GB2580044B - Improvements in and relating to free-space optical communications - Google Patents

Improvements in and relating to free-space optical communications Download PDF

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Publication number
GB2580044B
GB2580044B GB1820774.6A GB201820774A GB2580044B GB 2580044 B GB2580044 B GB 2580044B GB 201820774 A GB201820774 A GB 201820774A GB 2580044 B GB2580044 B GB 2580044B
Authority
GB
United Kingdom
Prior art keywords
relating
free
optical communications
space optical
space
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.)
Active
Application number
GB1820774.6A
Other versions
GB2580044A (en
GB201820774D0 (en
Inventor
Derek Finch Stephen
Stewart Griffith Michael
James Williams Andrew
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.)
BAE Systems PLC
Original Assignee
BAE Systems PLC
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 BAE Systems PLC filed Critical BAE Systems PLC
Priority to GB1820774.6A priority Critical patent/GB2580044B/en
Publication of GB201820774D0 publication Critical patent/GB201820774D0/en
Priority to AU2019411504A priority patent/AU2019411504A1/en
Priority to US17/415,984 priority patent/US11463168B2/en
Priority to EP19821196.3A priority patent/EP3900224A1/en
Priority to PCT/GB2019/053486 priority patent/WO2020128432A1/en
Publication of GB2580044A publication Critical patent/GB2580044A/en
Application granted granted Critical
Publication of GB2580044B publication Critical patent/GB2580044B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • H04B10/118—Arrangements specific to free-space transmission, i.e. transmission through air or vacuum specially adapted for satellite communication
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J9/00—Measuring optical phase difference; Determining degree of coherence; Measuring optical wavelength
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B26/00—Optical devices or arrangements for the control of light using movable or deformable optical elements
    • G02B26/06—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the phase of light
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B26/00—Optical devices or arrangements for the control of light using movable or deformable optical elements
    • G02B26/08—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the direction of light
    • G02B26/0816—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the direction of light by means of one or more reflecting elements
    • G02B26/0825—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the direction of light by means of one or more reflecting elements the reflecting element being a flexible sheet or membrane, e.g. for varying the focus
    • 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
    • H04B10/60—Receivers
    • H04B10/61—Coherent receivers
    • 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
    • H04B10/60—Receivers
    • H04B10/61—Coherent receivers
    • H04B10/613—Coherent receivers including phase diversity, e.g., having in-phase and quadrature branches, as in QPSK coherent receivers
GB1820774.6A 2018-12-20 2018-12-20 Improvements in and relating to free-space optical communications Active GB2580044B (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
GB1820774.6A GB2580044B (en) 2018-12-20 2018-12-20 Improvements in and relating to free-space optical communications
AU2019411504A AU2019411504A1 (en) 2018-12-20 2019-12-10 Improvements in and relating to free-space optical communications
US17/415,984 US11463168B2 (en) 2018-12-20 2019-12-10 Multi-aperture free-space optical communications receiver
EP19821196.3A EP3900224A1 (en) 2018-12-20 2019-12-10 Improvements in and relating to free-space optical communications
PCT/GB2019/053486 WO2020128432A1 (en) 2018-12-20 2019-12-10 Improvements in and relating to free-space optical communications

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1820774.6A GB2580044B (en) 2018-12-20 2018-12-20 Improvements in and relating to free-space optical communications

Publications (3)

Publication Number Publication Date
GB201820774D0 GB201820774D0 (en) 2019-02-06
GB2580044A GB2580044A (en) 2020-07-15
GB2580044B true GB2580044B (en) 2023-02-15

Family

ID=65364345

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1820774.6A Active GB2580044B (en) 2018-12-20 2018-12-20 Improvements in and relating to free-space optical communications

Country Status (1)

Country Link
GB (1) GB2580044B (en)

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2015125A1 (en) * 2007-07-09 2009-01-14 BAE Systems plc Optically controlled deformable mirror
WO2010058193A2 (en) * 2008-11-19 2010-05-27 Bae Systems Plc Mirror structure
US20160204866A1 (en) * 2015-01-09 2016-07-14 Don M. Boroson Ground terminal design for high rate direct to earth optical communications
WO2017098223A1 (en) * 2015-12-09 2017-06-15 Bae Systems Plc Improvements in and relating to remote sensing
CN107040316A (en) * 2016-12-22 2017-08-11 华中科技大学 A kind of inexpensive spatial coherence photoreceiver of multiple aperture and signal receiving demodulation method
US20170264365A1 (en) * 2014-12-01 2017-09-14 Nec Corporation Free space optical receiver and free space optical receiving method
WO2018139357A1 (en) * 2017-01-27 2018-08-02 国立研究開発法人情報通信研究機構 Spatial optical communication device and method
WO2018180912A1 (en) * 2017-03-28 2018-10-04 日本電気株式会社 Signal processing device and signal processing method
WO2018198891A1 (en) * 2017-04-25 2018-11-01 日本電気株式会社 Signal synthesizing device and signal synthesizing method

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2015125A1 (en) * 2007-07-09 2009-01-14 BAE Systems plc Optically controlled deformable mirror
WO2010058193A2 (en) * 2008-11-19 2010-05-27 Bae Systems Plc Mirror structure
US20170264365A1 (en) * 2014-12-01 2017-09-14 Nec Corporation Free space optical receiver and free space optical receiving method
US20160204866A1 (en) * 2015-01-09 2016-07-14 Don M. Boroson Ground terminal design for high rate direct to earth optical communications
WO2017098223A1 (en) * 2015-12-09 2017-06-15 Bae Systems Plc Improvements in and relating to remote sensing
CN107040316A (en) * 2016-12-22 2017-08-11 华中科技大学 A kind of inexpensive spatial coherence photoreceiver of multiple aperture and signal receiving demodulation method
WO2018139357A1 (en) * 2017-01-27 2018-08-02 国立研究開発法人情報通信研究機構 Spatial optical communication device and method
WO2018180912A1 (en) * 2017-03-28 2018-10-04 日本電気株式会社 Signal processing device and signal processing method
WO2018198891A1 (en) * 2017-04-25 2018-11-01 日本電気株式会社 Signal synthesizing device and signal synthesizing method

Non-Patent Citations (5)

* Cited by examiner, † Cited by third party
Title
Christophe Boulet, Mike Griffith, L. C. Laycock, Andrew McCarthy, "Development of a small aperture bimorph deformable mirror for a free-space optical communications system," Proc. SPIE 7833, Unmanned/Unattended Sensors and Sensor Networks VII, 78330D (28 October 2010); *
D. J. Geisler et al, "Experimental demonstration of multi-aperture digital coherent combining over a 3.2-km free-space link," Proc. SPIE 10096, Free-Space Laser Communication and Atmospheric Propagation XXIX, 100960C, 24 February 2017. *
Geisler, D J et al, "Multi-aperture digital coherent combining for free-space optical communication receivers", Optics Express, Vol 24, No.12, pp12661-12671, 1 June 2016. *
M. S. Griffith, L. C. Laycock, J. M. Bagshaw, D. Rowe, "Dual-use bimorph deformable mirrors," Proc. SPIE 5989, Technologies for Optical Countermeasures II; Femtosecond Phenomena II; and Passive Millimetre-Wave and Terahertz Imaging II, 598906 (3 November 2005); *
Mike S. Griffith et al, "Progress on the development of a zonal bimorph deformable mirror," Proc. SPIE 7015, Adaptive Optics Systems, 70153L (14 July 2008); *

Also Published As

Publication number Publication date
GB2580044A (en) 2020-07-15
GB201820774D0 (en) 2019-02-06

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