【摘要】 本文从一阶微扰理论求得纤芯互相接触的光纤定向耦合器耦合区的传输特性.运用所得到的传输特性及由模式激发理论,计算了强耦合的单模光纤定向耦合器的耦合量.实测结果与理论计算吻合.更多还原

【Abstract】 The first-order perturbation theory is used to analyse the propagation characteristics of guided modes on fiber-core spliced section. The results are applied to determine the theoretical coupling amount of monomode optical fiber directional coupler with strong transverse coupling by means of the mode excitation theory. Our theoretical results are in good agreement with the experimental measurements.更多还原