WO2001063962B1 - Crossconnect switch with large array size and high bitrate using wideband switch technology - Google Patents

Crossconnect switch with large array size and high bitrate using wideband switch technology

Info

Publication number
WO2001063962B1
WO2001063962B1 PCT/US2001/005789 US0105789W WO0163962B1 WO 2001063962 B1 WO2001063962 B1 WO 2001063962B1 US 0105789 W US0105789 W US 0105789W WO 0163962 B1 WO0163962 B1 WO 0163962B1
Authority
WO
Grant status
Application
Patent type
Prior art keywords
signals
input
switch
array
output
Prior art date
Application number
PCT/US2001/005789
Other languages
French (fr)
Other versions
WO2001063962A3 (en )
WO2001063962A2 (en )
Inventor
Jules D Levine
Christopher W Weller
Thomas W Myers
Stanley Freske
Original Assignee
Teraburst Networks 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.)
Filing date
Publication date

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04QSELECTING
    • H04Q11/00Selecting arrangements for multiplex systems
    • H04Q11/0001Selecting arrangements for multiplex systems using optical switching
    • H04Q11/0005Switch and router aspects
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04JMULTIPLEX COMMUNICATION
    • H04J2203/00Aspects of optical multiplex systems other than those covered by H04J14/00
    • H04J2203/0001Provisions for broadband connections in integrated services digital network using frames of the Optical Transport Network [OTN] or using synchronous transfer mode [STM], e.g. SONET, SDH
    • H04J2203/0003Switching fabrics, e.g. transport network, control network
    • H04J2203/0012Switching modules and their interconnections
    • H04J2203/0016Crossbar
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04QSELECTING
    • H04Q11/00Selecting arrangements for multiplex systems
    • H04Q11/0001Selecting arrangements for multiplex systems using optical switching
    • H04Q11/0005Switch and router aspects
    • H04Q2011/0007Construction
    • H04Q2011/0024Construction using space switching
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04QSELECTING
    • H04Q11/00Selecting arrangements for multiplex systems
    • H04Q11/0001Selecting arrangements for multiplex systems using optical switching
    • H04Q11/0005Switch and router aspects
    • H04Q2011/0007Construction
    • H04Q2011/0035Construction using miscellaneous components, e.g. circulator, polarisation, acousto/thermo optical

Abstract

This invention provides a permutation switch array using analog pasthrough elements. Incoming optical signals are transferred to the microwave domain, and the permutation switch array provides the necessary switching functions. After switching has been achieved, the switched signals are then reconverted to the optical domain. In a preferred embodiment, the permutation switching array is an NxN array. Coupled to the input and the output of the permutation switching array are 1xN digital switches that perform error correcting functions.

Claims

AMENDED CLAIMS
[received by the International Bureau on 19 November 2001 (19 1 1.01), original claims 1, 5, 10, 13, 20 and 21 amended; ; remaining claims unchanged (4 pages)]
1. An apparatus for switching opacal signals, compnsmg' an input transceiver that receives input optical signals and generates input microwave signals corresponding thereto; a permutation switch array coupled to the input transceiver, the permutation switch airay including analog switching elements and operating to switch input microwave signals thereby resulting in output microwave signals, said permutation switch array including a multilevel hierarchical array of switching elements; and an output receiver that receives the output microwave signals and generates output optical signals corresponding thereto.
2. An apparatus according to claim 1 , wherein the analog switching elements are passive elements.
3. An apparatus according to claim 1, wherein the analog switching elements are large bandwidth passthrough elements.
4. An apparatus according to claim 1, wherein the permutation switch array operates to switch a selected microwave input signal corresponding to a selected microwave input port to a selected microwave output port, the selected microwave input port is selected from a plurality of microwave input ports, and the selected microwave output pert is selected from a plurality of microwave output ports.
5. An apparatus for switching optical signals, cornprising: an input transceiver card that receives input opncal signals and generates input microwave signals corresponding thereto; a permutation switch array card coupled to the input transceiver, the permutation switch array card including analog switching elements and operating to switch input microwave signals thereby resulting in output microwave signals, said permutanon switch array card including a multilevel cascaded array of switches; and an output transceiver card that receives the output microwave signals and generates output optical signals corresponding thereto, wherein the permutation switch array card operates to switch each of a plurality of input microwave elements to each of a plurality of output microwave elements.
6. An apparatus as claimed in claim 5, wherein the hierarchical layers are designed to rrimiπrize serial connectivity
7 An apparatus as claimed in claim 5, wherein each of the hierarchical layers includes a plurality of metallizanon mput lines corresponding to microwave layer inputs; a plurality of metallization output lines corresponding to microwave layer outputs; and 01/63962
14
a plurality of vias connecting each of the metallization input lines to each of the metallization output lines.
8 An apparatus according to claim 5, wherem the analog switching elements are passive elements.
9 An apparatus according to claim 5, wherein the analog switching elements arc large band idth passthrough elements.
10. A permutation switch array comprising: structure which converts a plurahty of optical signals into a plurality of electrical signals; a plurality of inputs which receive the plurality of electrical signals; a plurality of outputs, a switching array coupled to the plurahty of inputs and outputs, the switching array mcluding a plurahty of analog switchmg elements, each input having at most one analog switching clement coupled thereto, and each output having at most one analog switching element coupled thereto, said switching array including a multilevel hierarchical array of switching elements which switch the received electrical signals, and structure which converts a pltrraJαrv of switched electrical signals, received from said plurality of outputs, into a plurality of optical signals 11 An apparatus accorcLmg ro claim 10 wherein the analog switching elements are passive elements.
12. An apparatus according to claim 10 wherem the analog switching elements are large bandwidth passthrough elements.
13. A switch array comprising an opucal-to-electπcal convener that converts input optical signals to input electrical signals, a wideband switch that converts input electrical signals to output electrical signals, the wideband switch including an array of electrical analog switches, said wideband switch mcluding a multilevel cascaded array of passive switches, and an elecrncal-to- pαcal converter that converts output electrical signals to output optical converters.
14 A switch array as claimed in claim 13, wherem the wideband switch comprises: a first hierarchical arrangement of the electrical analog switches for signal selection, and a second hierarchical arrangement of the electrical analog switches for signal collection.
15. A switch array as claimed in claim 14, wherein the pattern of electrical analog switches in the first hierarchical arrangement and the second hierarchical arrangement is selected to minπnize insertion loss.
16 A switch as claimed in claim 14, wherein each electrical analog switch has eightfold outputs. 01/63962
15
17. A switch as claimed in claim 14, wherem the optical-to-electπcal converter includes a first digital signal reshaping function, and the electrical-to-optical converter includes a second digital signal reshaping function.
18. An analog switchmg element comprising: an input line; a plurahty of output lines, a substrate surface; a rocker plate having polygonal shape defined by a plurahty of circumferentially arranged polygonal edges, the rocker plate including a plurality of conductive pads arranged along the polygonal edges; a substantially πgid post that supports the rocker plate above the substrate surface at a horizontal pivot, the rocker plate being thinned n a region beyond the post to allow for flexibility in deformation, wherein the rocker plate operates to ult by the application of applied voltages to the polygonal edges so that the plate makes an electrical connection between the input line and a selected output line.
19. An analog switching element as claimed m claim 18, wherein the rocker plate is octagonal.
20. An array of electrical analog switches with multiple outlets comprising: a first transceiver changing optical signals into microwave signals; a plurality of electπcal analog switches coupled to said first transceiver and receiving said optical signals, said plurality of electrical analog switches being arranged in a fanout pattern for optimal signal selection followed by a reverse fanout signal pattern for optrmal signal collection, wherein the number of switches in series and the corresponding insertion loss is minimized, saidfanout pattern comprising plural hierarchical levels of passive switches and outputπng switched microwave signals, and a second transceiver, coupled to said plurahty of electπcal analog switches, for changing the switched microwave signals into optical signals.
21. An array of electπcal analog switches with multiple outlets, comprising: an input transceiver card which converts a plurality of optical input signals into a plurahty of input electrical signals; a plurahty of electrical analog switches disposed on a switch card and receiving the plurahty of mput electπcal signals, said plurahty of electπcal analog switches bemg arranged m a fanout pattern for optimal signal selection, said fanout pattern comprising plural hierarchical levels of passive switches and outpurαng switched electrical signals; and a second transceiver, coupled to said plurahty of electπcal analog switches, for changing the switched electrical signals into output optical signals.
22. An array of electπcal analog switches as claimed in claim 21, wherein the number of switches in senes and the corresponding insertion loss is rriiinniized-
STATEMENT UNDER ARTICLE 19 (1)
In response to the September 18, 2001 International Search Report, kindly amend the
application as follows: IN THE CLAIMS:
Please amend independent Claims 1, 5, 10, 13, 20, and 21 by replacing pages 10-14 with the following replacement pages. Copies of the claims, as amended, are attached.
REMARKS
Claims 1-22 are pending in the application. Claims 1, 5, 10, 13, 18, 20 and 21 are independent.
Support for the claim amendments may be found in the specification , inter alia, at page 11, lines 13-18, and in Figures 8-10.
PCT/US2001/005789 2000-02-25 2001-02-23 Crossconnect switch with large array size and high bitrate using wideband switch technology WO2001063962B1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
US18504000 true 2000-02-25 2000-02-25
US60/185,040 2000-02-25
US60249200 true 2000-06-23 2000-06-23
US09/602,492 2000-06-23

Publications (3)

Publication Number Publication Date
WO2001063962A2 true WO2001063962A2 (en) 2001-08-30
WO2001063962A3 true WO2001063962A3 (en) 2002-02-28
WO2001063962B1 true true WO2001063962B1 (en) 2002-03-28

Family

ID=26880725

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2001/005789 WO2001063962B1 (en) 2000-02-25 2001-02-23 Crossconnect switch with large array size and high bitrate using wideband switch technology

Country Status (1)

Country Link
WO (1) WO2001063962B1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7283694B2 (en) 2001-10-09 2007-10-16 Infinera Corporation Transmitter photonic integrated circuits (TxPIC) and optical transport networks employing TxPICs
US6884950B1 (en) * 2004-09-15 2005-04-26 Agilent Technologies, Inc. MEMs switching system

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4399439A (en) * 1981-11-23 1983-08-16 Rca Corporation Signal switching matrix
WO2000040040A1 (en) * 1998-12-28 2000-07-06 Sun Microsystems, Inc. High-speed switching network using t-switches

Also Published As

Publication number Publication date Type
WO2001063962A3 (en) 2002-02-28 application
WO2001063962A2 (en) 2001-08-30 application

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