GB1136032A - Laser communication system - Google Patents

Laser communication system

Info

Publication number
GB1136032A
GB1136032A GB2968966A GB2968966A GB1136032A GB 1136032 A GB1136032 A GB 1136032A GB 2968966 A GB2968966 A GB 2968966A GB 2968966 A GB2968966 A GB 2968966A GB 1136032 A GB1136032 A GB 1136032A
Authority
GB
United Kingdom
Prior art keywords
high power
communication
lasers
modulation
communication system
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
GB2968966A
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
Publication of GB1136032A publication Critical patent/GB1136032A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/11—Arrangements specific to free-space transmission, i.e. transmission through air or vacuum
    • H04B10/112—Line-of-sight transmission over an extended range
    • H04B10/1123—Bidirectional transmission
    • H04B10/1125—Bidirectional transmission using a single common optical path
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
    • H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
    • H01S3/0007—Applications not otherwise provided for

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Optics & Photonics (AREA)
  • Optical Radar Systems And Details Thereof (AREA)
  • Optical Communication System (AREA)

Abstract

1,136,032. Lasers. INTERNATIONAL STANDARD ELECTRIC CORP. 1 July, 1966 [6 July, 1965], No. 29689/66. Heading H1C. [Also in Division G1] In a laser communication system an auxiliary high power laser beam is provided to vaporize atmospheric moisture along the communication beam path. The diameter of the communication beam is made greater than the high power beam. The wavelengths of the communication and high power beams are chosen for minimum and maximum absorption by moisture respectively. The high power beam may be switched on automatically by means which detects when the interference with the communication beam is greater than a predetermined amount. In a two-way communication system an auxiliary high power laser is provided at each station, and an automatic aiming control system may be provided. The lasers used may be (1) solid including ruby; rareearth, trivalent uranium, or (2) gaseous, including He-Ne, noble gas and caesium vapour, or (3) semi-conductor including GaAs diodes, or (4) fibre cavity lasers or liquid and organic lasers. For the communication beam, the modulation may be external using the Pockel, Kerr or Faraday effect, conductivity modulation and ultrasonic pressure effects. Alternatively, internal modulation such as hair trigger, Zeeman or Stark modulation or geometry variation may be used.
GB2968966A 1965-07-06 1966-07-01 Laser communication system Expired GB1136032A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US46949565A 1965-07-06 1965-07-06

Publications (1)

Publication Number Publication Date
GB1136032A true GB1136032A (en) 1968-12-11

Family

ID=23864009

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2968966A Expired GB1136032A (en) 1965-07-06 1966-07-01 Laser communication system

Country Status (4)

Country Link
BE (1) BE683694A (en)
DE (1) DE1268528B (en)
GB (1) GB1136032A (en)
NL (1) NL6609421A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003034620A1 (en) * 2001-10-17 2003-04-24 Hrl Laboratories, Llc Method and apparatus for conditioning a transmission path for free-space optical wireless data communications
US7627249B1 (en) 2005-11-09 2009-12-01 Hrl Laboratories, Llc Method and apparatus for conditioning a transmission path for free-space optical wireless data communications
EP2930863A1 (en) * 2007-05-08 2015-10-14 The Boeing Company Method and apparatus for clearing an optical channel
WO2019038585A1 (en) * 2017-08-21 2019-02-28 Université De Genève Method and apparatus for transmitting optical information through fog or clouds
EP3490167A4 (en) * 2016-11-09 2019-09-18 Mitsubishi Heavy Industries, Ltd. Laser communication system and laser communication method

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19715636A1 (en) * 1997-04-15 1998-10-22 Renfer Robert O Wireless optical transmission device

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003034620A1 (en) * 2001-10-17 2003-04-24 Hrl Laboratories, Llc Method and apparatus for conditioning a transmission path for free-space optical wireless data communications
US7627249B1 (en) 2005-11-09 2009-12-01 Hrl Laboratories, Llc Method and apparatus for conditioning a transmission path for free-space optical wireless data communications
EP2930863A1 (en) * 2007-05-08 2015-10-14 The Boeing Company Method and apparatus for clearing an optical channel
EP3490167A4 (en) * 2016-11-09 2019-09-18 Mitsubishi Heavy Industries, Ltd. Laser communication system and laser communication method
US11115127B2 (en) 2016-11-09 2021-09-07 Mitsubishi Heavy Industries, Ltd. Laser communication system and laser communication method
WO2019038585A1 (en) * 2017-08-21 2019-02-28 Université De Genève Method and apparatus for transmitting optical information through fog or clouds

Also Published As

Publication number Publication date
NL6609421A (en) 1967-01-09
DE1268528B (en) 1968-05-16
BE683694A (en) 1967-01-06

Similar Documents

Publication Publication Date Title
GB1454188A (en)
GB1374870A (en) Optical pulse modulators
GB1358023A (en) Lasers
GB1136032A (en) Laser communication system
GB1505320A (en) Iodine gas laser device
Herziger et al. Ionenlaser hoher Leistung
GB1242559A (en) Improvements in or relating to lasers
GB1517537A (en) Lasers and photo-detectors
GB1102797A (en) Light intensity amplifier utilising fluids
JPS5366192A (en) Oscillation wavelength stabilization method of semiconductor laser
GB1238982A (en)
FR2337449A1 (en) Optical integrated circuit with waveguide - has mesa thin layer oscillator on waveguide coupled via direction coupler
GB1267012A (en)
GB1140233A (en) Improvements in or relating to gas lasers
DESHAZER Transient behavior of transverse modes in high power pulsed lasers(emphasizing Q switched and ruby lasers)[Final Report, 1 Mar. 1971- 31 Dec. 1973]
GB1359128A (en) Laser resonator arrangements
GB1150973A (en) Giant Pulse Laser
GB1017076A (en) Improvements in or relating to lasers
Mori et al. Recent progress on the optically pumped polarized H-ion source at KEK
Lukianov et al. Steady state characteristics of a GaAs injection laser in the case of a narrowband input signal
Cover et al. Astigmatic effects in linearly polarized, tapered-wiggler, free-electron lasers
Andreev et al. Stabilizer with external control element for CW laser radiation power
PRIVALOV Influence of a transverse magnetic field on the output power of a He-Ne laser(He-Ne laser output dependence on transverse magnetic field, ascribing magneto-optical effects to IR radiation decrease)
GB1116889A (en) Improvements in and relating to optical switches for laser systems
Dubrovskii et al. Theory of Compton lasers(scattered wave amplification for X ray lasers)