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    Optical arrangement for a feedback-free coupling of a laser emission emitted by a semiconductor laser into an optical fiber
    1.
    发明授权
    Optical arrangement for a feedback-free coupling of a laser emission emitted by a semiconductor laser into an optical fiber 失效
    用于将由半导体激光器发射的激光发射反馈耦合到光纤中的光学布置

    公开(公告)号：US5066092A

    公开(公告)日：1991-11-19

    申请号：US578418

    申请日：1990-09-06

    申请人： Karsten Droegemueller ,  Ekkehard Klement

    发明人： Karsten Droegemueller ,  Ekkehard Klement

    IPC分类号： G02B6/42 ,  G02B27/28 ,  G02F1/09

    CPC分类号： G02F1/093 ,  G02B6/4209

    摘要： An optical arrangement for the feedback-free coupling of the laser emission emitted by a semiconductor laser into an optical fiber, characterized by a first optical lens for receiving the output of the semiconductor laser, a first optical isolator composed of a Faraday rotator and a polarizer following in the propagation direction of the laser emission, a second optical isolator being composed of a second Faraday rotator and a second polarizer that has a higher blocking attenuation compared to the blocking attenuation of the first polarizer being arranged between the first lens and the optical isolator. In order to use the optical arrangement in an optical heterodyne system, the blocking attenuation of at least -70 dB is obtainable in this arrangement.

    摘要翻译： 一种用于将由半导体激光器发射的激光发射无反馈耦合到光纤中的光学装置，其特征在于用于接收半导体激光器的输出的第一光学透镜，由法拉第旋转器和偏振器组成的第一光隔离器 沿着激光发射的传播方向，第二光隔离器由第二法拉第旋转器和第二偏振器组成，与第一偏振器的阻挡衰减相比，其具有比第一透镜和光隔离器之间的阻挡衰减更高的阻挡衰减 。 为了在光学外差系统中使用光学装置，在这种布置中可获得至少-70dB的阻挡衰减。