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    • 3. 发明公开
    • SINGLE FIBRE DEVICE
    • 单纤维装置
    • EP2685300A1
    • 2014-01-15
    • EP12852059.0
    • 2012-11-22
    • Huawei Technologies Co., Ltd.
    • ZENG, TongxinZHANG, XuemingLI, Sheng
    • G02B6/42
    • G02B6/4246G02B6/27G02B6/272G02B6/2746G02B6/2773G02B6/278G02B6/2793G02B6/4208G02B6/4213G02B6/4215G02B2006/12116G02F1/09G02F1/095G02F1/0955
    • A single-fiber subassembly includes a first photodiode (2) for receiving incident light (21) and a laser diode (3) for transmitting emergent light (31), and a same-wavelength optical splitter (1) that has a positive direction. The same-wavelength optical splitter (1) includes a first birefringent plate (11), a half-wave plate (12), a 45° Faraday rotator (13), and a second birefringent plate (14) that is the same as the first birefringent plate (11), which are arranged in sequence along the positive direction and vertical to the positive direction. An included angle between an optical axis of the first birefringent plate (11) and the positive direction is α, where 0°
    • 单光纤子组件包括用于接收入射光(21)的第一光电二极管(2)和用于透射出射光(31)的激光二极管(3),以及具有正方向的同波长光分路器(1)。 同波长分光器(1)包括第一双折射片(11),半波片(12),45°法拉第旋转器(13)和第二双折射片(14),第二双折射片与第一双折射片 第一双折射片(11),它们沿着正方向并且垂直于正方向依次布置。 第一双折射片(11)的光轴与正方向的夹角为α,其中0°<α<90°; 半波片(12)的e轴与第一双折射片(11)的主截面之间的角度为β,其中β= 22.5°或β= 67.5°。 入射光(21)沿着正方向通过同一波长的分光器(1) 出射光(31)沿着与正方向相反的方向通过同一波长的分光器(1) 出射光(31)是偏振方向与第一双折射板(11)的主截面垂直的直线偏振光。 单光纤组件在理论上实现了同波长单光纤双向的无损传输,并且实现了高发射光功率和接收器灵敏度。
    • 8. 发明公开
    • Optical waveguide device and method of manufacturing same
    • Optische Wellenleitervorrichtung und Herstellungsverfahren
    • EP0851244A1
    • 1998-07-01
    • EP97310541.4
    • 1997-12-23
    • NGK INSULATORS, LTD.
    • Kondo, Atsuo
    • G02B6/13
    • G02B6/1342G02B6/12004G02B2006/12097G02B2006/12116G02B2006/12142
    • An optical waveguide device includes an LiNbO 3 substrate (26) and an optical waveguide (28) disposed on the LiNbO 3 substrate (26) by diffusing Ti therein. The LiNbO 3 substrate (26) has a step (80) on a surface thereof which corresponds to the area in which Ti is diffused. The step (80) has opposite side edges (80a) and a central area (80b) therebetween, the side edges (80b) having a height (Ts) greater than a height (Tc) of the central area (80b), whereby the side edges (80b) are raised higher than the central area (80b). The optical waveguide device has a relatively small coupling loss with respect to an optical fiber having a small light beam mode shape, thus eliminating optical device loss faults.
    • 光波导器件包括通过在其中扩散Ti而设置在LiNbO 3衬底(26)上的LiNbO 3衬底(26)和光波导(28)。 LiNbO 3基板(26)在其表面上具有对应于Ti扩散区域的台阶(80)。 台阶(80)具有相对的侧边缘(80a)和其间的中心区域(80b),侧边缘(80b)的高度(Ts)大于中心区域(80b)的高度(Tc),由此 侧边缘(80b)比中心区域(80b)高。 光波导器件相对于具有小光束模式形状的光纤具有相对较小的耦合损耗,从而消除光器件损耗故障。