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Patent Agency Ranking
公开(公告)号：JP2001230729A
公开(公告)日：2001-08-24
申请号：JP2000389668
申请日：2000-12-22
Applicant: LUCENT TECHNOLOGIES INC
Inventor： RASALA APRIL PATRICIA , WILFONG GORDON THOMAS
Abstract: PROBLEM TO BE SOLVED: To provide WDM cross-connection design non-blocking in the narrow sense for minimizing the number of wavelength converters required for supplying non-blocking characteristics in the narrow sense to WDM cross-connection. SOLUTION: The respective wavelength converters 11 are connected only to one input port of fabric 21 and the respective input ports of the fabric 21 are connected only to one wavelength converter 11. The input optical fiber 1 of the WDM cross-connection is connected to k1 pieces of the optical switches 13 of cross-connection for separating n1 pieces of wavelengths to n1 pieces of optical fibers and inputted to the respective wavelength converters 11. Thus, the respective wavelength converters 11 receive only n1 pieces of the optical fibers 14. The fabric 21 is provided with an output port connected to k2 pieces of output optical fibers 15 and in this case, k2 is an integer equal to the number of the output optical fibers connected to the output port of the fabric.
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公开(公告)号：JP2002305479A
公开(公告)日：2002-10-18
申请号：JP2002031628
申请日：2002-02-08
Applicant: LUCENT TECHNOLOGIES INC
Inventor： RASALA APRIL PATRICIA , WILFONG GORDON THOMAS
Abstract: PROBLEM TO BE SOLVED: To provide a broad/non-blocking WDM cross-connecting device 10 (cross-connect device) employing a comparatively small number of wavelength interchangers 13. SOLUTION: The device 10 consists of a first, a second and a third basic structures 11, 12 and 19, and one or more wavelength interchanges 13 for connecting the structures 11 and 12 with each other. A demand, requiring the change in wavelength, is routed through the structure 11, one or more wavelength interchangers 13 and the structure 12. A demand which does not require changes in wavelength is routed only through the structure 19. Thus, a routing algorithm for surely routing any kind of sequences of connection requests and retrieval can be utilized, without disturbing the request which are currently routed.
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公开(公告)号：CA2327904A1
公开(公告)日：2001-06-23
申请号：CA2327904
申请日：2000-12-08
Applicant: LUCENT TECHNOLOGIES INC
Inventor： WILFONG GORDON THOMAS , RASALA APRIL PATRICIA
Abstract: The present invention provides a strictly non-blocking WDM cross-connect th at utilizes a relatively small number of wavelength interchangers. In accordanc e with one embodiment, the WDM cross-connect utilizes n1k1 wavelength interchangers, where n1 is an integer equal to the number of wavelengths carried on an input optical fiber associated with the WDM cross-connect and k1 is the total number of input optical fibers to the WDM cross-connect. Each of the wavelength interchangers is connected to exactly one input port of the fabric and each input port of the fabric is connected to exactly one wavelength interchanges. The input optical fibers of the WDM cro ss- connect are connected to k1 optical switches of the cross-connect that separate out the n1 wavelengths onto n1 optical fibers, which are input to respective wavelength interchangers. Therefore, each wavelength interchanges receives exactly n1 optical fibers. The fabric has output ports that are connected to k2 output optical fibers, where k2 is an integer equal to the number of output optical fibers that are connected to the output ports of the fabric. In accordance with another embodiment of the present invention, the WDM cross-connect comprises two fabrics and one or more wavelength interchangers that interconnect the fabrics. The cross-connect in accordance with this embodiment can be rendered strictly non-blocking by utilizing a number of wavelength interchangers equal to (k1 + k2) - 1, where k1 and k2 correspond to the numb er of input and output optical fibers, respectively, of the WDM cross-connect. In accordance with both of these embodiments, the number of input and output optical fibers of the strictly non-blocking WDM cross-connect can be unequal.
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公开(公告)号：CA2367939A1
公开(公告)日：2002-08-08
申请号：CA2367939
申请日：2002-01-16
Applicant: LUCENT TECHNOLOGIES INC
Inventor： RASALA APRIL PATRICIA , WILFONG GORDON THOMAS
Abstract: The present invention provides a wide-sense, non-blocking WDM cross-conne ct that utilizes a relatively small number of wavelength interchangers. The cro ss- connect of the present invention comprises first, second and third fabrics and one o r more wavelength interchangers that interconnect the first and second fabrics. Demands that require a change in wavelength are routed through the first fabric, through one or more of the wavelength interchangers, and through the second fabric. Demands that do not require a change in wavelength are only routed through the third fabric. A routing algorithm is utilized to ensure that any sequence of connection requests and withdrawals can be routed without disturbing any currently routed requests.
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公开(公告)号：CA2367939C
公开(公告)日：2006-06-06
申请号：CA2367939
申请日：2002-01-16
Applicant: LUCENT TECHNOLOGIES INC
Inventor： WILFONG GORDON THOMAS , RASALA APRIL PATRICIA
Abstract: The present invention provides a wide-sense, non-blocking WDM cross-conne ct that utilizes a relatively small number of wavelength interchangers. The cro ss- connect of the present invention comprises first, second and third fabrics and one o r more wavelength interchangers that interconnect the first and second fabrics. Demands that require a change in wavelength are routed through the first fabric, through one or more of the wavelength interchangers, and through the second fabric. Demands that do not require a change in wavelength are only routed through the third fabric. A routing algorithm is utilized to ensure that any sequence of connection requests and withdrawals can be routed without disturbing any currently routed requests.
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