公开(公告)号：US20040081392A1

公开(公告)日：2004-04-29

申请号：US10280307

申请日：2002-10-25

Inventor： Shifang Li ,  Qing Shao

IPC: G02B006/35

CPC classification number: G02F1/09 ,  G02F1/31 ,  G02F2201/02 ,  G02F2202/40 ,  G02F2203/02

Abstract: A magneto-optical switch includes a birefringent crystal that receives a light beam, a half-wave plate pair that receives the light beam from the birefringent crystal, a Faraday rotator that receive the light beam from the half-wave plate, a prism that receives the light beam from the Faraday rotator, and a reflective surface that receives the light beam from the Faraday rotator. The Faraday rotator receives an electromagnetic field to change the polarization of the light beam as it passes through the Faraday rotator.

Abstract translation: 磁光开关包括接收光束的双折射晶体，接收来自双折射晶体的光束的半波片对，接收来自半波片的光束的法拉第旋转器，接收来自半波片的光束的棱镜 来自法拉第旋转器的光束和接收来自法拉第旋转器的光束的反射表面。 法拉第转子接收电磁场以改变光束在通过法拉第旋转器时的极化。

公开(公告)号：US06647159B1

公开(公告)日：2003-11-11

申请号：US09683617

申请日：2002-01-25

Applicant: Duane Anthony Satorius

Inventor： Duane Anthony Satorius

IPC: G02F1335

CPC classification number: G02F1/113 ,  B82Y20/00 ,  G02B6/14 ,  G02F1/01716 ,  G02F1/125 ,  G02F2201/02 ,  G02F2203/055

Abstract: Device whereby one or more bands of optical wavelengths may be selected for further transmission. All light within the optical bandwidth of operation is first coupled from the core mode of an optical fiber to a specific cladding mode by a chirped broadband cladding mode coupler. These cladding mode lightwaves then enter a narrow-band core mode coupler whereby selected optical bands of wavelengths, tuned by the tension on the optical fiber, are re-coupled back into the core of the optical fiber. The chirped broadband cladding mode coupler is isolated from the narrow-band core mode coupler by an acoustic absorber to limit the acoustic interaction between them.

Abstract translation: 可以选择一个或多个光波长带进行进一步传输的装置。 首先，通过啁啾的宽带包层模式耦合器，在光学光学带宽内的所有光从光纤的核心模式耦合到特定的包层模式。 这些包层模式光波然后进入窄带核心模式耦合器，由此通过光纤上的张力调谐的所选择的波长光谱带重新耦合回光纤的核心。 啁啾的宽带包层模式耦合器通过吸声器与窄带芯模耦合器隔离，以限制它们之间的声学​​相互作用。

公开(公告)号：US20030198447A1

公开(公告)日：2003-10-23

申请号：US10241993

申请日：2002-09-12

Inventor： Jongbae Kim ,  Sahnggi Park ,  Yonggyu Choi ,  Jungjin Ju

IPC: G02B006/02

CPC classification number: G02F1/3558 ,  G02B6/29394 ,  G02F2201/02

Abstract: The present invention includes a poled fiber using the second-order nonlinear optical phenomenon, a method of fabricating the poled fiber, and a dispersion compensator to compensate for the chromatic dispersion of an optical fiber. The method of fabricating the poled fiber according to the present invention comprises, a step of covering an etching-resistant material on the portions of the cladding excluding the portions to be grooved in the longitudinal direction of the fiber, a step of etching the bare portions of the cladding excluding the portions covered with the etching-resistant material, a step of evaporating electrodes on the etched portions, and a step of applying voltage to the evaporated electrodes. According to the fabrication method of the poled fibre as described above, along with the use of a general optical fibre instead of a special fiber, since the distance between electrodes around the core can be appropriately controlled, a high electro-optic coefficient can be induced to the poled fibre.

Abstract translation: 本发明包括使用二阶非线性光学现象的极化光纤，制造极化光纤的方法和用于补偿光纤色散的色散补偿器。 根据本发明的制造极化纤维的方法包括：在除了在纤维的纵向方向上开槽的部分之外的包覆部分上覆盖耐蚀刻材料的步骤，蚀刻裸露部分的步骤 的除去被耐蚀刻材料覆盖的部分的包层，在蚀刻部分上蒸发电极的步骤以及向蒸发的电极施加电压的步骤。 根据如上所述的极化纤维的制造方法，通过使用普通光纤代替特殊光纤，由于可以适当地控制芯周围的电极之间的距离，因此可以诱导高的电光系数 到极化纤维。

公开(公告)号：US20020154265A1

公开(公告)日：2002-10-24

申请号：US09838235

申请日：2001-04-20

Inventor： Laurence M. Hubby JR.

IPC: G02F001/1333

CPC classification number: G02F1/172 ,  G02F2201/02

Abstract: The present invention replaces liquid crystal light control elements in fiber-optic faceplate liquid crystal displays (LCD) with suspended particle devices (SPDs), and provides for passive light control without the need for either polarized light or special alignment layers. A fluid or film containing suspended particles may be asymmetric in shape so that their optical density depends strongly upon their orientation. The orientation of the particles within the fluid can be manipulated by an application of an electric field, so that the fluid or film may appear to be transparent to both polarizations of light when the electric field is applied, and opaque when the electric field is removed and the orientation of the particles is allowed to randomize naturally.

Abstract translation: 本发明用悬浮颗粒装置（SPD）代替了光纤面板液晶显示器（LCD）中的液晶光控制元件，并提供无源光控制，而不需要偏振光或特殊对准层。 含有悬浮颗粒的流体或薄膜的形状可能不对称，使得它们的光密度强烈地取决于它们的取向。 可以通过施加电场来操纵流体内的颗粒的取向，使得当施加电场时，流体或膜可能对光的两个偏振显示为透明的，并且当去除电场时，不透明的 并且允许颗粒的取向自然地随机化。

公开(公告)号：US06449404B1

公开(公告)日：2002-09-10

申请号：US09559066

申请日：2000-04-28

Applicant: Reza Paiam

Inventor： Reza Paiam

IPC: G02B626

CPC classification number: G02B6/3576 ,  G02B5/28 ,  G02B6/122 ,  G02B6/1221 ,  G02B6/125 ,  G02B6/266 ,  G02B6/2813 ,  G02B6/29358 ,  G02B6/2937 ,  G02B6/29395 ,  G02B6/3512 ,  G02B6/355 ,  G02B6/3594 ,  G02B26/001 ,  G02B2006/121 ,  G02F1/0147 ,  G02F1/065 ,  G02F1/3132 ,  G02F1/3136 ,  G02F1/3137 ,  G02F2001/217 ,  G02F2201/02 ,  G02F2203/48

Abstract: An optical switch is disclosed which operates as binary or digital switch. Two glass waveguides are arranged in an X-like pattern such that they approach each other at a waist region without crossing over one another. A polymer region contacts both waveguides at this waist region and has a refractive index that can be changed more than that of the adjacent glass by applying heat. The refractive index of the polymer can be varied from an index which is same as the glass waveguides; to be less than that of the glass in which case the polymer acts as a cladding. When the index of the polymer is lower than that of the glass through the application of heat, light launched into one of the waveguides continues along the waveguide via total internal reflection and no light crosses the glass polymer boundary. When the index of the polymer is the same as the glass light propagates through the polymer from the first waveguide and crosses the polymer boundary so that switching occurs from the first waveguide to the second.

Abstract translation: 公开了一种用作二进制或数字开关的光开关。 两个玻璃波导以X形图案布置，使得它们在腰部区域彼此接近而不彼此交叉。 聚合物区域在该腰部区域处接触两个波导，并且具有通过施加热量而可以比相邻玻璃的折射率更多的折射率。 聚合物的折射率可以从与玻璃波导相同的指数变化; 小于玻璃的情况，在这种情况下，聚合物作为包层。 当通过施加热量使聚合物的折射率低于玻璃的折射率时，发射到波导之一的光通过全内反射沿着波导继续，并且没有光穿过玻璃聚合物边界。 当聚合物的折射率与玻璃光从第一波导传播通过聚合物相同并且穿过聚合物边界时，使得从第一波导到第二波导的转换。

公开(公告)号：US06330104B1

公开(公告)日：2001-12-11

申请号：US09371989

申请日：1999-08-11

Applicant: Kwang S. Kim ,  Liyan Zhang

Inventor： Kwang S. Kim ,  Liyan Zhang

IPC: G02F1365

CPC classification number: G02F1/3536 ,  G02F1/365 ,  G02F2201/02

Abstract: A wavelength conversion apparatus and method uses four wave mixing of a first wavelength and a control wavelength in an optical fiber to convert the first wavelength to a desired wavelength. Four wave mixing is produced by operating the optical fiber at a predetermined input power density and by using a fiber length which provides substantial Raman gain. The first wavelength is converted to a higher wavelength by using the higher wavelength four wave mixing signal and converted to a lower wavelength by using the lower wavelength four wave mixing signal.

Abstract translation: 波长转换装置和方法使用光纤中的第一波长和控制波长的四波混频将第一波长转换成期望的波长。 通过以预定的输入功率密度操作光纤并且通过使用提供显着拉曼增益的光纤长度来产生四波混频。 通过使用较高波长的四波混频信号将第一波长转换成更高的波长，并通过使用较低波长的四波混频信号将其转换成较低的波长。

公开(公告)号：US06285504B1

公开(公告)日：2001-09-04

申请号：US09559183

申请日：2000-04-27

Applicant: Mart Diemeer

Inventor： Mart Diemeer

IPC: G02B2700

CPC classification number: G02B6/3576 ,  G02B5/28 ,  G02B6/122 ,  G02B6/1221 ,  G02B6/125 ,  G02B6/266 ,  G02B6/2813 ,  G02B6/29358 ,  G02B6/2937 ,  G02B6/29395 ,  G02B6/3512 ,  G02B6/355 ,  G02B6/3594 ,  G02B26/001 ,  G02B2006/121 ,  G02F1/0147 ,  G02F1/065 ,  G02F1/3132 ,  G02F1/3136 ,  G02F1/3137 ,  G02F2001/217 ,  G02F2201/02 ,  G02F2203/48

Abstract: The present invention relates to a variable optical filter that can be used to filter an incoming signal, attenuate an incoming signal or in one configuration switch an incoming signal from one path to another. The present invention has found that an accurate and economical variable optical filter can be created by using an elastomeric material having a high coefficient of expansion in cooperation with a means for locally varying the temperature of the elastomeric material as an actuator for moving a reflective surface within the optical filter. The actuator can be operated in a controlled manner for example, to effect a tilt of the reflective surface for switching or attenuating an optical signal, or to vary the resonant wavelengths of a resonant cavity between partially reflective surfaces. In accordance with the invention there is provided, a variable optical filter comprising an input port and an output port; a first at least partially reflective disposed to receive a beam of light launched from the input port; an elastomeric material for supporting and varying the position of the at least partially reflective surface with respect to the input port; a heater for applying variable amounts of heat to the elastomeric material to move or pivot the at least partially reflective surface relative to the input port; and, control means for controlling the heater and for providing a signal to apply variable amounts of heat.

Abstract translation: 本发明涉及一种可变滤波器，其可用于滤波输入信号，衰减输入信号或在一个配置中将输入信号从一个路径切换到另一个路径。 本发明已经发现，通过使用具有高膨胀系数的弹性体材料，可以与用于局部地改变弹性材料的温度的装置一起作为用于移动内部的反射表面的致动器来产生精确和经济的可变滤光器 光滤波器。 致动器可以以例如控制的方式操作，以实现用于切换或衰减光信号的反射表面的倾斜，或改变部分反射表面之间的谐振腔的谐振波长。 根据本发明，提供了一种包括输入端口和输出端口的可变滤光器; 第一至少部分反射设置成接收从输入端口发射的光束; 用于相对于所述输入端口支撑和改变所述至少部分反射表面的位置的弹性体材料; 加热器，用于向所述弹性体材料施加可变量的热量以使所述至少部分反射表面相对于所述输入端口移动或枢转; 以及用于控制加热器并提供信号以应用可变量的热量的控制装置。

公开(公告)号：US06224216B1

公开(公告)日：2001-05-01

申请号：US09507260

申请日：2000-02-18

Applicant: Fred Parker ,  Mark Peterson

Inventor： Fred Parker ,  Mark Peterson

IPC: B03B2114

CPC classification number: G02B6/0028 ,  G02B6/0006 ,  G02B6/0068 ,  G02B6/06 ,  G02B6/3644 ,  G02B6/3672 ,  G02B6/4249 ,  G02B6/4298 ,  G02F1/133524 ,  G02F1/133609 ,  G02F2001/133622 ,  G02F2001/133628 ,  G02F2201/02 ,  G03B21/14 ,  G03B21/2033 ,  G03B21/2093 ,  G03B33/06 ,  G03B33/12 ,  G09G3/3413 ,  G09G2310/0235 ,  H04N5/66 ,  H04N5/7441 ,  H04N5/7458 ,  H04N9/12 ,  H04N9/3155 ,  H04N9/3164

Abstract: In a single path embodiment of a multimedia projector (30) of the present invention, the light emitted from blue, green, and red generally monochromatic LEDs (72) or LED arrays (70) is propagated through optical fibers (76) and then integrated through an optical integrator (40). A display controller (56) receives image data from a personal computer (58) and converts the data to color frame sequential data delivered to a common display device (44). The display controller (56) synchronizes the data with ON/OFF signals conveyed to an LED power supply (34). Because the synchronization is entirely electronic, the frame sequential information can be cycled much faster and more accurately than can be accomplished with a color wheel system (10). In a multiple path embodiment of a multimedia projector (120) of the present invention, the light emitted from blue, green, and red generally monochromatic LEDs (72) or LED arrays (70) is propagated along separate respective optical paths (36b, 36g, 36r) through optical fibers (76) and then integrated through an optical integrator (40). A display controller (56) receives image data from a personal computer (58) and converts the data to color frame sequential data delivered to respective separate display devices (44b, 44g, 44r) whose output is coupled into a combiner (122). The display controller (56) synchronizes the data between the separate display devices (44b, 44g, 44r) to form a composite image. In this embodiment, all three sets of LEDs (72) can be left ON continuously. Other LED array color combinations can be employed with or without an additional white light path.

Abstract translation: 在本发明的多媒体投影仪（30）的单一路径实施例中，从蓝色，绿色和红色通常单色LED（72）或LED阵列（70）发射的光通过光纤（76）传播，然后集成 通过光学积分器（40）。 显示控制器（56）从个人计算机（58）接收图像数据，并将数据转换成传送到公共显示设备（44）的彩色帧顺序数据。 显示控制器（56）将数据与传送到LED电源（34）的ON / OFF信号同步。 因为同步是完全电子的，所以帧序列信息可以比使用色轮系统（10）可以更快更准确地循环。 在本发明的多媒体投影仪（120）的多路径实施例中，从蓝色，绿色和红色通常单色LED（72）或LED阵列（70）发射的光沿独立的相应光路（36b，36g）传播 ，36r）通过光纤（76），然后通过光学积分器（40）集成。 显示控制器（56）从个人计算机（58）接收图像数据，并将数据转换成输出耦合到组合器（122）中的各个分立显示设备（44b，44g，44r）的彩色帧顺序数据。 显示控制器（56）使分离的显示设备（44b，44g，44r）之间的数据同步以形成合成图像。 在本实施例中，所有三组LED（72）可以被连续地接通。 其他LED阵列颜色组合可以与或不带有额外的白光路径一起使用。

公开(公告)号：US5007705A

公开(公告)日：1991-04-16

申请号：US456449

申请日：1989-12-26

Applicant: William W. Morey ,  Fred J. Leonberger ,  William H. Glenn ,  Gerald Meltz

Inventor： William W. Morey ,  Fred J. Leonberger ,  William H. Glenn ,  Gerald Meltz

IPC: G02B26/00 ,  G02B6/34 ,  G02F1/01 ,  G02F1/125

CPC classification number: G02B6/29322 ,  G02B6/022 ,  G02B6/02204 ,  G02B6/29395 ,  G02F1/0115 ,  G02F1/0126 ,  G02F1/0131 ,  G02F1/0147 ,  G02F1/125 ,  G02F2201/02 ,  G02F2201/307 ,  G02F2203/055

Abstract: A variable light filtering arrangement includes at least one optical fiber section including a waveguiding core, and at least one permanent Bragg grating region in the optical fiber section. The grating region includes a plurality of grating elements constituted by periodic refractive index variations of a predetermined initial periodicity and cumulatively redirecting, of the light launched into the core for guided propagation therein, that having an axial wavelength within a narrow band around a central wavelength that is determined by the periodicity and refractive index variations of the grating elements. At least one of the periodicity and refractive index variations of the grating region is controlledly modified in such a manner as to temporarily change the central wavelength within a predetermined wavelength range.

Abstract translation: 可变光滤波装置包括至少一个包括波导芯的光纤部分和光纤部分中的至少一个永久布拉格光栅区域。 光栅区域包括多个光栅元件，其由预定的初始周期的周期性折射率变化构成，并且累积地重定向发射到芯中的光，用于在其中引导传播，其具有围绕中心波长的窄带内的轴向波长， 由光栅元件的周期性和折射率变化决定。 光栅区域的周期性和折射率变化中的至少一种可以以预定波长范围内暂时改变中心波长的方式进行可变地修改。

公开(公告)号：US11906668B2

公开(公告)日：2024-02-20

申请号：US17513563

申请日：2021-10-28

Applicant: BEIJING VOYAGER TECHNOLOGY CO., LTD.

Inventor： Chao Wang ,  Youmin Wang ,  Yue Lu ,  Lingkai Kong

IPC: G01C3/08 ,  G01S7/484 ,  H01S3/23 ,  H01S3/00 ,  G02F1/35 ,  G02F1/355 ,  G02F1/37 ,  G01S7/481 ,  H01S3/067

CPC classification number: G01S7/484 ,  G01S7/4815 ,  G02F1/353 ,  G02F1/3551 ,  G02F1/37 ,  H01S3/0092 ,  H01S3/067 ,  H01S3/2391 ,  G02F1/354 ,  G02F2201/02

Abstract: Embodiments of the disclosure provide an apparatus for emitting laser light and a system and method for detecting laser light returned from an object. The system includes a transmitter and a receiver. The transmitter includes one or more laser sources, at least one of the laser sources configured to provide a respective native laser beam having a wavelength above 1,100 nm. The transmitter also includes a wavelength converter configured to receive the native laser beams provided by the laser sources and convert the native laser beams into a converted laser beam having a wavelength below 1,100 nm. The transmitter further includes a scanner configured to emit the converted laser beam to the object in a first direction. The receiver is configured to detect a returned laser beam having a wavelength below 1,100 nm and returned from the object in a second direction.