公开(公告)号：EP1660931B1

公开(公告)日：2007-08-15

申请号：EP04728540.8

申请日：2004-04-21

申请人： LINOS Photonics GmbH & Co. KG

发明人： FEHN, Thomas, Linos Photonics gmbh & Co. KG ,  POGGEL, Sven, Linos Photonics gmbh & Co. KG ,  BALLE, Stefan, Linos Photonics gmbh & Co. KG

IPC分类号： G02F1/09

CPC分类号： G02F1/093 ,  H01F7/0273

摘要： The invention relates to a Faraday rotator for a Faraday isolator (10), comprising an entrance polarizer, an exit polarizer, and an interposed cylindrical optical crystal (13) that is arranged symmetrically to the axis of symmetry (x). The rotator further comprises an upright hollow cylinder (11) produced from an axially magnetized permanent-magnetic material, which encloses the crystal. The magnetic field of said material extends in a hollow space (12) parallel to the axis of symmetry that extends in only one direction from the north pole to the south pole. One terminal magnet (16, 17) each follows the two front faces (14) in the plane defined by the y and z direction which is perpendicular to the axis of symmetry. Said terminal magnet is configured as a hollow, upright cylinder and has a through-opening (18) in the prolongation of the axis of symmetry. The Faraday rotator according to the invention is characterized in that every terminal magnet is, at least in some sections, magnetized in a substantially radial manner with respect to the axis of symmetry. One of the two terminal magnets is radially magnetized from the inside to the outside and the other terminal magnet is radially magnetized from the outside to the inside. The hollow cylinder, with its north pole, adjoins the terminal magnet which is magnetized from the inside to the outside, and with its south pole it adjoins the terminal magnet which is magnetized from the outside to the inside.

摘要翻译： 用于具有输入偏振器的法拉第隔离器的法拉第旋转器，具有输出偏振器，布置在其间并且与其对称轴对称布置的辊状光学晶体，具有围绕该轴线的右中空圆柱体，并具有 由永久磁性材料制成的中空空间，该圆柱体被轴向磁化，其磁场在中空空间中延伸大致平行于仅从一个方向从北极到南极的对称轴，并且具有端子 附着到垂直于对称轴的y方向和z方向的平面中的两个端面中的每一个的磁体，每个端面被实施为中空的右圆柱体，并且在轴的延伸中具有通孔 对称性的特征在于，每个端子磁体至少相对于对称轴线被大部分径向磁化，其中两个端子磁体中的一个磁化为r 从内部到外部，另一个端子磁体从外部到内部径向磁化，并且其北极的中空圆柱与从内部到外部被磁化的端子磁体相邻，并且在其南极与 从外部到内部磁化的端子磁体。

公开(公告)号：EP1660931A1

公开(公告)日：2006-05-31

申请号：EP04728540.8

申请日：2004-04-21

申请人： LINOS Photonics GmbH & Co. KG

发明人： FEHN, Thomas, Linos Photonics gmbh & Co. KG ,  POGGEL, Sven, Linos Photonics gmbh & Co. KG ,  BALLE, Stefan, Linos Photonics gmbh & Co. KG

IPC分类号： G02F1/09

CPC分类号： G02F1/093 ,  H01F7/0273

摘要： The invention relates to a Faraday rotator for a Faraday isolator (10), comprising an entrance polarizer, an exit polarizer, and an interposed cylindrical optical crystal (13) that is arranged symmetrically to the axis of symmetry (x). The rotator further comprises an upright hollow cylinder (11) produced from an axially magnetized permanent-magnetic material, which encloses the crystal. The magnetic field of said material extends in a hollow space (12) parallel to the axis of symmetry that extends in only one direction from the north pole to the south pole. One terminal magnet (16, 17) each follows the two front faces (14) in the plane defined by the y and z direction which is perpendicular to the axis of symmetry. Said terminal magnet is configured as a hollow, upright cylinder and has a through-opening (18) in the prolongation of the axis of symmetry. The Faraday rotator according to the invention is characterized in that every terminal magnet is, at least in some sections, magnetized in a substantially radial manner with respect to the axis of symmetry. One of the two terminal magnets is radially magnetized from the inside to the outside and the other terminal magnet is radially magnetized from the outside to the inside. The hollow cylinder, with its north pole, adjoins the terminal magnet which is magnetized from the inside to the outside, and with its south pole it adjoins the terminal magnet which is magnetized from the outside to the inside.