GB1071911A - Apparatus for energising an output matrix by a beam of collimated plane-polarized electromagnetic wave energy - Google Patents

Apparatus for energising an output matrix by a beam of collimated plane-polarized electromagnetic wave energy

Info

Publication number
GB1071911A
GB1071911A GB4394863A GB4394863A GB1071911A GB 1071911 A GB1071911 A GB 1071911A GB 4394863 A GB4394863 A GB 4394863A GB 4394863 A GB4394863 A GB 4394863A GB 1071911 A GB1071911 A GB 1071911A
Authority
GB
United Kingdom
Prior art keywords
plane
crystals
rotated
energising
electromagnetic wave
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB4394863A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
AT&T Corp
Original Assignee
Western Electric Co Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Western Electric Co Inc filed Critical Western Electric Co Inc
Publication of GB1071911A publication Critical patent/GB1071911A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/29—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the position or the direction of light beams, i.e. deflection
    • G02F1/31—Digital deflection, i.e. optical switching
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Electromagnetism (AREA)
  • Power Engineering (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • Optics & Photonics (AREA)
  • Optical Communication System (AREA)
  • Optical Modulation, Optical Deflection, Nonlinear Optics, Optical Demodulation, Optical Logic Elements (AREA)
  • Lasers (AREA)

Abstract

1,071,911. Lasers. WESTERN ELECTRIC CO. Inc. Nov. 7, 1963 [Nov. 26, 1962], No. 43948/63. Heading H1C. [Also in Divisions G4 and H4] A plane-polarized light beam from an optical maser 1 is rotated through 90 degrees by a Faraday rotator or between half-wave plates 2, 7 . . . according to the presence or absence of a digital input 31, 32 . . . and the rotated beam is displaced by a discrete step according to the plane of polarization with respect to a birefringent crystal 6, 11 ... Crystals 11, 6 have optic axes in plane YZ and crystals 21, 16 have optic axes in plane XZ, the widths of each set of crystals increasing geometrically towards the maser 1 to provide a 1: 1 correspondence between the input binary signals and the output position of the light beam on matrix 22. The beam is rotated using a Faraday rotator or half-wave plates in which a voltage is applied to grids 4, 5 disposed on both sides of a potassium dihydrogen phosphate crystal with normal optic axis on the Z axis and induced optic axis in the XY plane. The deflected beam may be used to sense or to perforate record cards, or for television display &c.
GB4394863A 1962-11-26 1963-11-07 Apparatus for energising an output matrix by a beam of collimated plane-polarized electromagnetic wave energy Expired GB1071911A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US23994862A 1962-11-26 1962-11-26

Publications (1)

Publication Number Publication Date
GB1071911A true GB1071911A (en) 1967-06-14

Family

ID=22904448

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4394863A Expired GB1071911A (en) 1962-11-26 1963-11-07 Apparatus for energising an output matrix by a beam of collimated plane-polarized electromagnetic wave energy

Country Status (3)

Country Link
DE (2) DE1285531B (en)
GB (1) GB1071911A (en)
SE (1) SE321950B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2209843A (en) * 1987-09-11 1989-05-24 British Telecomm An optical space switch

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1064556B (en) * 1955-12-08 1959-09-03 Deutsche Bundespost Use of a transistor with partially falling characteristics for switching with short jump times
US3039005A (en) * 1960-04-08 1962-06-12 Ibm Electro-optical device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2209843A (en) * 1987-09-11 1989-05-24 British Telecomm An optical space switch
GB2209843B (en) * 1987-09-11 1991-09-11 British Telecomm An optical space switch

Also Published As

Publication number Publication date
DE1285531B (en) 1968-12-19
DE1447283B2 (en) 1970-11-05
DE1447283A1 (en) 1968-11-21
SE321950B (en) 1970-03-23

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