【摘要】 介绍了一种低反射高效率的尖锥端光纤和半导体激光器的耦合技术。应用模式耦合理论分析表明，这种尖锥端光纤的耦合效率可接近９０％，锥端反射损耗大于６０ｄＢ。因此，这种耦合技术既可以提高ＬＤ和光纤的耦合效率，又可以大大降低耦合反射对ＤＦＢ等激光器的影响。简单介绍了这种尖锥端光纤的制造技术，通过精密的磨抛加工，即可获得理想的尖锥端。用自行加工制备的尖锥端光纤与ＤＦＢ半导体激光器耦合，实际测量的耦合效率最大达７３．９％，反射损耗优于５０ｄＢ。更多还原

【Abstract】 A coupling technique between a cone endface fiber and LD with the advantage of high efficiency and low reflectance is presented. The coupling efficiency nearly 90% and the reflectance loss approximately 60 dB are calculated using mode coupling theory. Experimentally, the best coupling efficiency measured is 73.9% and the reflectivity is less than -50 dB. In addition, a new equipment for fabricating the conical microlens is designed, which has the advantages of low cost, simple manipulation, and high finished product rate.更多还原