JPS6490696A - Wavelength/time division optical exchange - Google Patents

Wavelength/time division optical exchange

Info

Publication number
JPS6490696A
JPS6490696A JP24834787A JP24834787A JPS6490696A JP S6490696 A JPS6490696 A JP S6490696A JP 24834787 A JP24834787 A JP 24834787A JP 24834787 A JP24834787 A JP 24834787A JP S6490696 A JPS6490696 A JP S6490696A
Authority
JP
Japan
Prior art keywords
wavelength
time
time division
multiplicity
division
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.)
Pending
Application number
JP24834787A
Other languages
Japanese (ja)
Inventor
Shuji Suzuki
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.)
NEC Corp
Original Assignee
NEC 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 NEC Corp filed Critical NEC Corp
Priority to JP24834787A priority Critical patent/JPS6490696A/en
Priority to DE3853935T priority patent/DE3853935T2/en
Priority to EP88116057A priority patent/EP0310058B1/en
Priority to DE3856531T priority patent/DE3856531T2/en
Priority to CA000578787A priority patent/CA1331800C/en
Priority to EP94117609A priority patent/EP0642288B1/en
Priority to US07/251,486 priority patent/US5005166A/en
Publication of JPS6490696A publication Critical patent/JPS6490696A/en
Pending legal-status Critical Current

Links

Landscapes

  • Use Of Switch Circuits For Exchanges And Methods Of Control Of Multiplex Exchanges (AREA)

Abstract

PURPOSE:To obtain the number of channels more than the product of a wavelength division multiplicity and a time division multiplicity with the small number of parts by using plural variable wavelength selecting elements and an optical time switch wavelength converting circuit and converting a wavelength division multiplex and time division multiplex optical signal. CONSTITUTION:In the case of the wavelength time switch of the wavelength division multiplicity 2 and the time division multiplicity 2, the time division optical signal of the wavelength lambda1, lambda2 on an input light highway 1 is inputted to the variable wavelength selecting elements 3, 4 via an optical branching device 2. The elements 3, 4 select any wavelength for every time slot T1, T2, feed to the optical time switches 4, 5 to arbitrarily move between the time slots. The variable wavelength converting circuits 6, 7 respectively convert the outputs of the switches 4, 5 to any of the wavelength lambda1, lambda2 for every time slot and output. The output is synthesized in a photosynthesizer 8 and fed to an output highway 9. The conventional three step constitution is formed of one step to reduce the parts remarkably.
JP24834787A 1987-09-30 1987-09-30 Wavelength/time division optical exchange Pending JPS6490696A (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
JP24834787A JPS6490696A (en) 1987-09-30 1987-09-30 Wavelength/time division optical exchange
DE3853935T DE3853935T2 (en) 1987-09-30 1988-09-29 Time and wavelength division multiplexed switching system.
EP88116057A EP0310058B1 (en) 1987-09-30 1988-09-29 Time and wavelength division switching system
DE3856531T DE3856531T2 (en) 1987-09-30 1988-09-29 Time and wavelength division switching system
CA000578787A CA1331800C (en) 1987-09-30 1988-09-29 Time and wavelength division switching system
EP94117609A EP0642288B1 (en) 1987-09-30 1988-09-29 Time and wavelength division switching system
US07/251,486 US5005166A (en) 1987-09-30 1988-09-30 Time and wavelength division switching system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP24834787A JPS6490696A (en) 1987-09-30 1987-09-30 Wavelength/time division optical exchange

Publications (1)

Publication Number Publication Date
JPS6490696A true JPS6490696A (en) 1989-04-07

Family

ID=17176739

Family Applications (1)

Application Number Title Priority Date Filing Date
JP24834787A Pending JPS6490696A (en) 1987-09-30 1987-09-30 Wavelength/time division optical exchange

Country Status (1)

Country Link
JP (1) JPS6490696A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5005166A (en) * 1987-09-30 1991-04-02 Nec Corporation Time and wavelength division switching system
US5023863A (en) * 1988-07-18 1991-06-11 Fujitsu Limited Optical switching system
JPH0461593A (en) * 1990-06-29 1992-02-27 Nec Corp Wavelength division/time division composite channel
EP0499255A3 (en) * 1991-02-14 1993-11-10 Nec Corp Optical switching system for optical wavelength-division and time-division multiplexed signals
JPH06319162A (en) * 1993-04-30 1994-11-15 Nec Corp Multi-dimension transmission system and multi-dimension exchange network
US6023360A (en) * 1994-08-15 2000-02-08 Nippon Telegraph And Telephone Corporation Multiple-channel all-optical TDM-WDM converter and multiple-channel all-optical TDM demultiplexer

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5005166A (en) * 1987-09-30 1991-04-02 Nec Corporation Time and wavelength division switching system
US5023863A (en) * 1988-07-18 1991-06-11 Fujitsu Limited Optical switching system
JPH0461593A (en) * 1990-06-29 1992-02-27 Nec Corp Wavelength division/time division composite channel
EP0499255A3 (en) * 1991-02-14 1993-11-10 Nec Corp Optical switching system for optical wavelength-division and time-division multiplexed signals
EP0765097A3 (en) * 1991-02-14 1998-12-02 Nec Corporation Optical switching system for optical wavelength-division and time-division multiplexed signals
JPH06319162A (en) * 1993-04-30 1994-11-15 Nec Corp Multi-dimension transmission system and multi-dimension exchange network
US6023360A (en) * 1994-08-15 2000-02-08 Nippon Telegraph And Telephone Corporation Multiple-channel all-optical TDM-WDM converter and multiple-channel all-optical TDM demultiplexer

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