公开(公告)号：EP0003575A3

公开(公告)日：1979-09-05

申请号：EP79100314

申请日：1979-02-02

Applicant: CSELT Centro Studi e Laboratori Telecomunicazioni S.p.A.

Inventor： Di Vita, Pietro

IPC: G02B05/14

CPC classification number: G02B6/29373 ,  G02B6/2817 ,  G02B6/29382 ,  G02B6/4246

Abstract: The optical mixing-demixing is effected, as regards the mixing operation, by suitably sending two light beams having different wavelengths to a first separation surface between transparent materials having suitable behaviours of the refractive index. The obtained multiple beam, with a third beam having a different wavelength is then sent to a second separation surface between transparent materials having different suitable behaviours of the refractive index, obtaining an only beam; the operation is repeated till all the beams are mixed. For demixing operation, the beam formed by a plurality of beams, having different wavelengths is suitably sent to a first separation surface between transparent materials having suitable behaviours of the refractive index and an only monochromatic beam is drown out. The resulting beam is then sent to a second separation surface between transparent materials having different suitable behaviours of the refractive index, for drawing out a second monochromatic beam; the operation is repeated until all the beams are demixed.

公开(公告)号：EP0001702A3

公开(公告)日：1979-05-16

申请号：EP78300495

申请日：1978-10-12

Applicant: AMP INCORPORATED (a New Jersey corporation)

Inventor： Harwood, Robert George ,  Bowen, Terry Patrick ,  Schumacher, William Ludlow

IPC: G02B05/14 ,  G02B07/00

CPC classification number: G02B6/3893 ,  G02B6/3835 ,  G02B6/3839 ,  G02B6/3855 ,  G02B6/3858 ,  G02B6/3861

Abstract: An optical fibre core (21,67) stripped of its irregularly dimensioned optical cladding (23) is inserted in a precisely dimensioned passageway (19,28,66) of a housing part (18,27,64) which has a refractive index compatible with the refractive index of the optical cladding (23) ensuring both precise location and retention of the optical properties of the fibre end portion. A portion of the passageway (19,66) between the fibre end portion (21,67) and an end of the housing part (18,27,64) is filled with adhesive (24) having a refractive index compatible with that of the fibre core (21,67).

Abstract translation: 剥离其不规则尺寸的光学包层（23）的光纤芯（21,67）被插入到壳体部分（18,27,64）的精确尺寸的通道（19,28,66）中，该壳体部分具有折射率兼容 光学包层（23）的折射率确保光纤端部的光学特性的精确定位和保持。 在纤维端部（21,67）和壳体部分（18,27,64）的端部之间的通道（19,66）的一部分填充有具有与 纤维芯（21,67）。

公开(公告)号：EP0129372A3

公开(公告)日：1987-04-15

申请号：EP84303841

申请日：1984-06-06

Applicant: IMPERIAL CHEMICAL INDUSTRIES PLC

Inventor： George, Ryan Timothy

IPC: C03C25/02 ,  G02B05/14

CPC classification number: C03C25/106 ,  C09K19/3838 ,  G02B6/4402 ,  Y10S359/90 ,  Y10T428/2913 ,  Y10T428/2969

Abstract: Optical fibre cables are produced containing an extruded support member ofthermotropic liquid crystalline polymer in which the extrusion conditions are used to control the thermal expansion coefficient of the support member. The support member may be extruded on to the support member. In this case extrusion conditions may be used to induce a compressive strain on the fibre which can counteract the thermal change in length of the fibre when subject to temperature variations so that a cable having an optical path length which is less sensitive to temperature variation can be produced. Support members which provide a loose fitting sleeve over the fibre can be produced by control of extrusion conditionsto have a thermal expansion coefficient of not less than -5×10 -6 /°K.

公开(公告)号：EP0069977A3

公开(公告)日：1985-10-16

申请号：EP82106051

申请日：1982-07-07

Applicant: Mori, Kei

Inventor： Mori, Kei

IPC: G02B05/14 ,  F21S05/00

CPC classification number: G02B6/001 ,  F21S11/00 ,  G02B6/0001 ,  Y10S359/90

Abstract: An optical radiator for diffusingly radiating sunlight emitted from an optical-conductor cable for the purpose of illumination. In order to illuminate a sufficiently wide region surrounding the optical-conductor cable, a cladding layer of the optical-conductor cable located in the region to be illuminated is excised, and the outer surface of the thus exposed of the optical-conductor cable is topically covered by a fine grain adhesive with a refractive index equal to or greater than that of said core.

公开(公告)号：EP0076373A3

公开(公告)日：1985-10-09

申请号：EP82107392

申请日：1982-08-13

Applicant: Siemens Aktiengesellschaft

Inventor： Auracher, Franz, Dr. Ing. ,  Stockmann, Michael, Dipl.-Phys.

IPC: G02F01/11 ,  G02F01/33 ,  G02B05/14

CPC classification number: G01R23/17 ,  G02B6/1245 ,  G02F1/125

Abstract: Bei einem Frequenzanalysator in planarer Wellenleiter technologie läßt sich bisher nur die Bragg-Zelle durch Verwendung fotolithografischer Prozesse kostengünstig fer tigen. Die Herstellung der außerdem nötigen leistungsfähi gen Wellenleiterlinsen für die Fourier-Transformation ist immer noch sehr aufwendig. Es soll aufgezeigt werden, wie auch diese Linsen und damit der gesamte Frequenzanalysa tor kostengünstig hergestellt werden können bzw. kann. Dazu wird ein Design vorgeschlagen, das für den linsenopti schen Teil des Frequenzanalysators ein anderes Substratma terial vorsieht, als für die Bragg-Zelle, und zwar ein Substrat material, in dem die geodätische Wellenleiterlinse durch Pressen mit einem Stempel erzeugbar ist. Dadurch können auch die Herstellungskosten für Anlagen parallel betriebener Frequenzanalysatoren in planarer Wellenleitertechnologie gesenkt werden, indem eine rotationssymmetrische Wellen leiterlinse gemeinsam von mehreren Wellenleitermodulato ren zur Fourier-Transformation der HF-Signale benutzt wird.

公开(公告)号：EP0043449A3

公开(公告)日：1983-10-05

申请号：EP81104330

申请日：1981-06-04

Applicant: Siemens Aktiengesellschaft

Inventor： Keil, Rudolf, Dipl.-Ing. ,  Auracher, Franz, Dr.

IPC: G02F01/29 ,  G02F01/31 ,  G02B05/14

CPC classification number: G02F1/2955

公开(公告)号：EP0033070A3

公开(公告)日：1982-07-28

申请号：EP81100091

申请日：1981-01-08

Applicant: International Business Machines Corporation

Inventor： Johnson, Mark

IPC: G02B05/14 ,  G02F01/01 ,  G02B07/26

CPC classification number: G02F1/065 ,  G02B6/1245 ,  G02B26/02 ,  G02B26/08

Abstract: An elastic two dimensionally guiding waveguide (30, 60) is controllably stretched between two or more different configurations, the different configurations being such that wave energy takes different paths (40,42) through the waveguide at each of the two or more different configurations. The paths are different because wave energy which propagates along and between two parallel boundary surfaces or which follows a surface travels along a geodesic path and the geodesic path can be changed by stretchably deforming the surface shape in a suitable manner. In one embodiment an optically transparent sheet of rubber-like material is stretched into a depression or hole (34, 50) within a substrate (32, 66) using controlled pneumatic forces. Many different active functions may be implemented using this principle, including switching, variable focussing, modulation, scanning and deflection.

公开(公告)号：EP0021199A3

公开(公告)日：1982-02-03

申请号：EP80103167

申请日：1980-06-06

Applicant: KABUSHIKI KAISHA TOSHIBA

Inventor： Ozeki, Takeshi

IPC: G01D05/26 ,  G01R15/07 ,  G02B05/14 ,  G02F07/00

CPC classification number: G01K1/024 ,  G01D5/344 ,  G01L11/025 ,  G01R15/242

Abstract: In an optical sensing system, a phase-comparator (38) compares the phase of an output light beam detected by a photo-detector (36) with an input light beam as to whether those are in-phase or out-of-phase, and senses a magnitude of a physical quantitiy to be measured, which modulates the input light beam. The light produced by the light source (2) is splitted into two light beam components (23, 25) and modulated in its light-intensity by the physical quantity. Both the light beam components (23, 25) are given a time difference τ (= (2m+1)/2f, where m = 1, 2, ... n) therebetween, are mixed again and are supplied to the photo-detector (36).

公开(公告)号：EP0004800A3

公开(公告)日：1979-10-31

申请号：EP79400095

申请日：1979-02-15

Applicant: LIGNES TELEGRAPHIQUES ET TELEPHONIQUES Société anonyme

Inventor： Chiron, Bernard S.A. LIGNES TELEGRAPHIQUES ,  Foure, Jean-Louis S.A. LIGNES TELEGRAPHIQUES ,  de Vecchis, Michel S.A. LIGNES TELEGRAPHIQUES

IPC: G02B05/14 ,  H01L31/02 ,  H04B09/00

CPC classification number: H01L31/16 ,  G02B6/4249 ,  H01L24/45 ,  H01L25/042 ,  H01L2224/45 ,  H01L2224/49171 ,  H01L2224/73265 ,  H01L2924/00014 ,  H01L2924/01015 ,  H01L2924/00 ,  H01L2224/48 ,  H01L2224/43 ,  H01L2224/45015 ,  H01L2924/207 ,  H01L2224/45099

公开(公告)号：EP0121401A3

公开(公告)日：1984-11-28

申请号：EP84302084

申请日：1984-03-28

Applicant: SUMITOMO ELECTRIC INDUSTRIES LIMITED

Inventor： Tada, Kunio ,  Nishiwaki, Yoshikazu c/o OSAKA WORKS ,  Matsuoka, Shunji c/o OSAKA WORKS

IPC: G02F01/015 ,  G02F01/31 ,  G02B05/14

CPC classification number: G02F1/025 ,  G02F1/3133 ,  G02F2001/0151 ,  G02F2201/063 ,  G02F2202/101

Abstract: A light modulation device comprises a substrate (1), a substrate layer (2), an optical waveguide layer (3) and buffer layers (4), in that order, formed of either all n-type or all p-type compound semiconductor crystal. In orderto capture the light in the optical waveguide layer, the composition ratio of the compound semiconductor is so determined that the refractive index is at least approximately 0.1% higher in the optical waveguide layers than in the substrate layer and in the buffer layers. Furthermore, the carrier density is low in the optical waveguide layer and in the buffer layers, so that the applied voltage is effectively applied mainly to the optical waveguide layer. Due to the construction of the light modulation device, strict control of the etching process is not required, the device has a low absorption loss of light, and it can be made as a monolithic optical integrated circuit.