GB1532860A - Holographic tele-communication switching system - Google Patents

Holographic tele-communication switching system

Info

Publication number
GB1532860A
GB1532860A GB1567276A GB1567276A GB1532860A GB 1532860 A GB1532860 A GB 1532860A GB 1567276 A GB1567276 A GB 1567276A GB 1567276 A GB1567276 A GB 1567276A GB 1532860 A GB1532860 A GB 1532860A
Authority
GB
United Kingdom
Prior art keywords
line
signals
optical
lines
diodes
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
GB1567276A
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.)
International Standard Electric Corp
Original Assignee
International Standard Electric Corp
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 International Standard Electric Corp filed Critical International Standard Electric Corp
Priority to GB1567276A priority Critical patent/GB1532860A/en
Publication of GB1532860A publication Critical patent/GB1532860A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H04Q3/42—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker
    • H04Q3/52—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker using static devices in switching stages, e.g. electronic switching arrangements
    • H04Q3/526—Optical switching systems

Abstract

1532860 Holographic switching systems INTERNATIONAL STANDARD ELECTRIC CORP 15 April 1976 15672/76 Heading G1A [Also in Divisions G2 and H4] In a holographic switching system electrical signals on incoming lines are converted to optical signals which are phase modulated by dialling signals on one of the incoming lines to select and reconstruct an image on a holographic plate corresponding to a selected one of a plurality of outgoing lines, the optical signals corresponding to said one incoming line being converted to electrical signals for transmission on said one outgoing line. In the embodiment, Fig. 1, each incoming line 6 comprises a call line 16 and a dial line 17; each call line 16 is connected to a respective diode 3 of a matrix 5 for converting electrical signals to light. Optical fibres 4 couple the diodes to an optic matrix 1. The electrical signal on each line 16 intensity modulates the light beam of the respective diode 3; all diodes 3, through matrix 1 and a linear polarizer 9 illuminate an electro-optical coupling device 7 which comprises six subarrays 7a of optical tubes 8 filled with nitrobenzene. Each tube 8 has an electrode (11) connected through a connector 17 to one of the dial lines 17 for controlling the optical transmission properties i.e. the angle of polarization of the tube depending on the electrical signal on the electrode. The dial information on each line 17 is maintained for the duration of each telephone conversation, and each subarray 7a responds to only one dialled digit signal. Thus coupler 7 applies to the light beams emitted by diodes 3 a spatial phase modulation pattern, corresponding to the signals on dial lines 17, which reproduces a unique hologram 19 on a plate 18 corresponding to an outgoing line 20. Optical signals, through the reproduced hologram 19 are received by a diode 3a through an optic matrix 1a and converted to electrical signals for transmission on the selected outgoing line. The signals on diodes 3, 3a may be PCM.
GB1567276A 1976-04-15 1976-04-15 Holographic tele-communication switching system Expired GB1532860A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1567276A GB1532860A (en) 1976-04-15 1976-04-15 Holographic tele-communication switching system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1567276A GB1532860A (en) 1976-04-15 1976-04-15 Holographic tele-communication switching system

Publications (1)

Publication Number Publication Date
GB1532860A true GB1532860A (en) 1978-11-22

Family

ID=10063350

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1567276A Expired GB1532860A (en) 1976-04-15 1976-04-15 Holographic tele-communication switching system

Country Status (1)

Country Link
GB (1) GB1532860A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2139034A (en) * 1980-02-04 1984-10-31 Herzl Laor Communications exchange
US4512036A (en) * 1980-02-04 1985-04-16 Herzl Laor Piezoelectric apparatus for positioning optical fibers
GB2185589A (en) * 1986-01-16 1987-07-22 Stc Plc Optical switching arrangement
GB2228386A (en) * 1989-02-10 1990-08-22 British Aerospace Optical interconnection systems
CN111948599A (en) * 2020-08-14 2020-11-17 电子科技大学 High-resolution positioning method for coherent signals under influence of angle-dependent mutual coupling

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2139034A (en) * 1980-02-04 1984-10-31 Herzl Laor Communications exchange
US4512036A (en) * 1980-02-04 1985-04-16 Herzl Laor Piezoelectric apparatus for positioning optical fibers
US4543663A (en) * 1980-02-04 1985-09-24 Herzl Laor Piezoelectric apparatus for positioning optical fibers
US4580292A (en) * 1980-02-04 1986-04-01 Herzl Laor Communications exchange
US4651343A (en) * 1980-02-04 1987-03-17 Herzl Laor Piezoelectric apparatus for positioning optical fibers
GB2185589A (en) * 1986-01-16 1987-07-22 Stc Plc Optical switching arrangement
GB2185589B (en) * 1986-01-16 1989-11-01 Stc Plc Optical switching arrangement
GB2228386A (en) * 1989-02-10 1990-08-22 British Aerospace Optical interconnection systems
GB2228386B (en) * 1989-02-10 1993-09-29 British Aerospace Optical interconnection system
CN111948599A (en) * 2020-08-14 2020-11-17 电子科技大学 High-resolution positioning method for coherent signals under influence of angle-dependent mutual coupling
CN111948599B (en) * 2020-08-14 2022-08-19 电子科技大学 High-resolution positioning method for coherent signals under influence of angle-dependent mutual coupling

Similar Documents

Publication Publication Date Title
ES445752A1 (en) Holographic telephone switching system
NO903260D0 (en) FIBER OPTIC TELECOMMUNICATION CABLE INCLUDING AMPLIFIER AMPLIFIERS FOR THE TRANSMITTED SIGNS, AND AMPLIFIERS FOR SUCH A CABLE.
JPS63502946A (en) optical communication system
GB1532924A (en) Secure optical multiplex communication system
DE59208529D1 (en) Optical communication system for the subscriber access area with optical amplifiers
CA1136742A (en) Space division switching and control system for switching information modulating optical frequencies
GB1532860A (en) Holographic tele-communication switching system
DE69118954D1 (en) Terminal setup for asynchronous network
ES2022163B3 (en) COHERENT PHOTONIC TELECOMMUNICATIONS DEVICE.
US4798429A (en) Optoelectric connection device
ATE135512T1 (en) TELECOMMUNICATIONS SYSTEM FOR THE PROTECTED TRANSMISSION OF DIGITAL SIGNALS USING A PASSIVE OPTICAL BUS NETWORK
GB1379648A (en) Switching apparatus
BR9407440A (en) System for detecting the identifier of a first component of a sender and detector telecommunications system
DE2708606A1 (en) Communications system with optical fibres - uses optical fibres both for communications and for switching signals and power transmission
ES2127781T3 (en) PROVISION AND PROCEDURE FOR THE DIGITAL TRANSMISSION OF INFORMATION BY CABLE.
JP2770613B2 (en) Optical signaling transmission method
JPS5636243A (en) Photosignal system
DE69020340D1 (en) OPTICAL TRANSMISSION SYSTEM.
JPS55159402A (en) Full mirror type channel-connecting photo switch having photo detector
IT1063695B (en) Holographic switching system for telephone communication - includes LED matrix coupled to incoming speech lines
CA2145913A1 (en) Apparatus for Converting Optical Bipolar Signals to Optical Unipolar Signals
JPS5812450A (en) Package to package optical transmission system
FR2688965B1 (en) OPTICAL TELECOMMUNICATION PROCESS.
Da Via et al. Large scale application of multi-quantum-well reflective modulators for analogue lightwave links
CN1007033B (en) Wide-band sythetical switchbord for optical-fibre communication-network

Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee