中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

30 records (took 0.022 seconds)

    OPTICAL RING NETWORK HAVING ENHANCED SECURITY AND REDUCED LOSS
    23.
    发明专利
    OPTICAL RING NETWORK HAVING ENHANCED SECURITY AND REDUCED LOSS 未知

    公开(公告)号：CA2311144A1

    公开(公告)日：2000-12-15

    申请号：CA2311144

    申请日：2000-06-02

    Applicant: LUCENT TECHNOLOGIES INC

    Inventor： ADAMS LAURA ELLEN ,  BROBERG ROBERT MARIO ,  ANDERSON JON

    IPC: H04B10/20 ,  H04B10/02 ,  H04B10/2581 ,  H04J14/00 ,  H04J14/02 ,  H04L12/42

    Abstract: A fiber-optic WDM ring carries communication traffic among a plurality of nodes, each node associated with respective subscriber premises. The WDM ring includes an optical add-drop module (OADM) at each node for adding and dropping signals associated with that node. The WDM ring also includes active terminal equipment at each node for conditioning incoming and outgoing data and for converting between the optical and electrical domains. The OADM at each of at least some nodes, to be referred to as enhanced nodes, is situated at a site physically separated from the powered terminal equipment, and is coupled to the powered terminal equipment via an optical medium. At each enhanced node, traffic not destined for that node is routed through no more than one enclosure on subscriber premises that requires a connection. If there is such enclosure, it contains the OADM.

    27.
    发明专利
    未知

    公开(公告)号：DE69810732D1

    公开(公告)日：2003-02-20

    申请号：DE69810732

    申请日：1998-10-13

    Applicant: LUCENT TECHNOLOGIES INC

    Inventor： ADAMS LAURA ELLEN ,  BETHEA CLYDE GEORGE ,  NYKOLAK GERALD ,  PEOPLE ROOSEVELT ,  TANBUN-EK TAWEE

    IPC: H04J14/00 ,  H01S5/00 ,  H01S5/02 ,  H01S5/026 ,  H01S5/06 ,  H01S5/0625 ,  H01S5/12 ,  H01S5/50 ,  H04B10/04 ,  H04B10/06 ,  H04B10/142 ,  H04B10/152 ,  H04J7/00 ,  H04J14/02 ,  H04J14/04

    Abstract: In a WDM fiber-optic network, a unique laser transmitter enables signals to be routed at three hierarchical levels: at one level discrimination among signal paths is based on N WDM wavelength channels, at another level discrimination is based on m AM subcarrier frequency channels, and at a third level discrimination is based on n FM subcarrier frequency channels. Thus, a total of Nmn distinguishable optical channels can be accommodated and a like number of users served. The laser transmitter comprises a broadband, tunable semiconductor laser which includes an intracavity, integrated composite reflector to which a tuning voltage and a FM dither signal are applied, an intracavity gain section to which drive current is applied, and an extracavity, integrated electroabsorption modulator to which an information (e.g., data, voice, video) signal and an AM dither signal are applied. The tuning voltage provides coarse wavelength tuning among N WDM channels, whereas the FM dither signal produces an additional m channels via FM-SCM. The AM dither likewise produces an additional n channels via AM-SCM.

    Optical ring network having enhanced security and reduced loss
    30.
    发明专利
    Optical ring network having enhanced security and reduced loss 未知

    公开(公告)号：AU3938800A

    公开(公告)日：2000-12-21

    申请号：AU3938800

    申请日：2000-06-08

    Applicant: LUCENT TECHNOLOGIES INC

    Inventor： ADAMS LAURA ELLEN ,  ANDERSON JON ,  BROBERG ROBERT MARIO

    IPC: H04B10/20 ,  H04B10/02 ,  H04B10/2581 ,  H04J14/00 ,  H04J14/02 ,  H04L12/42 ,  H04B10/00

    Abstract: A fiber-optic WDM ring carries communication traffic among a plurality of nodes, each node associated with respective subscriber premises. The WDM ring includes an optical add-drop module (OADM) at each node for adding and dropping signals associated with that node. The WDM ring also includes active terminal equipment at each node for conditioning incoming and outgoing data and for converting between the optical and electrical domains. The OADM at each of at least some nodes, to be referred to as enhanced nodes, is situated at a site physically separated from the powered terminal equipment, and is coupled to the powered terminal equipment via an optical medium. At each enhanced node, traffic not destined for that node is routed through no more than one enclosure on subscriber premises that requires a connection. If there is such enclosure, it contains the OADM.

Patent Agency Ranking