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    1.
    发明专利
    未知

    公开(公告)号：DE602005000298T2

    公开(公告)日：2007-07-05

    申请号：DE602005000298

    申请日：2005-07-20

    Applicant: LUCENT TECHNOLOGIES INC

    Inventor： KILPER DANIEL CHARLES ,  RAGHAVAN NARASIMHAN ,  RICHEY ELIZABETH O ,  TAEGER SYDNEY A ,  WHITE CHRISTOPHER ALAN

    IPC: H04J14/02 ,  H04B10/17 ,  H04B10/29

    Abstract: A channel-growth plan for an optical transmission system selects channels such that the transients that result in the channels that survive a network failure, such as an upstream fiber cut, are either minimized or effectively handled by some transient-control technique. In one embodiment, the growth plan may try to keep post-transient surviving channel total power gain equal to the pre-transient total power gain. Alternatively, the growth plan may try to distribute the surviving channels uniformly over the pre-transient channel-frequency range. Other manifestations are to keep (1) the average power of the surviving channels substantially equal to the average power of the pre-transient channels or (2) the average power of the post-transient surviving channels substantially equal to the power level of a specified channel. Transient-control can be balanced with conventional low-cost and high-performance goals to provide an effective hybrid channel-growth plan.

    2.
    发明专利
    未知

    公开(公告)号：DE60107375D1

    公开(公告)日：2004-12-30

    申请号：DE60107375

    申请日：2001-08-14

    Applicant: LUCENT TECHNOLOGIES INC

    Inventor： DE HAZAN YORAM ,  MAC CHESNEY JOHN BURNETTE ,  STOCKERT THOMAS EDWARD ,  WHITE CHRISTOPHER ALAN

    IPC: G02B6/00 ,  C03B37/014

    Abstract: The process time required for fluorine doping of porous silica bodies to produce fluorine doped preforms for the manufacture of depressed index optical fibers is reduced by separating the doping step into a predeposit step, where "excess" fluorine is deposited on the silica particles within the porous silica body, and a drive-in step where atomic fluorine is distributed into the silica particles. The drive-in step is conveniently combined with the sintering or consolidation step to further enhance the efficiency of the doping process and is carried out at a temperature above 1300 DEG C in an atmosphere devoid of fluorine.

    4.
    发明专利
    未知

    公开(公告)号：DE602005000298D1

    公开(公告)日：2007-01-11

    申请号：DE602005000298

    申请日：2005-07-20

    Applicant: LUCENT TECHNOLOGIES INC

    Inventor： KILPER DANIEL CHARLES ,  RAGHAVAN NARASIMHAN ,  RICHEY ELIZABETH O ,  TAEGER SYDNEY A ,  WHITE CHRISTOPHER ALAN

    IPC: H04J14/02 ,  H04B10/17 ,  H04B10/29

    Abstract: A channel-growth plan for an optical transmission system selects channels such that the transients that result in the channels that survive a network failure, such as an upstream fiber cut, are either minimized or effectively handled by some transient-control technique. In one embodiment, the growth plan may try to keep post-transient surviving channel total power gain equal to the pre-transient total power gain. Alternatively, the growth plan may try to distribute the surviving channels uniformly over the pre-transient channel-frequency range. Other manifestations are to keep (1) the average power of the surviving channels substantially equal to the average power of the pre-transient channels or (2) the average power of the post-transient surviving channels substantially equal to the power level of a specified channel. Transient-control can be balanced with conventional low-cost and high-performance goals to provide an effective hybrid channel-growth plan.

    5.
    发明专利
    未知

    公开(公告)号：DE60107375T2

    公开(公告)日：2005-11-24

    申请号：DE60107375

    申请日：2001-08-14

    Applicant: LUCENT TECHNOLOGIES INC

    Inventor： DE HAZAN YORAM ,  MAC CHESNEY JOHN BURNETTE ,  STOCKERT THOMAS EDWARD ,  WHITE CHRISTOPHER ALAN

    IPC: G02B6/00 ,  C03B37/014

    Abstract: The process time required for fluorine doping of porous silica bodies to produce fluorine doped preforms for the manufacture of depressed index optical fibers is reduced by separating the doping step into a predeposit step, where "excess" fluorine is deposited on the silica particles within the porous silica body, and a drive-in step where atomic fluorine is distributed into the silica particles. The drive-in step is conveniently combined with the sintering or consolidation step to further enhance the efficiency of the doping process and is carried out at a temperature above 1300 DEG C in an atmosphere devoid of fluorine.

    7.
    发明专利
    未知

    公开(公告)号：DE602005009293D1

    公开(公告)日：2008-10-09

    申请号：DE602005009293

    申请日：2005-07-20

    Applicant: LUCENT TECHNOLOGIES INC

    Inventor： KILPER DANIEL CHARLES ,  MARTELL CLAUDE A ,  RAGHAVAN NARASIMHAN ,  SADLER DAVID A ,  WHITE CHRISTOPHER ALAN

    IPC: H04J14/02 ,  H04B10/17 ,  H04B10/29

    Abstract: In an optical transmission system, operations of certain elements are adjusted in an individualized manner after detecting a change in the total optical power level corresponding to multiple optical channels in a link of the system in order to control transients in those channels. For example, in response to a sudden drop in the number of channels resulting from a fiber cut, the power levels of the optical pumps in a Raman amplifier in an OADM are adjusted to reduce transient gain errors in the surviving channels, where the adjustment to the pump power level for each different optical pump is a function of both the detected change in the total optical power level and at least one specified coefficient for that particular optical pump, in order to handle non-linearities in the response of the Raman amplifier to the sudden drop in the number of optical channels.

    9.
    发明专利
    未知

    公开(公告)号：DE69904680T2

    公开(公告)日：2003-11-13

    申请号：DE69904680

    申请日：1999-08-23

    Applicant: LUCENT TECHNOLOGIES INC

    Inventor： CARASSO MELANIE ,  PATEL SANJAY ,  VALDES JORGE LUIS ,  WHITE CHRISTOPHER ALAN

    IPC: B01J8/00 ,  G01N15/02 ,  G01N15/06 ,  G01N29/11 ,  G01N29/42 ,  G01N29/46 ,  G01N29/02 ,  G01N21/47

    Abstract: The invention provides an improved process for determining the characteristics of dispersed particles. The process involves directing waves (acoustic or light) into a dispersion, and measuring the attenuation of the waves for particular frequencies to provide an attenuation spectrum. The measured attenuation spectrum is then compared to a set of theory-based calculated attenuation spectra to determine the particle size distribution corresponding to the measured attenuation spectrum. Unlike previous processes, the particle size distribution is capable of being accurately determined by a single inversion algorithm, thus eliminating burdensome steps of previous methods.

    10.
    发明专利
    未知

    公开(公告)号：DE69904680D1

    公开(公告)日：2003-02-06

    申请号：DE69904680

    申请日：1999-08-23

    Applicant: LUCENT TECHNOLOGIES INC

    Inventor： CARASSO MELANIE ,  PATEL SANJAY ,  VALDES JORGE LUIS ,  WHITE CHRISTOPHER ALAN

    IPC: B01J8/00 ,  G01N15/02 ,  G01N15/06 ,  G01N29/11 ,  G01N29/42 ,  G01N29/46 ,  G01N29/02 ,  G01N21/47

    Abstract: The invention provides an improved process for determining the characteristics of dispersed particles. The process involves directing waves (acoustic or light) into a dispersion, and measuring the attenuation of the waves for particular frequencies to provide an attenuation spectrum. The measured attenuation spectrum is then compared to a set of theory-based calculated attenuation spectra to determine the particle size distribution corresponding to the measured attenuation spectrum. Unlike previous processes, the particle size distribution is capable of being accurately determined by a single inversion algorithm, thus eliminating burdensome steps of previous methods.

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