GB2122371B - Optical switch - Google Patents

Optical switch

Info

Publication number: GB2122371B
Authority: GB; United Kingdom
Prior art keywords: optical switch; switch; optical
Prior art date: 1982-06-11
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

GB08315321A

Other versions

GB2122371A (en

GB8315321D0 (en

Inventor

Pierre Franco

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.)

Alcatel CIT SA

Nokia Inc

Original Assignee

Compagnie Industrielle de Telecommunication CIT Alcatel SA

Nokia 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.)

1982-06-11

Filing date

1983-06-03

Publication date

1986-01-02

1983-06-03 Application filed by Compagnie Industrielle de Telecommunication CIT Alcatel SA, Nokia Inc filed Critical Compagnie Industrielle de Telecommunication CIT Alcatel SA

1983-07-06 Publication of GB8315321D0 publication Critical patent/GB8315321D0/en

1984-01-11 Publication of GB2122371A publication Critical patent/GB2122371A/en

1986-01-02 Application granted granted Critical

1986-01-02 Publication of GB2122371B publication Critical patent/GB2122371B/en

Status Expired legal-status Critical Current

Classifications

- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J14/00—Optical multiplex systems
- H04J14/02—Wavelength-division multiplex systems
- H04J14/0287—Protection in WDM systems
- H04J14/0297—Optical equipment protection
- 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
- H04B10/03—Arrangements for fault recovery
- H04B10/032—Arrangements for fault recovery using working and protection systems
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J14/00—Optical multiplex systems
- H04J14/02—Wavelength-division multiplex systems
- H04J14/0287—Protection in WDM systems
- H04J14/0293—Optical channel protection

Landscapes

Engineering & Computer Science (AREA)
Computer Networks & Wireless Communication (AREA)
Signal Processing (AREA)
Physics & Mathematics (AREA)
Electromagnetism (AREA)
Optical Couplings Of Light Guides (AREA)

GB08315321A 1982-06-11 1983-06-03 Optical switch Expired GB2122371B (en)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
FR8210197A FR2528586A1 (en)	1982-06-11	1982-06-11	OPTICAL SWITCHING DEVICE

Publications (3)

Publication Number	Publication Date
GB8315321D0 GB8315321D0 (en)	1983-07-06
GB2122371A GB2122371A (en)	1984-01-11
GB2122371B true GB2122371B (en)	1986-01-02

Family

ID=9274888

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
GB08315321A Expired GB2122371B (en)	1982-06-11	1983-06-03	Optical switch

Country Status (3)

Country	Link
JP (1)	JPS593412A (en)
FR (1)	FR2528586A1 (en)
GB (1)	GB2122371B (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE3587515T2 (en) *	1984-05-17	1994-03-17	Nippon Electric Co	Optical switching device.
KR100325687B1 (en)	1999-12-21	2002-02-25	윤덕용	A low-cost WDM source with an incoherent light injected Fabry-Perot semiconductor laser diode
JP2002062549A (en) *	2000-08-14	2002-02-28	Fujitsu Ltd	Optical switch switching control method, optical node device, and optical switch system
KR100496710B1 (en) *	2002-01-21	2005-06-28	노베라옵틱스코리아 주식회사	Bi-directional wavelength-division-multiplexing passive optical network utilizing wavelength-locked light sources by injected incoherent light
US7515626B2 (en)	2003-05-29	2009-04-07	Novera Optics, Inc.	Light source capable of lasing that is wavelength locked by an injected light signal
KR100955129B1 (en)	2003-05-30	2010-04-28	정보통신연구진흥원	Implementation Method of Wavelength Division Multiplexing Passive Network Using Incoherent Wideband Light Source
KR100698766B1 (en)	2005-09-07	2007-03-23	한국과학기술원	Obstacle location monitoring device for wavelength division multiplex passive optical subscriber network system and wavelength division multiplex passive optical subscriber network system having same
KR100785436B1 (en)	2005-09-20	2007-12-13	한국과학기술원	Wavelength Division Multiple Passive Optical Subscriber Network Converging Broadcast Service and Communication Service
US8571410B2 (en)	2006-10-11	2013-10-29	Novera Optics, Inc.	Mutual wavelength locking in WDM-PONS

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
GB1508806A (en) *	1976-02-06	1978-04-26	Vickers Ltd	Optical image-splitting systems
GB1581660A (en) *	1977-04-14	1980-12-17	Standard Telephones Cables Ltd	Fibre optical switches
GB2019032B (en) *	1978-01-14	1982-08-25	Festivate Ltd	Detonation of explosive charges using optical fibres
US4175827A (en) *	1978-02-21	1979-11-27	Sperry Rand Corporation	Electro-optical multiplexer having multiple frequency resonant excitation
JPS5537023A (en) *	1978-09-08	1980-03-14	Kokusai Denshin Denwa Co Ltd <Kdd>	Light source extending system of light relay
JPS6057254B2 (en) *	1979-05-23	1985-12-13	ケイディディ株式会社	Light source redundancy method for optical repeaters
JPS55162640A (en) *	1979-06-06	1980-12-18	Kokusai Denshin Denwa Co Ltd <Kdd>	Light source redundancy system in optical communication

1982
- 1982-06-11 FR FR8210197A patent/FR2528586A1/en active Granted
1983
- 1983-06-03 GB GB08315321A patent/GB2122371B/en not_active Expired
- 1983-06-10 JP JP10405483A patent/JPS593412A/en active Pending

Also Published As

Publication number	Publication date
FR2528586A1 (en)	1983-12-16
GB2122371A (en)	1984-01-11
FR2528586B1 (en)	1984-11-30
GB8315321D0 (en)	1983-07-06
JPS593412A (en)	1984-01-10

Publication	Publication Date	Title
DE3175092D1 (en)	1986-09-18	Optical switch
EP0147195A3 (en)	1985-08-07	Optical switch
DE3269990D1 (en)	1986-04-24	Optical switch
GB2161338B (en)	1987-12-02	Optical switch device
GB8310135D0 (en)	1983-05-18	Line switch
GB2096341B (en)	1984-11-07	Optical switch device
GB2119112B (en)	1985-08-29	Optical elements
EP0123488A3 (en)	1988-02-03	Optical switch
DE3377672D1 (en)	1988-09-15	Fibre-optic switching means
GB2070271B (en)	1983-11-23	Optical switch
GB2122371B (en)	1986-01-02	Optical switch
GB2126037B (en)	1986-03-19	Optical parametrons
GB2119538B (en)	1985-08-29	Fibre optic switch
GB8328056D0 (en)	1983-11-23	Switch means
DE3377601D1 (en)	1988-09-08	Switch
GB2083648B (en)	1985-03-27	An optical switch
DE3365435D1 (en)	1986-09-25	Optical switch
GB8313700D0 (en)	1983-06-22	Illiminated switch
DE3571703D1 (en)	1989-08-24	Optical switch
GB8312718D0 (en)	1983-06-15	Switch
GB8312504D0 (en)	1983-06-08	Switch
GB2200222B (en)	1989-06-01	Optical switch
GB8304737D0 (en)	1983-03-23	Contact lens
GB2068577B (en)	1984-04-18	Optical switch
GB2121978B (en)	1985-10-02	Optical elements

Legal Events

Date	Code	Title	Description
1995-02-01	PCNP	Patent ceased through non-payment of renewal fee	Effective date: 19940603