一种新的阵列半导体激光器侧面耦合双包层光纤的方法研究  

Analysis and computation of a new scheme of double-cladding fiber side-coupling of laser diode array

作　　者：程雯婧[1] 宁提纲[1] 

机构地区：[1]北京交通大学光波技术研究所,北京100044

出　　处：《激光杂志》2008年第1期55-56,共2页Laser Journal

基　　金：国家自然科学基金;北京市自然科学基金(4052023);新世纪优秀人才支持计划(NCET-06-0076);北京交通大学校科技基金(2006XM003)

摘　　要：V型槽侧面耦合是目前双包层光纤泵浦光耦合的方法之一。本文提出了一种新的制作V型槽进行侧面泵浦的工艺方法,即在光纤预制棒上进行刻槽,然后对侧面已刻出一长条V型槽的预制棒进行拉丝。针对这种新的侧面泵浦方法的耦合效率进行了理论的分析和计算。通过对交迭场的积分求出这种新的侧面泵浦方法的耦合效率,并对激光二极管阵列距离V型槽的位置以及V型槽所开的角度进行了优化。为随后的实验提供了理论依据。A new scheme of double - cladding fiber side - coupling of laser diode array is proposed. A V - groove was fabricated on the lateral of the perform. A theoretical formula for the coupling efficiency in the absence of beth angular and transverse misalignments was presented. Based on the assumption that beth the fundamental mode field of the laser beam and the fiber was approximated by a Guassian beam, a maximum coupling efficiency of 82% was predicted by the theory when the distance between the laser and the fiber was 18μn. For a fixed distance between the laser and the fiber, a maximum coupling efficiency was achieved when the angle of the v - groove was 4 - 5＇. And the coupling efficiency decreased rapidly when the angle was above 10°.

关 键 词：光电子学 双包层光纤激光器 V型槽侧面泵浦 耦合效率 

分 类 号：TN245[电子电信—物理电子学] TN247