半导体激光器与单模光纤的全光纤耦合技术研究

Research on All-Fiber Coupling between a Diode Laser and Single-Mode Fibers

采用梯度折射率光纤透镜耦合法实现了半导体激光器到单模光纤的高效率耦合,并在这一系统基础上完善了半导体激光器全光纤耦合的ABCD矩阵理论。实验中,利用梯度折射率光纤的聚焦特性,选取合适的长度,实现了半导体激光器到单模光纤的高效率耦合,最大耦合效率达80.5%。此全光纤耦合方式具有体积小、制作简单、成本低等优点,对低成本、实用化的尾纤输出半导体激光器的实现具有重要的意义。

Grin fiber lens is used in achieving the effective coupling between laser diode （LD） and single mode fibers （SMFs）. The ABCD matrix theory of the albfiber coupling of LDs is also consummated. During the experiment, the optimized length of the Grin fiber is precisely accomplished through a home-made fiber-progressing system to achieve a high coupling efficiency according to the focusing characteristic of Grin fiber, and the maximum efficiency of 80.5 % is ultimately realized. This all-fiber coupling configuration has several advantages including the small-sized, easy-made and low cost, which is important for the realization of the low-cost, pigtailed LDs.