GB2060869B - Secure optical data systems - Google Patents

Secure optical data systems

Info

Publication number
GB2060869B
GB2060869B GB7935825A GB7935825A GB2060869B GB 2060869 B GB2060869 B GB 2060869B GB 7935825 A GB7935825 A GB 7935825A GB 7935825 A GB7935825 A GB 7935825A GB 2060869 B GB2060869 B GB 2060869B
Authority
GB
United Kingdom
Prior art keywords
optical data
data systems
secure optical
secure
systems
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
GB7935825A
Other versions
GB2060869A (en
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.)
STC PLC
Original Assignee
Standard Telephone and Cables 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 Standard Telephone and Cables PLC filed Critical Standard Telephone and Cables PLC
Priority to GB7935825A priority Critical patent/GB2060869B/en
Publication of GB2060869A publication Critical patent/GB2060869A/en
Application granted granted Critical
Publication of GB2060869B publication Critical patent/GB2060869B/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
    • H04B10/80—Optical aspects relating to the use of optical transmission for specific applications, not provided for in groups H04B10/03 - H04B10/70, e.g. optical power feeding or optical transmission through water
    • H04B10/85—Protection from unauthorised access, e.g. eavesdrop protection

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Optical Communication System (AREA)
GB7935825A 1979-10-16 1979-10-16 Secure optical data systems Expired GB2060869B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB7935825A GB2060869B (en) 1979-10-16 1979-10-16 Secure optical data systems

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB7935825A GB2060869B (en) 1979-10-16 1979-10-16 Secure optical data systems

Publications (2)

Publication Number Publication Date
GB2060869A GB2060869A (en) 1981-05-07
GB2060869B true GB2060869B (en) 1983-11-02

Family

ID=10508536

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7935825A Expired GB2060869B (en) 1979-10-16 1979-10-16 Secure optical data systems

Country Status (1)

Country Link
GB (1) GB2060869B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE438396B (en) * 1983-09-01 1985-04-15 Ericsson Telefon Ab L M DEVICE TO DETECT LIGHT ENERGY DRAINAGE FROM OPTICAL FIBERS
GB2157523A (en) * 1984-04-09 1985-10-23 Marconi Co Ltd Secure optical communication system
SE9301710L (en) * 1993-05-18 1994-05-30 Televerket Method and apparatus for providing eavesdropping secure optical link
US20050174563A1 (en) * 2004-02-11 2005-08-11 Evans Alan F. Active fiber loss monitor and method

Also Published As

Publication number Publication date
GB2060869A (en) 1981-05-07

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Legal Events

Date Code Title Description
732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)
PE20 Patent expired after termination of 20 years

Effective date: 19991015