公开(公告)号：WO1983003311A1

公开(公告)日：1983-09-29

申请号：PCT/US1983000341

申请日：1983-03-15

Applicant: BURROUGHS CORPORATION

Inventor： BURROUGHS CORPORATION ,  ELY, Richard, I. ,  SUBBARAO, Wunnava, V.

IPC: G02B05/14

CPC classification number: G02B6/3536 ,  G02B6/2852 ,  G02B6/3546 ,  G02B6/3574

Abstract: Un commutateur à membrane optique à plans multiples pouvant être utilisé par exemple dans une matrice de clavier est formé par deux éléments plastiques planaires et transparents (10, 12) disposés parallèlement l'un à l'autre et séparés, des canaux ou des conducteurs de lumière individuels (14, 16) étant formés sur chacun d'eux. Les canaux du plan inférieur sont disposés à angle droit par rapport aux canaux du plan supérieur. L'ensemble supérieur de conducteurs de lumière comprend des branchements intégraux et doucement recourbés (18) disposés à l'intersection des conducteurs supérieurs et inférieurs afin de transmettre la lumière passant dans les canaux conducteurs du plan inférieur aux canaux conducteurs supérieurs lorsque les intersections des deux canaux sont comprimées ensemble par la tête de la touche, en commutant effectivement la lumière des canaux inférieurs aux canaux supérieurs.

公开(公告)号：WO1983000744A1

公开(公告)日：1983-03-03

申请号：PCT/US1982001162

申请日：1982-08-26

Applicant: TRW INC.

Inventor： TRW INC. ,  ASAWA, Charles, Katsumi ,  AUSTIN, Joseph, Winslow ,  BARNOSKI, Michael, Kajeton ,  PERSONICK, Stewart, David ,  YAO, Shi-Kay ,  JACKSON, Allan, Ricardo

IPC: G02B05/14

CPC classification number: G01L1/245

Abstract: A system for remote measurement of structural forces includes a plurality of microbend transducers (14) mounted along the length of the structure (12) for microbending an optical fiber (16) in response to structural forces, such as stress acting upon an oil or gas pipeline or the like. An optical time domain reflectometer (OTDR) (18) has a light source (46) for launching a pulsed optical signal passage through the fiber and a photodetector (56) for sensing as a function of time the intensity of backscattered light reflected back through the fiber, wherein this sensed time function is correlated directly with discrete longitudinal positions along the length of the fiber and the structure. When one or more of the microbend transducers is activated to induce a microbend in the fiber response to localized forces acting upon the structure, a portion of the backscattered light is lost at the microbend. This attenuation in backscattered light intensity is sensed quantitatively and positionally identified by the photodetector. Specific preferred constructions for microbend transducers and system arrangements particularly adapted for detecting structurally strain in an oil or gas pipeline are disclosed.

Abstract translation: 用于远程测量结构力的系统包括沿着结构（12）的长度安装的多个微弯曲换能器（14），用于响应于结构力（例如作用在油或气体上的应力）而使光纤（16）微弯曲 管线等。 光学时域反射计（OTDR）（18）具有用于发射通过光纤的脉冲光信号通道的光源（46）和用于根据时间的方式感测作为时间的函数的反射散射光的强度 光纤，其中该感测时间函数直接与沿着光纤和结构的长度的离散纵向位置相关联。 当一个或多个微弯变换器被激活以在纤维响应中产生微弯曲以对作用在结构上的局部力时，反向散射光的一部分在微弯处丧失。 反射散射光强度中的衰减由光电检测器定量和位置地识别。 公开了用于微弯传感器和特别适用于检测油或气管线中的结构应变的系统布置的特定优选结构。

公开(公告)号：WO1981000916A1

公开(公告)日：1981-04-02

申请号：PCT/US1980001140

申请日：1980-09-05

Applicant: WESTERN ELECTRIC CO INC

Inventor： WESTERN ELECTRIC CO INC ,  ALFERNESS R

IPC: G02B05/14

CPC classification number: G02F1/3132 ,  G02F2201/125 ,  G02F2203/06

Abstract: A reverse (Alpha) (Beta) optical switch employs spatial tapering of the distance (D (2)) between a pair of optical waveguides (10, 11) for efficient straight-through transmission. Appropriate choice of effective coupling strengths for the TE and TM polarization modes achieves efficient crossover transmission. A split electrode configuration (13, 14, 15) permits the application of uniform electric fields (V1=V2) or reversed electric fields (V1=-V2) across the waveguides.

公开(公告)号：WO1980001957A1

公开(公告)日：1980-09-18

申请号：PCT/US1980000179

申请日：1980-02-25

Applicant: WESTERN ELECTRIC CO INC

Inventor： WESTERN ELECTRIC CO INC ,  METTLER S ,  KUMMER R ,  MILLER C

IPC: G02B05/14

CPC classification number: G02B6/3502 ,  G02B6/3556

Abstract: A device (70) for switching optical signal paths of the type utilizing a plurality of light-transmitting optical fibers (40, 50) comprises a flexible elongated sleeve (20) having a longitudinally continuous interior cross section (24) with a plurality of comers (30) forming fiber-aligning grooves. The sleeve loosely receives a first fiber (40) from a first sleeve end (26) and a plurality of second fibers (50) from a second sleeve end (28). Each second fiber has its coupling end biased against an assigned corner. Also, the ends of all the second fibers are contained in one transverse plane (23).The coupling end (46) of the first fiber is positioned adjacent to the transverse plane and a portion (42) of the first fiber, remote from its end, is fixedly secured to the sleeve. Coupling of the first fiber with any of the second fibers is achieved by flexing the sleeve to move the first fiber end against the corner containing the selected second fiber.

公开(公告)号：WO1979000099A1

公开(公告)日：1979-03-08

申请号：PCT/SE1978000032

申请日：1978-08-15

Applicant: ERICSSON TELEFON AB L M ,  ENDERSZ G ,  GSTADIUS J

Inventor： ERICSSON TELEFON AB L M

IPC: G02B05/14

CPC classification number: G02B6/4239 ,  G02B6/4226

Abstract: An optical fibre (14) is optically coupled to an optically active element (13), for example a light source. In order to achieve optimum coupling, the end portion of the fibre (14) is carefully adjusted in relation to said element (13) in three dimensions. The end of the fibre is provided with a sleeve (15) slidably mounted in a bushing (17). The bushing is provided with a flange (18) which is adjustably pressed against a surface (12) on a mounting base (11) which is perpendicular to the axis of the sleeve (15). The mounting base (11) also carries the optically active element (13) near the end of the fibre (14). After the sleeve (15) and the bushing (17) respectively are adjusted so that maximum coupling is obtained between the fibre and the optical element the sleeve (15), bushing (17) and mounting base (11) are fixed together by introducing a highly fluid, quick-setting glue, preferably a cyanoacrylate, between the sleeve (15) and the bushing (17) and between the bushing (17) and the mounting base (11).