. By using ray-tracing method, the rotary propagation characteristics of light in multimode-single mode-multimode (MSM) fiber structures are analyzed in this paper. Firstly, the light ray in fiber can propagate around an inscribed circle, and the central axis of this fiber is the propagation axis. Secondly, the radius of the inscribed circle is decided by both incident angle and incident position, and its variation is between 0 and R_M, where R_M is the radius of the multimode fiber. Lastly, the bigger the ratio of core and cladding diameter is, the higher the propagation efficiency is.

Keywords

Propagation Efficiency / Single Mode Fiber / Propagation Angle / Rotary Propagation / Inscribe Circle

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