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1. 发明授权

US06529646B1 Optical modulator 有权
标题翻译：光调制器
公开(公告)号：US06529646B1
公开(公告)日：2003-03-04
申请号：US09647382
申请日：2000-12-21
申请人： David R Wight , Nicola Shaw , William J Stewart
发明人： David R Wight , Nicola Shaw , William J Stewart
IPC分类号： G02F101
CPC分类号： G02F1/01 , G02F1/0147 , G02F1/025 , G02F1/0344 , G02F1/0356 , G02F1/2255 , G02F1/2257 , G02F2001/0155
摘要： An optical modulator includes an optical input; an optical output; at least one optical path connecting the optical input and output; and an electrode structure for selectively changing the optical characteristic of a part of the at least one optical path in response to a control signal such as to modulate light passing along the optical path. The optical path further includes a structure which slows the passage of light along the part of the optical path to enhance the modulation effect of the modulator for a given length of optical path. Preferably the structure comprises a sequence of coupled resonator structures in which each resonator structure is defined by a pair of partially reflecting planes which define an optical resonator cavity within the optical parts.
摘要翻译：光调制器包括光输入; 光输出; 连接光输入和输出的至少一个光路; 以及电极结构，用于响应于控制信号选择性地改变所述至少一个光路的一部分的光学特性，以调制沿着光路通过的光。光路还包括一种结构，其缓慢沿着光路部分的光的通过，以增强调制器在给定长度的光路上的调制效果。优选地，该结构包括一系列耦合谐振器结构，其中每个谐振器结构由在光学部件内限定光学谐振腔的一对部分反射平面限定。

2. 发明授权

US06385353B1 Electrically tuneable optical filter 有权
标题翻译：电可调滤光片
公开(公告)号：US06385353B1
公开(公告)日：2002-05-07
申请号：US09529541
申请日：2000-04-14
申请人： Colin M Boyne , John M Heaton , David R Wight
发明人： Colin M Boyne , John M Heaton , David R Wight
IPC分类号： G02F1035
CPC分类号： G02F1/011 , G02B6/12011 , G02B6/12033 , G02B6/2861 , G02B6/29301
摘要： A device for spatially separating components of frequency in a primary radiation beam comprising means for separating the primary radiation beam into a plurality of secondary radiation beams, a plurality of electrically biasable waveguides forming a waveguide array, each for transmitting a secondary radiation beam to an output, wherein each waveguide has an associated optical delay line having a corresponding optical delay time, wherein each of the optical delay times is different. The device also comprises means for applying a variable electric field across each of the waveguides such that the phase of the secondary radiation beams transmitted through each may be varied by varying the electric field. The secondary radiation beams output from each of the waveguides interfere in a propagation region with a secondary radiation beam output from at least one of the other waveguides so as to form an interference pattern comprising one or more maximum at various positions in the propagation region.
摘要翻译：一种用于在主辐射束中空间分离频率分量的装置，包括用于将主辐射束分离成多个次辐射束的装置，形成波导阵列的多个电偏置波导，每个用于将次辐射束发射到输出其中每个波导具有相关联的光学延迟线，其具有对应的光学延迟时间，其中每个光学延迟时间是不同的。该装置还包括用于在每个波导上施加可变电场的装置，使得透过每个波导的二次辐射束的相位可以通过改变电场来改变。从每个波导输出的次级辐射束在传播区域中与从其它波导中的至少一个波导输出的次级辐射束相互干扰，从而形成包括传播区域中各个位置处的一个或多个最大值的干涉图案。

3. 发明授权

US06829278B1 Light emitting device and transistor 有权
标题翻译：发光元件和晶体管
公开(公告)号：US06829278B1
公开(公告)日：2004-12-07
申请号：US09445991
申请日：1999-12-17
申请人： Michael B Allenson , Stephen G Ayling , David R Wight
发明人： Michael B Allenson , Stephen G Ayling , David R Wight
IPC分类号： H01S500
CPC分类号： H01S5/4025 , H01S5/02276 , H01S5/0262 , H01S5/4018
摘要： A light emitting device for generating at least one beam of output radiation from an input current of electrons comprises at least two p-n junction devices for converting the input current of electrons into photons, wherein the p-n junction devices are electrically connected in series such that the input impedance of the light emitting device is substantially equal to the sum of the individual impedance of the p-n junction devices. Hence the quantum efficiency of the light emitting device is substantially equal to the sum of the individual quantum efficiencies of the p-n junction devices. In a preferred embodiment, the light emitting device comprises a plurality of p-n junction devices connected in series such that the input impedance of the light emitting device is equal to 50 &OHgr; without the need for additional circuitry or impedance matching elements. The device may therefore have a 50 &OHgr; impedance over a broad frequency band, limited by the modulation frequency limit of the individual p-n junctions. Typically, the p-n junctions may be AlGaAs, AlGaInP, AlGaInAs or AlGaInAsp laser diode devices. The invention also relates to an optically coupled bipolar transistor device.
摘要翻译：用于从电子的输入电流产生至少一束输出辐射的发光器件包括用于将电子的输入电流转换成光子的至少两个pn结器件，其中pn结器件串联电连接，使得输入发光器件的阻抗基本上等于pn结器件的单独阻抗的总和。因此，发光器件的量子效率基本上等于p-n结器件的各个量子效率之和。在优选实施例中，发光器件包括串联连接的多个p-n结器件，使得发光器件的输入阻抗等于50Ω，而不需要额外的电路或阻抗匹配元件。因此，器件可能在宽频带上具有50Ω的阻抗，受到各个p-n结的调制频率限制的限制。通常，p-n结可以是AlGaAs，AlGaInP，AlGaInAs或AlGaInAsp激光二极管器件。本发明还涉及一种光耦合双极晶体管器件。

4. 发明授权

US06978067B2 Horizontal access semiconductor photo detector 失效
标题翻译：水平存取半导体光电探测器
公开(公告)号：US06978067B2
公开(公告)日：2005-12-20
申请号：US10276993
申请日：2001-05-18
申请人： David C W Herbert , Edward T R Chidley , Roger T Carline , Weng Y Leong , David R Wight , David J Robbins , John M Heaton
发明人： David C W Herbert , Edward T R Chidley , Roger T Carline , Weng Y Leong , David R Wight , David J Robbins , John M Heaton
IPC分类号： H01L31/107 , G02B6/42 , G02F1/01 , H01L31/0232 , H01L31/0352 , H01L31/105 , H01S5/10
CPC分类号： H01L31/035254 , B82Y20/00 , H01L31/035281 , H01L31/105 , H01L31/1075 , Y02E10/50
摘要： A horizontal access semiconductor photo detector (2) comprises a horizontal light absorbing layer (8) for converting light into photo-current which layer is configured to confine light within it in whispering gallery modes of propagation. The detector is configured to have a first waveguide portion (18) and a second light confining portion (20, 21) arranged such that the waveguide portion couples light into the detector and transfers light into the light confining portion so as to excite whispering gallery modes of propagation around the light confining portion. The light absorbing layer may be part of the light confining portion or alternatively light can be coupled into the light confining portion or alternatively light can be coupled into the light absorbing layer from the light confining portion by evanescent coupling. The excitation of whispering gallery modes within the light absorbing layer significantly increases the effective absorption coefficient of the light absorbing layer.
摘要翻译：水平存取半导体光电检测器（2）包括用于将光转换为光电流的水平光吸收层（8），该层被配置为将灯限制在耳语中的传播模式中。检测器被配置为具有布置成使得波导部分将光耦合到检测器中并将光传输到光限制部分中的第一波导部分（18）和第二光限制部分（20,21），以激发耳语画廊模式在光限制部分周围的传播。光吸收层可以是光限制部分的一部分，或者光可以耦合到光限制部分中，或者可替换地，光可以通过渐逝耦合从光限制部分耦合到光吸收层中。在光吸收层内的耳语画廊模式的激发显着增加了光吸收层的有效吸收系数。

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