一种偏振光合束器
申请公布号:CN2499849Y
申请号:CN01262768.2
申请日期:2001.09.14
申请公布日期:2002.07.10
发明人:林斌;张晟
分类号:G02B6/27
主分类号:G02B6/27
代理人:方惠春
地址:350014福建省福州市福兴投资区
摘要:本实用新型公开了一种,包括一个保偏双光纤准直器,一个普通单光纤准直器,其中,在保偏双光纤准直器和普通单光纤准直器之间放置有两块相粘结的楔形双折射晶体,靠近保偏双光纤准直器的是一块光轴垂直于侧垂面的楔形双折射晶体,另一块楔形双折射晶体为光轴方向在入射面内与晶体底面成θ角的走离(walk-off)型楔形双折射晶体,采用本结构的偏振光合束器的偏振光在两楔形双折射晶体内的折射率差异比渥拉斯顿棱镜更小,放宽了楔角的精度要求,其结构紧凑,加工方便,稳定性好。
主权项:1、一种偏振光合束器,包括一个保偏双光纤准直器,一个普通单光纤准直器等,其特征在于在保偏双光纤准直器和普通单光纤准直器之间放置有两块相粘结的楔形双折射晶体,靠近保偏双光纤准直器的是一块光轴垂直于侧垂面的楔形双折射晶体,另一块楔形双折射晶体为光轴方向在入射面内与晶体底面成θ角的走离(walk-off)型楔形双折射晶体。
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