求翻译：当在法拉第旋转器上施加左旋的磁场时, 法拉第旋转器和石英旋转器对光波偏振面的旋转皆为+45°，两光束通过法拉第盒后，偏振角皆旋转90°，因此o光转化为e光,e光转化为o光，使得两偏振光束通过第二块YVO4晶体后被分开，再经过三角棱镜和偏振分束镜，合成一束从光纤3输出。是什么意思？

L of the magnetic field is imposed on the Faraday rotator Faraday rotator and quartz rotator the rotation of the light wave polarization plane are +45 °, the two beams through a Faraday box, the polarization angle are rotated 90 °, o light conversion e light, e light into the o-ray, making the two p

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When exerts laevo-rotatory when the Faraday rotor the magnetic field, the Faraday rotor and the quartz rotor to light wave plane of polarization revolving all for +45°, two light beams after the Faraday box, the polarization angle all revolve 90°, therefore the o phototransformation is the e light,

Dang in Farah subsection rotating device Shang imposed l-of magnetic field Shi, Farah subsection rotating device and quartz rotating device light wave polarization surface of rotating are for +45 °, two beam by Farah subsection box Hou, polarization angle are rotating 90 °, so o light transformation