OPTICAL SOURCE
    3.
    发明公开
    OPTICAL SOURCE 审中-公开
    光源

    公开(公告)号:EP3167558A1

    公开(公告)日:2017-05-17

    申请号:EP14736395.6

    申请日:2014-07-07

    IPC分类号: H04B10/556

    摘要: The present invention provides an optical source comprising a laser, a first optical power splitter, phase changing equipment, polarisation state setting equipment, a polarisation beam coupler and an output. The laser is configured to generate an optical signal. The first optical power splitter is configured to split the optical signal into a first optical signal and a second optical signal. The phase changing equipment is configured to change the phase of at least one of the first optical signal and the second optical signal such that the first optical signal has a first phase and the second optical signal has a second phase different from the first phase by a preselected phase difference. The polarisation state setting equipment is configured to set the polarisation state of at least one of the first optical signal and the second optical signal such that the first optical signal has a first state of polarisation and the second optical signal has a second state of polarisation substantially orthogonal from the first state of polarisation. The polarisation beam coupler is configured to combine the first optical signal and the second optical signal into a composite optical signal comprising both the first optical signal and the second optical signal having said orthogonal states of polarisation. The output is arranged to output at least a portion of the composite optical signal.

    摘要翻译: 本发明提供一种包括激光器,第一光功率分配器,相变设备,偏振状态设定设备,偏振光束耦合器和输出的光源。 激光器被配置为产生光信号。 第一光功率分配器被配置为将光信号分成第一光信号和第二光信号。 相变装置被配置为改变第一光信号和第二光信号中的至少一个的相位,使得第一光信号具有第一相位,并且第二光信号具有与第一相位不同的第二相位, 预选相位差。 偏振状态设置设备被配置为设置第一光信号和第二光信号中的至少一个的偏振状态,使得第一光信号具有第一偏振状态并且第二光信号具有基本上第二偏振状态 与第一偏振态正交。 偏振光束耦合器被配置为将第一光信号和第二光信号组合成包括第一光信号和具有所述正交偏振状态的第二光信号的复合光信号。 输出被安排成输出复合光信号的至少一部分。

    HIGH CONTRAST ELECTRO-OPTIC LIQUID CRYSTAL CAMERA IRIS
    4.
    发明公开
    HIGH CONTRAST ELECTRO-OPTIC LIQUID CRYSTAL CAMERA IRIS 审中-公开
    IRISFÜREINE KONTRASTREICHE ELEKTROOPTISCHEFLÜSSIGKRISTALLKAMERA

    公开(公告)号:EP3049864A1

    公开(公告)日:2016-08-03

    申请号:EP14845410.1

    申请日:2014-09-19

    IPC分类号: G03B7/00

    摘要: A high-contrast electro-optic liquid crystal camera iris (10) provides angle independent transmission for uniform gray shades. The liquid crystal iris comprises a combination of first and second liquid crystal devices (12, 14) arranged in optical series and positioned between optical polarizers (46, 48). The director field (18) of the second liquid crystal device is a mirror image of the director field (16) of the first liquid crystal device, and the first and second liquid crystal devices are placed together so that the azimuthal directions (42) of the surface-contacting directors (18c, 22c) are in parallel alignment at the adjoining or confronting surfaces of the substrates (242, 321) of the first and second liquid crystal devices. The liquid crystal iris provides, therefore, less angular variation of intermediate transmittances compared with that provided by prior art liquid crystal irises.

    摘要翻译: 高对比度电光液晶相机光圈(10)提供角度独立的传输,以实现均匀的灰度。 液晶虹膜包括以光学系列布置并定位在光学偏振器(46,48)之间的第一和第二液晶装置(12,14)的组合。 第二液晶装置的导向器场(18)是第一液晶装置的导向器场(16)的镜像,第一和第二液晶装置放置在一起,使得方位角方向(42)为 表面接触导向器(18c,22c)在第一和第二液晶装置的基板(242,321)的邻接或相对的表面处平行排列。 因此,与现有技术的液晶虹膜相比,液晶虹膜提供较少的中间透射率的角度变化。

    POLARIZATION-INDEPENDENT OPTICAL ISOLATOR
    5.
    发明公开
    POLARIZATION-INDEPENDENT OPTICAL ISOLATOR 审中-公开
    极化独立的光学隔离器

    公开(公告)号:EP3021157A1

    公开(公告)日:2016-05-18

    申请号:EP14822135.1

    申请日:2014-04-30

    IPC分类号: G02B27/28 G02B5/30

    摘要: [Object] To provide a polarization independent optical isolator enabling downsizing of a Faraday element and a magnet. [Solving means] The polarization independent optical isolator comprises: a pair of wedge-shaped birefringent crystal plates (1, 2) provided in an optical path; and a Faraday element (30) made of a paramagnetic body and provided in the optical path between the wedge-shaped birefringent crystal plates. The pair of wedge-shaped birefringent crystal plates have inclined light-transmitting surfaces parallel to each other and non-inclined light-transmitting surfaces parallel to each other. The non-inclined light-transmitting surfaces are disposed to face the Faraday element. The polarization independent optical isolator is characterized in that: the paramagnetic body constituting the Faraday element has such a parallelogrammic cross section that light incident-emitting surfaces of the paramagnetic body are not parallel to the non-inclined light-transmitting surfaces of the pair of wedge-shaped birefringent crystal plates; and a right-angled portion (100) of each of the wedge-shaped birefringent crystal plates and a corresponding obtuse-angled portion (31) of the Faraday element are disposed on the same side with respect to an optical path central axis.

    摘要翻译: 本发明的目的在于提供一种能够实现法拉第元件和磁铁的小型化的偏振无关光隔离器。 [解决方案]偏振无关光学隔离器包括:设置在光路中的一对楔形双折射晶体板(1,2) 以及法拉第元件(30),其由顺磁体构成并设置在楔形双折射晶体板之间的光路中。 这对楔形双折射晶体板具有彼此平行的倾斜透光表面和彼此平行的非倾斜透光表面。 非倾斜透光表面布置成面向法拉第元件。 偏振无关光隔离器的特征在于:构成法拉第元件的顺磁体具有平行四边形截面,使得顺磁体的光入射 - 出射表面不平行于该对楔形的非倾斜光透射表面 形双折射晶体片; 并且每个楔形双折射晶体板的直角部分(100)和法拉第元件的相应的钝角部分(31)布置在相对于光路中心轴的相同侧。

    WAVELENGTH CONVERTER
    8.
    发明授权
    WAVELENGTH CONVERTER 有权
    波长转换器

    公开(公告)号:EP1306718B1

    公开(公告)日:2012-06-06

    申请号:EP00963066.6

    申请日:2000-10-03

    IPC分类号: G02F1/35 H04B10/18

    摘要: A wavelength converter which employs an optical fiber and has high converter efficiency. The polarization planes of a signal light and an exciting light outputted from a laser diode (LD) (103) are respectively controlled by polarization controllers (PC's) (101 and 104) and the phases of the lights are respectively modulated by phase modulators (PM's) (102 and 105) in accordance with modulation signals outputted from an oscillator (110). Then, the output lights from the PM's (102 and 105) are multiplexed by a coupler (106). After the multiplexed signal light and exciting light are amplified by an optical amplifier (EDFA) (107), they are inputted to a dispersion shift fiber (DSP) (108). After wavelength transformation (four light waves mixing (FWM)) is practiced in the DSP, an FWM light is outputted through a band-pass filter (BPF) (109).

    Polarisation-independent optical waveform shaping device
    9.
    发明公开
    Polarisation-independent optical waveform shaping device 有权
    Polarisationsunabhängigeoptische Signalverarbeitungsvorrichtung

    公开(公告)号:EP2367051A1

    公开(公告)日:2011-09-21

    申请号:EP11166520.4

    申请日:2009-04-17

    申请人: Fujitsu Limited

    发明人: Watanabe, Shigeki

    IPC分类号: G02F1/39 H04B10/17

    摘要: An optical signal processing device has a nonlinear optical medium (31) and a polarization controller (42). To the nonlinear optical medium (31), signal light (E sin ) and a first pumping light having (E p ) having a wavelength different from the signal light is input by means of a polarization beam spiltter (41). The nonlinear optical medium is connected between two ports of the polarization beam splitter so as to form a loop. The polarization controller (42) is provided at the input side of the nonlinear optical medium (31) and adjusts the pumping light so that the pumping light is split by the polarization beam splitter into two mutually orthogonal, linearly polarized components having equal powers.

    摘要翻译: 光信号处理装置具有非线性光学介质(31)和偏振控制器(42)。 对于非线性光学介质(31),通过偏振光束传送器(41)输入信号光(E sin)和具有波长不同于信号光的(E p)的第一泵浦光。 非线性光学介质连接在偏振分束器的两个端口之间以形成环路。 偏振控制器(42)设置在非线性光学介质(31)的输入侧,并且调节泵浦光,使得泵浦光被偏振分束器分成具有相等功率的两个相互正交的线性极化分量。

    Modulation of unpolarized light
    10.
    发明公开
    Modulation of unpolarized light 审中-公开
    调制von nicht polarisiertem Licht

    公开(公告)号:EP2249202A1

    公开(公告)日:2010-11-10

    申请号:EP10161511.0

    申请日:2010-04-29

    IPC分类号: G02F1/225 G02B6/10 H04B10/135

    摘要: System and method for effectuating substantially uniform modulation of unpolarized light. Unpolarized light is split into two beams, each beam comprising a different orthogonal mode. The mode of one beam is changed and then the beam is modulated. The other beam is modulated and then its mode is changed. The two modulated beams are combined to form a modulated multi-mode signal.

    摘要翻译: 用于实现非偏振光的基本均匀调制的系统和方法。 非偏振光分为两束,每束均包含不同的正交模式。 改变一个光束的模式,然后对光束进行调制。 另一束被调制,然后改变其模式。 两个调制的波束被组合以形成调制的多模式信号。