公开(公告)号：US20170329127A1

公开(公告)日：2017-11-16

申请号：US15589936

申请日：2017-05-08

申请人： The Chinese University of Hong Kong

发明人： Xudong Liu ,  Zefeng Chen ,  Edward Philip John Parrott ,  Benjamin Ung ,  Jianbin Xu ,  Emma MacPherson

IPC分类号： G02B26/08 ,  G02F1/315 ,  G02F1/01 ,  G01N21/3581 ,  G01J5/08 ,  H01Q15/00 ,  G01J3/42

CPC分类号： G02B26/0816 ,  G01J3/42 ,  G01J5/08 ,  G01N21/3581 ,  G02F1/01 ,  G02F1/315 ,  H01Q15/0006

摘要： A light modulator (e.g., for terahertz radiation) may be constructed using a prism in which light undergoes total internal reflection (TIR) at one surface. A tunable conductive layer is disposed on the TIR surface. The tunable conductive layer can have a conductivity that is dynamically controllable, e.g., by applying a voltage across the tunable conductive layer or by optically pumping the tunable conductive layer. The tunable conductive layer can absorb a portion of the reflected light beam, attenuating the beam, with the attenuation being a function of the electrical conductivity of the tunable conductive layer. The phase of the reflected light beam can also be altered as a function of electrical conductivity of the tunable conductive layer.

公开(公告)号：US09207403B2

公开(公告)日：2015-12-08

申请号：US13882620

申请日：2011-10-25

申请人： Young Sic Kim ,  Jang-Uk Shin ,  Hyung-Myung Moon ,  Jin-Bong Kim

发明人： Young Sic Kim ,  Jang-Uk Shin ,  Hyung-Myung Moon ,  Jin-Bong Kim

IPC分类号： G02B6/35 ,  G02F1/295 ,  G02F1/313 ,  G02F1/315 ,  G02F1/01 ,  H01L21/02 ,  G02F1/015

CPC分类号： G02B6/35 ,  G02B6/3522 ,  G02B6/3548 ,  G02B6/3576 ,  G02B6/3596 ,  G02F1/0147 ,  G02F1/065 ,  G02F1/3137 ,  G02F1/3138 ,  G02F1/315 ,  G02F2001/0154 ,  H01L21/02

摘要： The present invention relates to a total reflection type optical switch using polymer insertion type silica optical waveguides and a manufacturing method thereof. The total reflection type optical switch forms a trench in an intersecting point of the silica optical waveguides having two optic routes, and inserts a polymer into the trench. A total reflection type optical switch has a heater which heats the polymer. The polymer is made of thermo-optic material, and totally reflects an optical signal as a refraction index falls when heated by the heater. In addition, when not heated by the heater, the polymer transilluminates the optical signal. When the polymer is made of electric-optic material, the total reflection type optical switch may have upper and lower electrodes for applying an electric field in the polymer instead of the heater. In this case, the total reflection type optical switch is capable of high speed switching, and is not limited to usages of an optical switch, and may be used as a variable optical attenuator by adjusting the voltage and current being applied. According to the present invention, it is possible to use the difference of the refraction indexes of the silica optical waveguides and the polymer due to temperature changes to transilluminate or totally reflect an optical signal according to changes of the refraction index of the polymer, thereby improving loss characteristics of the optical signal.

摘要翻译： 本发明涉及使用聚合物插入型二氧化硅光波导的全反射型光开关及其制造方法。 全反射型光开关在具有两条光路的二氧化硅光波导的交叉点形成沟槽，并将聚合物插入到沟槽中。 全反射型光开关具有加热聚合物的加热器。 聚合物由热光材料制成，当加热器加热时折射率下降时，全反射光信号。 另外，当加热器不加热时，聚合物透射光信号。 当聚合物由电光材料制成时，全反射型光开关可以具有用于在聚合物中施加电场而不是加热器的上电极和下电极。 在这种情况下，全反射型光开关能够进行高速切换，不限于光开关的用途，也可以通过调整施加的电压和电流而用作可变光衰减器。 根据本发明，可以根据聚合物的折射率的变化，使用二氧化硅光波导和聚合物由于温度变化而导致的透光率差异，从而透射或全反射光信号，从而改善 光信号的损耗特性。

公开(公告)号：US08509576B2

公开(公告)日：2013-08-13

申请号：US13139457

申请日：2009-12-14

申请人： Masahiko Ohta ,  Osamu Ishibashi ,  Fujio Okumura

发明人： Masahiko Ohta ,  Osamu Ishibashi ,  Fujio Okumura

IPC分类号： G02B6/35 ,  G02F1/295

CPC分类号： G02F1/03 ,  G02F1/31 ,  G02F1/315 ,  H04N9/3129 ,  Y10T29/49105

摘要： An optical switch includes electro-optic crystal, and electrode unit including a plurality of electrodes arranged on the same plane in electro-optic crystal to extend in parallel to one another. A refractive index of a part of electro-optic crystal is changed by an electric field generated at electrode unit, thereby switching transmission and reflection of light incident on electro-optic crystal. Electro-optic crystal has an entrance surface through which light enters and an exit surface from which light exits. Electrode unit is located between the entrance surface and the exit surface. An angle θx formed between a longitudinal direction of electrodes and at least one surface from among the entrance surface and the exit surface is set near an angle that satisfies the expression θx=90°−Sin−1[ cos(Tan−1(n))] in a wavelength of light to be modulated.

摘要翻译： 光学开关包括电光晶体，以及电极单元，其包括布置在电光晶体的同一平面上的多个电极，以彼此平行地延伸。 电光晶体的一部分的折射率通过在电极单元处产生的电场而改变，从而切换入射在电光晶体上的光的透射和反射。 电光晶体具有光入射的入射表面和光离开的出射表面。 电极单元位于入口表面和出口表面之间。 在电极的长度方向和入射面和出射面的至少一个面之间形成的角度设定为接近满足以下表达式的角度：tax = 90°-Sin-1 [cos（Tan-1（n） ）]。

公开(公告)号：US20130135708A1

公开(公告)日：2013-05-30

申请号：US13687603

申请日：2012-11-28

申请人： Bruce A. Richman

发明人： Bruce A. Richman

IPC分类号： G02F1/29

CPC分类号： G02F1/29 ,  G02F1/09 ,  G02F1/315 ,  G02F2203/15

摘要： An optical traveling-wave resonator that includes a magneto-optically active member through which an optical beam propagates on a non-planar optical propagation path circuit. The resonator further includes at least one mirror in the optical propagation path circuit and a magnetic field generator for applying a magnetic field to the magneto-optically active member such that resonant optical frequencies of normal modes corresponding to traveling waves in opposite directions are substantially different.

摘要翻译： 一种光学行波谐振器，其包括磁光活性部件，光束在非平面光传播路径电路上传播。 谐振器还包括光传播路径电路中的至少一个反射镜和用于向磁光学有源部件施加磁场的磁场发生器，使得对应于相反方向的行波的正常模式的共振光频率基本上不同。

公开(公告)号：US20130107164A1

公开(公告)日：2013-05-02

申请号：US13284486

申请日：2011-10-28

申请人： Lieven Verslegers ,  Xiao-fan Feng

发明人： Lieven Verslegers ,  Xiao-fan Feng

IPC分类号： G02F1/1335

CPC分类号： G02F1/315 ,  G02B6/0043 ,  G02B6/0061 ,  G02B6/0065 ,  G02B6/0075 ,  G02F1/133603 ,  G02F1/133615 ,  G02F2001/133601 ,  G02F2203/026 ,  G09G3/3406 ,  G09G2360/16

摘要： A liquid crystal display includes a backlight that provides light and selectively modifies the transmission of light from the backlight to the front of the display. The backlight includes a plurality of spaced apart light waveguides and a plurality of selection elements associated with the light waveguides that change the characteristics of the material of the light waveguides to selectively direct the transmission of light toward the liquid crystal layer. The combination of the waveguides and the selection elements provide light to the front of the display in a non-uniform temporal manner and a non-uniform spatial manner during a frame.

摘要翻译： 液晶显示器包括提供光并且有选择地将来自背光源的光的透射改变到显示器前部的背光源。 背光包括多个间隔开的光波导和与光波导相关联的多个选择元件，其改变光波导的材料的特性以选择性地将光的透射转向液晶层。 波导和选择元件的组合在帧期间以非均匀的时间方式和不均匀的空间方式向显示器的前面提供光。

公开(公告)号：US08111444B2

公开(公告)日：2012-02-07

申请号：US12730311

申请日：2010-03-24

申请人： James G. Ko ,  Meritt W. Reynolds

发明人： James G. Ko ,  Meritt W. Reynolds

IPC分类号： G02F1/03

CPC分类号： G02F1/315 ,  G02F1/0316 ,  G02F2201/124 ,  G02F2203/023 ,  G02F2203/24

摘要： An imaging method includes emitting radiation from an illumination source towards a total internal reflection (TIR) modulator. At least one of the pixel regions is controlled to form at least one image pixel on a surface. A first electric potential is imposed on a first pixel region, the first electric potential being associated with a first signal provided by a first electrical conductor to the second set of electrodes associated with the first pixel region, the first electrical conductor extending over a first non-pixel region. A second electric potential is imposed on the first pixel region, the second electric potential being associated with a second signal provided by a second electrical conductor to first set of electrodes associated with the first pixel region, the second electrical conductor extending over a second non-pixel region, wherein the second non-pixel region is different from the first non-pixel region, and the second electric potential is different from the first electric potential. The second electric potential is imposed on the first non-pixel region.

摘要翻译： 成像方法包括从照明源向全内反射（TIR）调制器发射辐射。 至少一个像素区域被控制以在表面上形成至少一个图像像素。 第一电位被施加在第一像素区域上，第一电位与由第一电导体提供的第一信号相关联到与第一像素区域相关联的第二组电极，第一电导体延伸超过第一非导电 像素区域。 第二电位被施加在第一像素区域上，第二电位与由第二电导体提供的第二信号相关联到与第一像素区域相关联的第一组电极， 像素区域，其中所述第二非像素区域与所述第一非像素区域不同，并且所述第二电位不同于所述第一电位。 第二电位被施加在第一非像素区域上。

公开(公告)号：US07428036B2

公开(公告)日：2008-09-23

申请号：US10518898

申请日：2004-10-08

申请人： Christopher Greenway ,  Thomas J. Richards

发明人： Christopher Greenway ,  Thomas J. Richards

IPC分类号： G02F1/13

CPC分类号： G02F1/1326 ,  G02F1/315 ,  G02F2203/06

摘要： A switchable coupler (10) has a first waveguide (15) defining an inlet port (31) for a first unpolarized light input (A) and a first outlet port (32), and also a second waveguide (16) defining an inlet port (41) for a second unpolarized light input (13) and a second outlet port (42). Polarization splitter devices (11, 12) and two electro-optical switches (13,14) are sandwiched between the waveguides (15, 16). The polarization splitter devices (11, 12) are positioned to split the light inputs (A and B) into respective refracted and reflected polarized components (AL and AF; BL and BF), and the electro-optical switch (13) is operable by the application across it of a potential difference (+V) to recombine the polarized components (BL, BF) and to couple them with the light output AT through the first outlet port (32). As shown in FIG. (7), the electro-optical switch (14) is alternatively operable by the application across it of the potential difference (+V) to recombine the polarized components (AL, AF) and to couple them with the light output BT through the second outlet port (42).

摘要翻译： 可切换耦合器（10）具有限定用于第一非偏振光输入（A）和第一出口（32）的入口（31）的第一波导（15），以及限定入口 （41），用于第二非偏振光输入（13）和第二出口（42）。 偏振分离器装置（11,12）和两个电光开关（13,14）夹在波导（15,16）之间。 偏振分离器装置（11,12）被定位成将光输入（A和B）分裂成各自的折射和反射偏振分量（A L1和A B; B 并且电光开关（13）可通过其上的应用电位差（+ V）进行操作，以将极化分量（ 并且通过第一出口（32）将它们与光输出端A T 1耦合。 如图所示。 （7）中，电光开关（14）可交替地通过其上的应用电位差（+ V）进行操作，以将极化分量（A L1，L， / SUB>），并通过第二出口（42）将它们与光输出B SUB连接。

公开(公告)号：US20060221433A1

公开(公告)日：2006-10-05

申请号：US11446858

申请日：2006-06-05

申请人： John Minardi ,  John Janning

发明人： John Minardi ,  John Janning

IPC分类号： G02F1/29

CPC分类号： G02F1/313 ,  G02F1/13 ,  G02F1/1326 ,  G02F1/1393 ,  G02F1/195 ,  G02F1/29 ,  G02F1/315 ,  G02F2202/13 ,  G02F2203/023 ,  G02F2203/026

摘要： An optical switching device contains an active stage coupled to a passive stage. The index of refraction in the active stage is variable to change the entry direction of a light beam into the passive stage, which has a fixed index of refraction. Because the light beam can enter the passive stage at different angles, the exit direction of the light beam from the passive stage can be changed. The resulting optical switch allows switching without any mechanical components.

公开(公告)号：US07050219B2

公开(公告)日：2006-05-23

申请号：US10484151

申请日：2002-06-17

申请人： Koichi Kimura

发明人： Koichi Kimura

IPC分类号： G02B26/08 ,  G02F1/1335

CPC分类号： G02F1/1326 ,  G02B26/02 ,  G02F1/315

摘要： Subjects for the invention are to provide a light-modulating element having an elevated energy efficiency while preventing a decrease in contrast at low cost without using a display technique employing a waveguide or lightguide plate, and to provide a display element capable of producing high-quality display images and an exposure element capable of exposure treatment.In the invention, the light-modulating element comprises: a total-reflection optical member 2 having such a property that at least part of planar incident light introduced into the light-modulating element is totally reflected at an interface (total reflection plane) 22 of a layer constituted by the light-modulating element and the incident light does not substantially go out through the side opposite to the incident-light introduction side; and light-coupling elements 6 which are disposed on the total reflection plane 22 side of the total-reflection optical member 2 and serve to selectively couple with the incident light and take out the same from the total reflection plane 22.

摘要翻译： 本发明的目的是提供一种具有提高的能量效率的光调制元件，同时在不使用使用波导或光导板的显示技术的情况下以低成本防止对比度降低，并且提供能够产生高质量的显示元件 显示图像和能够进行曝光处理的曝光元件。 在本发明中，光调制元件包括：全反射光学元件2，其具有将导入光调制元件的平面入射光的至少一部分全部在全反射面22 由光调制元件和入射光构成的层基本上不会通过与入射光引入侧相反的一侧; 以及设置在全反射光学构件2的全反射面22侧的光耦合元件6，用于选择性地与入射光耦合并从全反射面22取出。

公开(公告)号：US07046425B1

公开(公告)日：2006-05-16

申请号：US10715181

申请日：2003-11-17

申请人： John E. Minardi ,  John L. Janning

发明人： John E. Minardi ,  John L. Janning

IPC分类号： G02F1/29 ,  G02F1/03 ,  G02F1/13 ,  G02F1/295

CPC分类号： G02F1/313 ,  G02F1/13 ,  G02F1/1326 ,  G02F1/1393 ,  G02F1/195 ,  G02F1/29 ,  G02F1/315 ,  G02F2202/13 ,  G02F2203/023 ,  G02F2203/026

摘要： An optical switching device contains an active stage coupled to a passive stage. The index of refraction in the active stage is variable to change the entry direction of a light beam into the passive stage, which has a fixed index of refraction. Because the light beam can enter the passive stage at different angles, the exit direction of the light beam from the passive stage can be changed. The resulting optical switch allows switching without any mechanical components.