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1. 发明公开

EP0078454A3 Interferometric multimode fiber optic switch and modulator 有权
标题翻译：绝缘多模光纤开关和调制器
公开(公告)号：EP0078454A3
公开(公告)日：1984-08-01
申请号：EP82109696
申请日：1982-10-20
申请人： GTE Laboratories Incorporated
发明人： Carlsen, W. John , Melman, Paul
IPC分类号： G02F01/29 , G02F01/21
CPC分类号： G02F1/31 , G02F1/225
摘要： interferometric multimode fiber optic switches and modulators include combinations of various components. Two electro-optical crystals (27, 37) have a dielectric beam splitting coating (48) affixed to portions thereof. The coated portions of the two crystals are juxtaposed. Means (17, 18, 19, 20, 22, 51, 52, 53, 54) are provided for varying the indices of refraction of the two crystals (27, 37) with respect to each other. Light entering into the first crystal (27) and travelling within the two crystals (27, 37) can be switched to selectively exit from one crystal (27) or from the other (37) by varying the index of refraction of one of the crystals (27, 37) with respect to that of the other. By interferometric principle of operation, the phase relation of light is transformed into spacial direction. The crystals (27, 37) can be selected from the group consisting of lithium niobate, lithium tantalate, and barium strontium niobate. The dielectric beam splitting coating (48) can be formed of multiple layers of material such as zirconium oxide and silicon dioxide. The indices of refraction of the crystals (27, 37) are varied by applying electric fields of one polarity at opposite surfaces thereof. Light enters the various crystals (27, 37), and is reflected, and is transmitted at various surfaces (31, 34, 42, 46) thereof so that, upon entering a particular area, within the crystals (27, 37), reinforcement or interference of light can occur.

2. 发明申请

WO1997040420A1 A TUNEABLE FILTER 审中-公开
标题翻译：可调滤波器
公开(公告)号：WO1997040420A1
公开(公告)日：1997-10-30
申请号：PCT/GB1997000980
申请日：1997-04-09
申请人： THE SECRETARY OF STATE FOR DEFENCE IN HER BRITANNIC MAJESTY'S GOVERNMENT OF THE UNITED KINGDOM OF GREAT BRITAIN AND NORTHERN IRELAND , LEWIS, Keith, Loder , MASON, Ian, Robert , SAGE, Ian, Charles
发明人： THE SECRETARY OF STATE FOR DEFENCE IN HER BRITANNIC MAJESTY'S GOVERNMENT OF THE UNITED KINGDOM OF GREAT BRITAIN AND NORTHERN IRELAND
IPC分类号： G02F01/21
CPC分类号： G02F1/216 , G02F1/1334 , G02F1/133553 , G02F2001/213
摘要： A tuneable filter in particular for use in the visible or near infrared wavelength region, comprising a nano dispersed composite material contained within a resonant cavity structure comprising dielectric mirrors (15, 16), where the material is polarisable by means of an applied electric field. In particular, the polarisable material may be a nano phase polymer dispersed liquid crystal (PDLC) material where the diameter of liquid crystal droplets (2) within the material (3) is less than 0.1 mu m, and for use in the visible wavelength region is typically between 10 nm and 50 nm. The filter also comprises means (14) for applying a variable electric field across the faces of the material. The transmission-wavelength characteristic of the filter is such that maxima and minima are shifted in wavelength by varying the electric field.
摘要翻译：特别是用于可见光或近红外波长区域的可调谐滤光器，包括纳入包含电介质反射镜（15,16）的谐振腔结构内的纳米分散复合材料，其中所述材料通过施加的电场是可极化的。特别地，可极化材料可以是纳米相聚合物分散液晶（PDLC）材料，其中材料（3）内的液晶微滴（2）的直径小于0.1μm，并且用于可见光波长区域通常在10nm和50nm之间。过滤器还包括用于在材料的表面上施加可变电场的装置（14）。滤波器的透射波长特性使得最大值和最小值通过改变电场而在波长上移动。

3. 发明申请

WO1986007642A1 OPTICAL COUPLING ASSEMBLY 审中-公开
标题翻译：光耦合装置
公开(公告)号：WO1986007642A1
公开(公告)日：1986-12-31
申请号：PCT/GB1986000352
申请日：1986-06-18
申请人： BRITISH TELECOMMUNICATIONS PUBLIC LIMITED ... , WEBB, Roderick, Peter
发明人： BRITISH TELECOMMUNICATIONS PUBLIC LIMITED ...
IPC分类号： G02F01/21
CPC分类号： G02F1/3517 , H04B10/2504
摘要： An optical coupling assembly which comprises a semiconductor laser amplifier (6) to which an optical control signal and an input signal are fed. The semiconductor laser amplifier (6) is responsive to changes in amplitude of the control signal to produce corresponding phase shifts in the input signal. Optical couplers (1, 7) are positioned upstream and downstream of the laser amplifier (6) so that a proportion of the input signal and control signal are fed along an optical fiber (5) directly from the optical coupler (1) to the coupler (7). The remaining portions of the input signal and control signal are fed to the amplifier (6) where the input signal is phase shifted and then fed to the coupler (7). The arrangement is such that the proportion of the input signal output from each output port (9, 10) of the coupler (7) is selectable by controlling the amplitude of the control signal.

4. 发明公开

EP0260073A3 Electro-optic modulator 失效
标题翻译：电光调制器
公开(公告)号：EP0260073A3
公开(公告)日：1988-10-05
申请号：EP87307812
申请日：1987-09-04
申请人： The Secretary of State for Defence in Her Britannic Majesty's Government of the United Kingdom of Great Britain and
发明人： Saunders, Frances Carolyn
IPC分类号： G02F01/21 , G02F01/13
CPC分类号： G02F1/216 , G02F1/1393 , G02F1/1396 , G02F1/1397 , G02F1/141 , G02F2203/055
摘要： An electro-optic modulator consists of a Fabry-Perot etalon (10) containing intra-cavity liquid crystal material (12) between mirror layers (16). Each mirror (16) bears a respective rubbed polyimide layer (18), which provides homogeneous alignment (20) of the liquid crystal molecules. The mirror layers (16) are connected to a bias voltage source (24), which provide an electrical bias variable between two values both above the threshold for refractive index sensitivity to applied voltage. For nematic materials, this is the Freedricks threshold or transition. The bias variation provides optical modulation of the etalon transmission with a time constant which is much shorter than devices switching between voltages either side of the threshold.

5. 发明公开

EP0172623A3 Optical measuring device using a spectral modulation sensor having an optically resonant structure 失效
标题翻译：使用具有光学谐振结构的光谱调制传感器的光学测量装置
公开(公告)号：EP0172623A3
公开(公告)日：1986-08-20
申请号：EP85304526
申请日：1985-06-25
申请人： TECHNOLOGY DYNAMICS INC
发明人： Saaski, Elric W. , Hartl, James C.
IPC分类号： G01D05/26 , G01N21/45 , G01L11/00 , G01K11/12 , G01J03/26 , G01N21/77 , G02F01/21
CPC分类号： G01L9/0079 , G01D5/268 , G01J3/26 , G01K11/12 , G01N21/45 , G01N21/75 , G01N21/7703 , G01N21/7746 , G01N21/80 , G01N21/81 , G01N2021/0385
摘要： Physical changes induced in the spectral modulation sensor's optically resonant structure by the physical parameter being measured cause micrcshifts of its reflectivity and transmission curves, and of the selected operating segment(s) thereof being used, as a function of the physical parameter being measured. The operating segments have a maximum length and a maximum microshift of less than about one resonance cycle in length for unambiguous output from the sensor. The input measuring light wavelength(s) are selected to fall within the operating segment(s) over the range of values of interest for the physical parameter being measured. The output light from the sensor's optically resonant structure is spectrally modulated by the optically resonant structure as a function of the physical parameter being measured. The spectrally modulated output light it then converted into analog electrical measuring output signals by detection means. In one form, a single optical fiber carries both input light to and output light from the optically resonant structure. When more than one input measuring light wavelength is used, means may also be provided to divide the input light wavelengths into two portions and then take the ratio thereof. This provides several advantages simultaneously, such as enabling longer operating segments and microshifts to be used for greater sensitivity or detection range, and also eliminates certain errors caused by fluctuations in input light intensity or by changes in light intensity caused by optical fiber bending and optical fiber connectors.

6. 发明公开

EP0035299A3 Display device 有权转让
标题翻译：显示设备
公开(公告)号：EP0035299A3
公开(公告)日：1981-09-23
申请号：EP81200186
申请日：1981-02-18
申请人： N.V. Philips' Gloeilampenfabrieken
发明人： te Velde, Ties Siebolt
IPC分类号： G02F01/01 , G02F01/21
CPC分类号： G09F9/372 , G02B26/001 , G02F1/21
摘要： A display device having a transparent supporting plate (10) which is provided with transflective regions (11). At a short distance from the first supporting plate (10) resilient electrodes (14) are connected which are manufactured from a partially reflective material. By varying the distance between the resilient electrodes (10) and the transflective regions (11), the reflection of incident light can be controlled from zero to maximum intensity as a result of the occurring interference. Both monocolour and multicolour pictures can be displayed by means of such a display device. Such a display device is particularly suitable for use in a projection television device.

7. 发明公开

EP0213778A3 Interferometers 失效
标题翻译：干涉
公开(公告)号：EP0213778A3
公开(公告)日：1988-05-04
申请号：EP86306010
申请日：1986-08-04
申请人： THE GENERAL ELECTRIC COMPANY, p.l.c.
发明人： Boucouvalas, Anthony Christos , Georigiou, George Antony
IPC分类号： G01D05/26 , G02F01/21 , G02B06/18 , G02B06/26 , G01J09/02
CPC分类号： G02B6/29352 , G01D5/35303 , G02B6/2821 , G02B6/2835
摘要： A Mach Zehnder interferometer comprises a single optical fibre incorporating two coaxially disposed waveguides (1, 2), e.g. a rod waveguide (1) and a surrounding tube waveguide (2), and having a pair of axially spaced tapered regions forming couplers between the two waveguides at said regions.
摘要翻译：马赫曾德尔干涉仪包括单个光纤，其中包含两个同轴布置的波导（1,2），例如，杆波导（1）和周围管波导（2），并且具有在所述区域处的两个波导之间形成耦合器的一对轴向间隔开的锥形区域。

8. 发明公开

EP0167843A3 Arrangement for the external modulation of radiation emitted by a high-performance CO2 laser 有权转让
标题翻译：由高性能二氧化碳激光器发射的辐射的外部调制装置
公开(公告)号：EP0167843A3
公开(公告)日：1988-01-07
申请号：EP85107077
申请日：1985-06-07
申请人： VEB Kombinat Feinmechanische Werke Halle
发明人： Staupendahl, Gisbert, Dr.sc.nat , Pöhler, Manfred, Dr.rer.nat. , Schindler, Klaus, Dr.rer.nat.
IPC分类号： H01S03/10 , G02F01/21 , B23K26/00
CPC分类号： G02F1/21 , B23K26/06 , B23K26/0604 , B23K26/064 , B23K26/0643

9. 发明公开

EP0092831A3 Optical fiber gyro 失效
标题翻译：光纤陀螺
公开(公告)号：EP0092831A3
公开(公告)日：1986-03-12
申请号：EP83104040
申请日：1983-04-25
申请人： SUMITOMO ELECTRIC INDUSTRIES LIMITED
发明人： Yoshida, Kenichi c/o Sumitomo Electric , Ono, Kimizo c/o Sumitomo Electric , Yokohara, Takashi c/o Sumitomo Electric , Nishiwaki, Yoshikazu c/o Sumitomo Electric , Tsuno, Koichi c/o Sumitomo Electric
IPC分类号： G01C19/64 , G02F01/21
CPC分类号： G01C19/722
摘要： An optical fiber gyro is improved by providing the various optical elements on a single substrate. Optical wave-guides are formed on the substrate by providing diffusion regions, and light branching means for dividing a laser light beam may take the form of a grating, a directional coupler, etc. The light source is typically a laser device bonded to the substrate and the light receiver a photodiode. These elements may be made monolithically with the substrate when the latter is a compound semiconductor such as e.g. GaAs. If desired, one of the wave-guides may be associated with a phase shifter or modulator for detection purposes.

10. 发明申请

WO1997038351A1 DISPLAY DEVICE 审中-公开
标题翻译：显示设备
公开(公告)号：WO1997038351A1
公开(公告)日：1997-10-16
申请号：PCT/US1997005719
申请日：1997-04-08
申请人： INTERNATIONAL RESOURCE MANAGEMENT, INC.
发明人： INTERNATIONAL RESOURCE MANAGEMENT, INC. , NAGAN, Douglas, A.
IPC分类号： G02F01/21
CPC分类号： H04N5/66 , G02F1/21 , Y10S430/146
摘要： A display device that includes a display medium (12) having a planar display area over which an image is generated, a first (30) and second optical point beam (32) each directed in the display medium (12) coplanar with the planar display area, and beam controllers (26, 28) that scan each of the optical point beams to selectively interfere in the display area within a region defined by the intersection of the optical point beams to produce an intensity in the region that has enhanced visibility relative to the individual optical beams propagating in the display medium outside of the region. The beam controller (26, 28) may be an elongated reflector having a reflecting surface upon which a linear array of liquid crystal modulators are controlled to selectively transmit segments of a linear beam incident on the linear array, in order to provide the optical beam by selectively reflecting segments of the linear optical beam into the display medium. The beam controllers include electronic circuitry to scan the optical beams according to a video input signal. The display device preferably employs a laser (16, 18) as the source of the optical point beams.
摘要翻译：一种显示装置，包括具有生成图像的平面显示区域的显示介质（12），每个指示在与平面显示器共面的显示介质（12）中的第一光点（32）和第二光点光束（32）区域和光束控制器（26,28），其扫描每个光点光束以选择性地干涉由光点光束的相交限定的区域内的显示区域，以在该区域中产生强度，该强度具有相对于各个光束在该区域外的显示介质中传播。光束控制器（26,28）可以是具有反射表面的细长反射器，在该反射表面上控制液晶调制器的线性阵列，以选择性地传输入射在线性阵列上的线性光束的部分，以便通过选择性地将线性光束的段反射到显示介质中。光束控制器包括根据视频输入信号扫描光束的电子电路。显示装置优选采用激光（16,18）作为光点光束的源。

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