公开(公告)号：WO1991017470A1

公开(公告)日：1991-11-14

申请号：PCT/GB1991000704

申请日：1991-05-02

Applicant: BT&D TECHNOLOGIES LIMITED ,  MORRIS, David

Inventor： BT&D TECHNOLOGIES LIMITED

IPC: G02F01/035

CPC classification number: G02F1/0356 ,  G02F1/2255 ,  G02F1/3134 ,  G02F2201/127

Abstract: An optical modulator (30) has a hot electrode (12) and a single ground plane electrode (64) which is close to the hot electrode on the upper surface (6). This form of travelling wave electrode (12, 64) confines the substrate modes to rectangular waveguide modes so providing a higher frequency response to the modulator (30) by moving the first substrate modes to a higher frequency.

Abstract translation: 光调制器（30）具有靠近上表面（6）上的热电极的热电极（12）和单个接地平面电极（64）。 这种形式的行波电极（12,64）将衬底模式限制为矩形波导模式，从而通过将第一衬底模式移动到较高频率来向调制器（30）提供更高的频率响应。

公开(公告)号：WO1991006022A1

公开(公告)日：1991-05-02

申请号：PCT/GB1990001583

申请日：1990-10-12

Applicant: BT&D TECHNOLOGIES LIMITED ,  MUSK, Robert, William

Inventor： BT&D TECHNOLOGIES LIMITED

IPC: G02B06/36

CPC classification number: G02B7/023 ,  F16M11/043 ,  F16M11/12 ,  G02B6/3656 ,  G02B6/3684 ,  G02B6/3805 ,  G02B6/4226

Abstract: A lens mount (1) for a miniature optical lens (6) comprises a frame (2, 3) capable of plastic deformation in and parallel to its major plane (U-D & L-R). Movement out of the plane (B-F) may also be provided for. This arrangement allows minor re-adjustments to optical lens alignment to be performed after assembly.

Abstract translation: 用于微型光学透镜（6）的透镜支架（1）包括能够塑性变形并平行于其主平面（U-D和L-R）的框架（2,3）。 也可以提供飞机外的移动（B-F）。 这种布置允许在组装之后执行对光学透镜对准的轻微的重新调整。

公开(公告)号：WO1989011676A1

公开(公告)日：1989-11-30

申请号：PCT/GB1989000565

申请日：1989-05-23

Applicant: BT&D TECHNOLOGIES LIMITED ,  SHAW, Robert, Norman

Inventor： BT&D TECHNOLOGIES LIMITED

IPC: G02F01/29

CPC classification number: G02F1/2255 ,  G02F1/3134 ,  G02F2203/21

Abstract: In electro-optic waveguide devices such as directional couplers and Mach-Zehnder interferometers having travelling-wave electrodes which overlie the waveguides, temperature sensitivity is reduced by arranging the ground plane electrode to overlie only part of the width of its associated waveguide portion. The invention has particular application to z-cut lithium niobate.

公开(公告)号：WO1988010018A1

公开(公告)日：1988-12-15

申请号：PCT/GB1988000429

申请日：1988-06-01

Applicant: BT&D TECHNOLOGIES LIMITED

Inventor： BT&D TECHNOLOGIES LIMITED ,  MUSK, Robert, William

IPC: H01S03/02

CPC classification number: G02B6/4295 ,  G02B6/4204 ,  H01S5/0071 ,  H01S5/02252 ,  H01S5/02284 ,  H01S5/0683

Abstract: An optical transmitter assembly (1) comprises an optical source (10) and an optical detector (20) arranged to receive light output from the source (10) indirectly via a deformable reflector (30). This allows tuning of the detector output power with respect to the optical output of the source or the optical power coupled into the transmission fibre (50). The source (10), the detector (20) and the reflector (30) are mounted on a common support structure (40).

公开(公告)号：WO1994019718A1

公开(公告)日：1994-09-01

申请号：PCT/GB1994000313

申请日：1994-02-16

Applicant: BT&D TECHNOLOGIES LIMITED ,  MEADOWCROFT, Simon, George, Preston

Inventor： BT&D TECHNOLOGIES LIMITED

IPC: G02B06/42

CPC classification number: G02B6/4202 ,  G02B6/4204 ,  G02B6/4225 ,  G02B6/4292

Abstract: An optical connector includes a sleeve (14) extending from a flange. The sleeve has a wide zone adjacent to the flange (10) and a deformable zone, of smaller cross-sectional area, further from the flange. The deformable zone is conveniently constituted as a plurality of spring segments (16a, 16b) separated by a plurality of longitudinally extending slits (17a, 17b). The optical system is attached to the flange on the opposite side to the collar (15). During use, the ferrule of a terminated optical fiber is located in the sleeve for communication with the optical system. The connector is based on the theory that the sleeve repeatable locates a ferrule inserted therein and the optical member is adjusted to this repeatable position using an active technique which monitors the performance of a test optical system until optimal performance indicates that the optical system is located in the best position. The connector with a fibre ferrule (60) is located in the sleeve. The ferrule contains a fibre (61) and the ferrule (60) is part of the termination of this fibre which extends to whatever location is appropriate. The termination also includes a cap (62) which is spring loaded to the ferrule (60) by spring (63). The cap (62) includes a retaining lip (64) which is located in a retaining groove (43) of the tubular protective member (41). Because of this engagement of the cap (62) the spring (63) is compressed which urges the ferrule (60) into contact with the flange (10). This locates the flange in the longitudinal direction. Because the flange has a wider diameter than the deformable zone of the component (40) the spring members (16a) and (16b) are forced apart. Because they are springy they grip the ferrule and hold it in a reproducible location. Thus the insertion of the ferrule (60) into the component (40) produces a reproducible location of the tip of the fibre (61). The component is machined from a resilient material such as phosphor-bronze.

Abstract translation: 光学连接器包括从凸缘延伸的套筒（14）。 所述套筒具有与所述凸缘（10）相邻的较宽的区域和更远离所述凸缘的较小横截面面积的可变形区域。 可变形区域方便地构成为由多个纵向延伸的狭缝（17a，17b）分开的多个弹簧段（16a，16b）。 光学系统连接到与套环（15）相对的一侧上的凸缘。 在使用期间，端接的光纤的套圈位于套筒中以与光学系统通信。 该连接器基于这样的理论：套筒可重复定位插入其中的套圈，并且使用主动技术将光学构件调整到该可重复位置，该技术监视测试光学系统的性能，直到最佳性能指示光学系统位于 最好的位置。 具有光纤套圈（60）的连接器位于套筒中。 套管包含纤维（61），并且套圈（60）是延伸到适当的任何位置的该纤维的终端的一部分。 端接件还包括通过弹簧（63）弹簧加载到套圈（60）的盖（62）。 盖（62）包括位于管状保护构件（41）的保持槽（43）中的保持唇（64）。 由于盖（62）的接合，弹簧（63）被压缩，这促使套圈（60）与凸缘（10）接触。 这将沿法兰方向定位。 由于凸缘具有比部件（40）的可变形区域更宽的直径，所以弹簧构件（16a）和（16b）被强制分开。 因为它们是弹性的，它们握住套圈并将其保持在可重现的位置。 因此，套圈（60）插入组件（40）中产生纤维（61）的尖端的可再现位置。 该组件由诸如磷青铜的弹性材料加工而成。

公开(公告)号：WO1989009491A1

公开(公告)日：1989-10-05

申请号：PCT/GB1989000332

申请日：1989-03-31

Applicant: BT&D TECHNOLOGIES LIMITED ,  REGNAULT, John, Christopher

Inventor： BT&D TECHNOLOGIES LIMITED

IPC: H01L21/60

CPC classification number: H01L24/83 ,  H01L21/4882 ,  H01L24/29 ,  H01L2224/29111 ,  H01L2224/29144 ,  H01L2224/8319 ,  H01L2224/83801 ,  H01L2924/01005 ,  H01L2924/01006 ,  H01L2924/01029 ,  H01L2924/01032 ,  H01L2924/01042 ,  H01L2924/0105 ,  H01L2924/01078 ,  H01L2924/01079 ,  H01L2924/0132 ,  H01L2924/01322 ,  H01L2924/014 ,  H01L2924/12033 ,  H01L2924/12042 ,  H01L2924/157 ,  H01S5/02272 ,  H01L2924/00012 ,  H01L2924/00

Abstract: A technique for assembling semiconductor devices in which semiconductor elements, especially lasers or LEDS, are mounted on a first packaging element such as a heat spreader that is mounted on a second packaging element such as a heat sink. Handling of solder preforms is avoided by coating at least one of each of the pairs of surfaces to be brought into contact with a layer of solder and heating the assembly to melt both solder layers in a single operation. In a preferred embodiment a heat spreader is coated in solder on both sides and interposed between a semiconductor element and a heat sink and the assembly is heated. Molybdenum may be used as a layer to aid wetting and adhesion and gold/tin solder may be used. Slightly different solidification temperatures and compositions for the layers may result from different take up of metallisation layers from the components into the solder.

公开(公告)号：WO1994015233A1

公开(公告)日：1994-07-07

申请号：PCT/GB1993002648

申请日：1993-12-23

Applicant: BT&D TECHNOLOGIES LIMITED ,  MUSK, Robert, William

Inventor： BT&D TECHNOLOGIES LIMITED

IPC: G02B06/42

CPC classification number: G02B6/4202 ,  G02B6/3822 ,  G02B6/3861 ,  G02B6/4207

Abstract: An optical fibre termination which reduces the effect of reflections from the transfer face (12). The transfer face is skewed to the axis of the termination so that reflections are not propagated along the external path. The transfer face is also skewed to the core direction so that refraction makes the external path parallel to, and preferably co-incident with, the axis. To assemble a termination, the fibre is prepared by removing the end portion of its plastics sheath to leave about 1 cm of bare glass filament exposed. If the other end of the fibre is not available (because the fibre is too long) the housing is placed on the fibre as a preliminary even though is not used at the start of that assembly. The fibre (10) is clamped with its bare end (40) horizontal and the nose-piece (30) (which is too light to bend the fibre) is placed on the bare end (40). Because the centre of mass is towards the rear the nose-piece tilts to its angle of repose. Thus the critical skew defined above is established and, at this time a thermosetting or other filler material is introduced into the nose-piece so that the configuration is finalised even when the fibre is removed from its horizontal alignment. The length and diameter of the control tube (31) determine the angle which a fibre, located diagonally in the control tube (31), makes with the axis of the control tube (31).

Abstract translation: 一种降低来自转印面（12）的反射影响的光纤终端。 转印面倾斜到端接轴，使得反射不沿着外部路径传播。 转印面也与芯方向倾斜，使得折射使得外部路径平行于轴，优选地与轴共同入射。 为了组装终端，通过去除其塑料护套的端部来制备纤维，留下约1cm的露出的裸露的玻璃丝。 如果光纤的另一端不可用（因为光纤太长），即使在该组件开始时不使用外壳，也将其作为初步的放置在光纤上。 光纤（10）以其裸露端（40）水平夹持，并且鼻梁（30）（其太浅而不能弯曲光纤）被放置在裸端（40）上。 因为质量中心朝向后方，所以鼻子倾斜到其休止角。 因此，建立了上述定义的临界偏斜，并且此时将热固性或其它填充材料引入鼻片中，使得即使当纤维从其水平对准中移除时，配置也被定型。 控制管（31）的长度和直径决定了控制管（31）中对角线对准与控制管（31）的轴线成的角度。

公开(公告)号：WO1994015232A1

公开(公告)日：1994-07-07

申请号：PCT/GB1993002655

申请日：1993-12-23

Applicant: BT&D TECHNOLOGIES LIMITED ,  MUSK, Robert, William

Inventor： BT&D TECHNOLOGIES LIMITED

IPC: G02B06/38

CPC classification number: G02B6/3831 ,  G02B6/3812 ,  G02B6/3821 ,  G02B6/3822 ,  G02B6/3851 ,  G02B6/3869

Abstract: A PC connector is provided which prevents a plug (2) from being rotated relative to a receptacle (6) and can maintain an optimal positional relation between the forward ends of two fibre optic ferrules. The optical connector includes, in addition to the plug and the receptacle, a coil spring (8) anchored between the plug and the receptacle. The plug is latched to the receptacle in a predetermined rotation position. The spring (8) has one end portion (8a) extending along an axial direction of the plug and the other end portion (8b) extending in a direction perpendicular to that one end. Due to the engagement of the one end portion of the spring with an engaging groove (12) and engagement of that other end portion of the spring with a minor cutout (18c) of the receptacle, an urging rotation force of the spring acts only in one direction upon the plug so that the plug is maintained in a predetermined rotation position relative to the receptacle.

Abstract translation: 提供一种PC连接器，其防止插头（2）相对于插座（6）旋转，并且可以保持两个光纤套圈的前端之间的最佳位置关系。 除了插头和插座之外，光学连接器还包括锚固在插头和插座之间的螺旋弹簧（8）。 插头在预定的旋转位置被锁定到插座。 弹簧（8）具有沿着插塞的轴向延伸的一个端部（8a），而另一端部（8b）沿与该一端垂直的方向延伸。 由于弹簧的一个端部与接合槽（12）的接合以及弹簧的该另一个端部与容器的小切口（18c）的接合，所以弹簧的推动旋转力仅作用在 插头上的一个方向使得插头相对于插座保持在预定的旋转位置。

公开(公告)号：WO1991014958A1

公开(公告)日：1991-10-03

申请号：PCT/GB1991000479

申请日：1991-03-28

Applicant: BT&D TECHNOLOGIES LIMITED ,  PAYNE, Roger, Alyn

Inventor： BT&D TECHNOLOGIES LIMITED

IPC: G02B06/42

CPC classification number: G02B6/3812 ,  G02B6/4248

Abstract: An optical fibre feedthrough (2) in which a polarization maintaining (PM) fibre (6) is sealed within a metallic sleeve (14) by a glass seal (20). The seal (6) applies asymmetric stresses to the fibre (6) which is orientated so that they reinforce its PM properties. This arrangement reduces the manufacturing tolerances needed to avoid destroying the PM properties of the fibre associated with symmetric stress seals. It has application to packages for opto-electronic components. A double optical fibre feedthrough is also disclosed.

Abstract translation: 一种光纤馈通（2），其中通过玻璃密封（20）将偏振维持（PM）光纤（6）密封在金属套筒（14）内。 密封件（6）对纤维（6）施加不对称应力，其被定向以增强其PM性能。 这种布置减少了避免破坏与对称应力密封相关联的纤维的PM性质所需的制造公差。 它适用于光电组件的封装。 还公开了双光纤馈通。

公开(公告)号：WO1990003594A1

公开(公告)日：1990-04-05

申请号：PCT/GB1989001099

申请日：1989-09-20

Applicant: BT&D TECHNOLOGIES LIMITED ,  SHAW, Robert, Norman

Inventor： BT&D TECHNOLOGIES LIMITED

IPC: G02F01/21

CPC classification number: G02F1/2255 ,  G02F1/3134

Abstract: An electro-optic device, such as a Mach-Zehnder interferometer or a directional coupler, has a power dissipating electrode structure and a ground plane electrode, and is switchable between first and second distinct states by the application of respective first and second potentials to the power dissipating electrode. Thermally induced instabilities are minimised by biasing the ground plane electrode such that the first and second potentials are of substantially equal magnitude but of opposite sign. The power dissipating electrode may be a travelling-wave electrode connected to a 50 ohm transmission line.