公开(公告)号：US6122110A

公开(公告)日：2000-09-19

申请号：US187426

申请日：1998-11-06

申请人： Ki Soo Park ,  Ki Suk Sung ,  Yum Jae Chum ,  Sang Yeong Tae ,  Man Soo Seo

发明人： Ki Soo Park ,  Ki Suk Sung ,  Yum Jae Chum ,  Sang Yeong Tae ,  Man Soo Seo

IPC分类号： G02B27/28 ,  G02B6/26 ,  G02F1/09 ,  G02B27/30 ,  G02B6/00 ,  G02B25/00

CPC分类号： G02B6/2746 ,  G02F1/093

摘要： A multi-stage combined optical device having an improved structure which can detect incident light power using a single optical isolator. The multi-stage combined optical device includes a first collimator for collimating a ray emitted from a first optical fiber, an optical isolator having a first polarizer for transmitting an incident ray in a birefringent manner into an ordinary ray and an extraordinary ray, a Faraday rotator for rotationally transmitting the incident ray, and a second polarizer for inversely transmitting the incident ordinary ray and extraordinary ray, sequentially disposed on an optical path, a second collimator for focusing the light transmitted through the second polarizer onto a second optical fiber, a third collimator facing the light receiving plane of the first polarizer and disposed at a position different from that of the first collimator, for focusing a ray emitted from a third optical fiber, and a fourth collimator facing the light emitting plane of the first polarizer and disposed at a position different from that of the second collimator, for focusing a ray emitted from the third collimator via the optical isolator onto a fourth optical fiber. Also, the multi-stage combined optical device further includes a tap formed on a light receiving plane facing the first collimator of the first polarizer, a first photodetector for receiving a first incident ray reflected from the tap and detecting the optical power of the first incident ray, and a second photodetector for receiving a second incident ray reflected from the tap and detecting the optical power of the second incident ray.

摘要翻译： 一种具有改进的结构的多级组合光学器件，其可以使用单个光隔离器检测入射光功率。 多级组合光学装置包括用于准直从第一光纤发射的射线的第一准直器，具有用于以双折射方式将入射光线透射到普通光线和非常光线的第一偏振器的光隔离器，法拉第旋转器 用于反射透射入射光线的第二偏光器和顺序地设置在光路上的入射普通光线和非常光线的反向透射的第二偏振器，用于将透过第二偏振器的光聚焦到第二光纤上的第二准直器，第三准直仪 面对第一偏振片的光接收面并且设置在与第一准直仪不同的位置，用于聚焦从第三光纤发射的射线，以及面对第一偏振片的发光平面的第四准直器， 位置不同于第二准直器的位置，用于聚焦从第三准直器发射的射线 或通过光隔离器到第四光纤上。 此外，多级组合光学器件还包括形成在面对第一偏振器的第一准直器的光接收面上的抽头，用于接收从抽头反射的第一入射光并检测第一事件的光焦度的第一光电检测器 以及第二光电检测器，用于接收从抽头反射的第二入射光并检测第二入射光线的光焦度。