公开(公告)号：US06798550B1

公开(公告)日：2004-09-28

申请号：US09715867

申请日：2000-11-17

申请人： Feiling Wang ,  Kewen Kevin Li ,  Dean Tsang ,  Hua Jiang

发明人： Feiling Wang ,  Kewen Kevin Li ,  Dean Tsang ,  Hua Jiang

IPC分类号： G02F103

CPC分类号： G02F1/0311 ,  G02F1/055 ,  G02F2001/213 ,  G02F2203/15

摘要： A modulator formed with a solid state electro-optic material having a pixellated structure interconnected to a circuit on a semiconductor substrate. Silicon CMOS integrated circuit that can include random access memories (RAMs) are used as a substrate and interfaced to solid state electro-optic materials coated thereon. In particular, the electro-optic modulators are controlled by RAM cells to produce a modulation of reflected light. SRAMs can be used with connection to the SRAM cell flip-flop. DRAMs can be used with the modulator replacing the DRAM storage capacitor. The SLM thus formed can be connected to a digital computer and controlled as if were a being written to as a memory, but other IC structures can also be used. In order to enhance the modulation effects, the electro-optic material is used as the spacer for a Fabry-Perot etalon structure that is also deposited on the semiconductor substrate. PLZT is a suitable electro-optic material.

摘要翻译： 由具有与半导体衬底上的电路互连的像素化结构的固体电光材料形成的调制器。可以包括随机存取存储器（RAM）的硅CMOS集成电路用作衬底并且与固态电光 涂覆在其上的材料。 特别地，电光调制器由RAM单元控制以产生反射光的调制。 SRAM可以连接到SRAM单元触发器。 DRAM可用于替代DRAM存储电容器的调制器。 如此形成的SLM可以连接到数字计算机，并且被控制好像被写入作为存储器，但也可以使用其他IC结构。 为了增强调制效果，电光材料被用作也沉积在半导体衬底上的法布里 - 珀罗标准具结构的间隔物。 PLZT是一种合适的电光材料。

公开(公告)号：US06522456B2

公开(公告)日：2003-02-18

申请号：US09848766

申请日：2001-05-04

申请人： Qiushui Chen ,  Hua Jiang ,  Yingyin Zou ,  Dean Tsang ,  Paul Melman ,  Feiling Wang ,  Guanghai Jin ,  Jing Zhao

发明人： Qiushui Chen ,  Hua Jiang ,  Yingyin Zou ,  Dean Tsang ,  Paul Melman ,  Feiling Wang ,  Guanghai Jin ,  Jing Zhao

IPC分类号： G02F100

CPC分类号： G02F1/21 ,  G02F2001/212 ,  G02F2202/40 ,  G02F2203/055 ,  G02F2203/48

摘要： An apparatus and method for filtering an optical input is disclosed. In an illustrative embodiment, an optical input is split into polarization components along separate paths. The polarization components are then fed into a first electro-optic device that includes a set of electrodes across which a voltage is applied to adjust a wavelength transmission characteristic of the device. A section of the first device positioned between the electrodes preferably has a birefringence that is adjusted depending on the voltage applied across the electrodes. The adjusted components of the optical input are thereafter combined to produce an optical output. Accordingly, the optical input can be attenuated based on the voltage applied to electrodes of the first electro-optic device.

公开(公告)号：US06404538B1

公开(公告)日：2002-06-11

申请号：US09695538

申请日：2000-10-24

申请人： Qiushui Chen ,  Gary Y. Wang ,  Paul Melman ,  Kevin Zou ,  Hua Jiang ,  Run Zhang ,  Jing Zhao ,  Dean Tsang ,  Feiling Wang

发明人： Qiushui Chen ,  Gary Y. Wang ,  Paul Melman ,  Kevin Zou ,  Hua Jiang ,  Run Zhang ,  Jing Zhao ,  Dean Tsang ,  Feiling Wang

IPC分类号： G02F100

CPC分类号： G02F1/055 ,  G02F1/0555 ,  G02F1/0556 ,  G02F2201/17 ,  G02F2203/06 ,  G02F2203/48

摘要： An optical modulator is provided to control the intensity of a transmitted or reflected light. In a transmission mode, a separator splits arbitrarily polarized light into two polarization rays and one is made to travel a separate path from the other. A recombiner causes the two rays to recombine at an output unless an electro-optic phase retarder changes the polarization of the two rays, in which case, both of them miss the output by an amount which is a function of the voltage on the retarder. A normally-off version with low polarization mode dispersion is obtained by changing the orientation of the recombiner. A normally-on version with low polarization mode dispersion is obtained with a passive polarization direction rotator. Similar results can be obtained in a reflection mode where the input and output are on the same side of the modulator. Versions using a GRIN lens are particularly suited to modulation of light out of and back into fiber-optic cables. The device can be operated as a variable optical attenuator, an optical switch, or a high speed modulator and is insensitive to polarization of the input light. A preferred material for the phase retarder is a hot-pressed ceramic lead lanthanum zirconate titanate composition.

摘要翻译： 提供光调制器以控制透射或反射光的强度。 在透射模式中，分离器将任意偏振光分离成两个偏振光，一个偏振光从另一个行进。 重组器会导致两条射线在输出端重新组合，除非电光相位延迟器改变两个射线的极化，在这种情况下，它们都将输出误差减去延迟器上的电压的函数。 通过改变重组器的取向，获得具有低偏振模色散的常关型。 使用无源偏振方向旋转器获得具有低偏振模色散的常导版本。 在输入和输出位于调制器的同一侧的反射模式下可以获得类似的结果。 使用GRIN镜头的版本特别适用于调制光纤到光纤的光纤。 该器件可以作为可变光衰减器，光开关或高速调制器操作，并且对输入光的偏振不敏感。 用于相缓凝剂的优选材料是热压陶瓷铅锆酸镧锆酸盐组合物。

公开(公告)号：US06330097B1

公开(公告)日：2001-12-11

申请号：US09288439

申请日：1999-04-08

申请人： Qiushui Chen ,  Gary Y. Wang ,  Paul Melman ,  Kevin Zou ,  Hua Jiang ,  Run Zhang ,  Jing Zhao ,  Dean Tsang ,  Feiling Wang

发明人： Qiushui Chen ,  Gary Y. Wang ,  Paul Melman ,  Kevin Zou ,  Hua Jiang ,  Run Zhang ,  Jing Zhao ,  Dean Tsang ,  Feiling Wang

IPC分类号： G02B2600

CPC分类号： G02F1/055 ,  G02F1/0555 ,  G02F1/0556 ,  G02F2201/17 ,  G02F2203/06 ,  G02F2203/48

摘要： An optical modulator is provided to control the intensity of a transmitted or reflected light. In a transmission mode, a separator splits arbitrarily polarized light into two polarization rays and one is made to travel a separate path from the other. A recombiner causes the two rays to recombine at an output unless an electro-optic phase retarder changes the polarization of the two rays, in which case, both of them miss the output by an amount which is a function of the voltage on the retarder. A normally-off version with low polarization mode dispersion is obtained by changing the orientation of the recombiner. A normally-on version with low polarization mode dispersion is obtained with a passive polarization direction rotator. Similar results can be obtained in a reflection mode where the input and output are on the same side of the modulator. Versions using a GRIN lens are particularly suited to modulation of light out of and back into fiber-optic cables. The device can be operated as a variable optical attenuator, an optical switch, or a high speed modulator and is insensitive to polarization of the input light. A preferred material for the phase retarder is a hot-pressed ceramic lead lanthanum zirconate titanate composition.

摘要翻译： 提供光调制器以控制透射或反射光的强度。 在透射模式中，分离器将任意偏振光分离成两个偏振光，一个偏振光从另一个行进。 重组器会导致两条射线在输出端重新组合，除非电光相位延迟器改变两个射线的极化，在这种情况下，它们都将输出误差减去延迟器上的电压的函数。 通过改变重组器的取向，获得具有低偏振模色散的常关型。 使用无源偏振方向旋转器获得具有低偏振模色散的常导版本。 在输入和输出位于调制器的同一侧的反射模式下可以获得类似的结果。 使用GRIN镜头的版本特别适用于调制光纤到光纤的光纤。 该器件可以作为可变光衰减器，光开关或高速调制器操作，并且对输入光的偏振不敏感。 用于相缓凝剂的优选材料是热压陶瓷铅锆酸镧锆酸盐组合物。