CA2030229A1 - Wavelength division switching system with reduced optical components using optical switches - Google Patents

Wavelength division switching system with reduced optical components using optical switches

Info

Publication number
CA2030229A1
CA2030229A1 CA2030229A CA2030229A CA2030229A1 CA 2030229 A1 CA2030229 A1 CA 2030229A1 CA 2030229 A CA2030229 A CA 2030229A CA 2030229 A CA2030229 A CA 2030229A CA 2030229 A1 CA2030229 A1 CA 2030229A1
Authority
CA
Canada
Prior art keywords
wavelength
inputs
highways
coupling
groups
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.)
Granted
Application number
CA2030229A
Other languages
French (fr)
Other versions
CA2030229C (en
Inventor
Makoto Nishio
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
Makoto Nishio
Nec Corporation
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 Makoto Nishio, Nec Corporation filed Critical Makoto Nishio
Publication of CA2030229A1 publication Critical patent/CA2030229A1/en
Application granted granted Critical
Publication of CA2030229C publication Critical patent/CA2030229C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q11/00—Selecting arrangements for multiplex systems
    • H04Q11/0001—Selecting arrangements for multiplex systems using optical switching

Abstract

ABSTRACT OF THE DISCLOSURE
In a wavelength division switching system having m1 inlet highways and m2 outlet highways, m1 splitters are coupled respectively to the inlet highways to split each multiplex signal into m2 x n output signals for coupling to respective inputs of m2 x n optical switches. Each optical switch is responsive to a switching control signal for coupling one of its inputs to one of m2 x n tunable wavelength filters capable of passing one of n different wavelengths, in response to a wavelength selecting signal, to one of m2 x n fixed wavelength converters which are organized into m2 groups. These wavelength converters provide conversion of the input signals so that the converted wavelength is unique in each of the m2 groups. An array of m2 combiners are respectively associated with the groups of the fixed wavelength converters and with the outlet highways. Each combiner has n inputs coupled respectively to the outputs of the fixed wavelength converters of the associated group to multiplex signals appearing at the n inputs thereof for coupling to the associated outlet highway.
CA002030229A 1989-11-20 1990-11-19 Wavelength division switching system with reduced optical components using optical switches Expired - Lifetime CA2030229C (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP30270389 1989-11-20
JP1-302703 1989-11-20
JP1334343A JP2692316B2 (en) 1989-11-20 1989-12-21 Wavelength division optical switch
JP1-334343 1989-12-21

Publications (2)

Publication Number Publication Date
CA2030229A1 true CA2030229A1 (en) 1991-05-21
CA2030229C CA2030229C (en) 1994-09-20

Family

ID=26563239

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002030229A Expired - Lifetime CA2030229C (en) 1989-11-20 1990-11-19 Wavelength division switching system with reduced optical components using optical switches

Country Status (5)

Country Link
US (1) US5194977A (en)
EP (1) EP0429046B1 (en)
JP (1) JP2692316B2 (en)
CA (1) CA2030229C (en)
DE (1) DE69028073T2 (en)

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Also Published As

Publication number Publication date
EP0429046B1 (en) 1996-08-14
US5194977A (en) 1993-03-16
CA2030229C (en) 1994-09-20
DE69028073T2 (en) 1996-12-19
DE69028073D1 (en) 1996-09-19
EP0429046A3 (en) 1992-10-21
JPH03219793A (en) 1991-09-27
JP2692316B2 (en) 1997-12-17
EP0429046A2 (en) 1991-05-29

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Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed
MKEC Expiry (correction)

Effective date: 20121202