中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

10 records (took 0.046 seconds)

    1.
    发明专利
    未知

    公开(公告)号：DE69716072T2

    公开(公告)日：2003-06-05

    申请号：DE69716072

    申请日：1997-07-23

    Applicant: ST MICROELECTRONICS SRL

    Inventor： FINCATO ANTONIO ,  LENZI MAURIZIO ,  DI MOLA DOMENICO

    IPC: G02F1/01 ,  G02F1/313 ,  H04B10/02 ,  H04B10/43 ,  H04J14/02

    Abstract: Tunable add/drop optical device for injecting or extracting (add/drop) at least a selected optical channel or carrier wavelength in or from a set of multiplexed channels or carriers of different wavelengths comprising a plurality of directional couplers (AD1 . . . AD6) and a plurality of phase-shift stages (SF1 . . . SF5) alternately connected in cascade, wherein each phase-shift stage defines a certain optical path length difference (DELTAL1 . . . DELTAL5) between two distinct optical paths of the stage. The tuning is performed modifying the refraction index of one path of said phase shift stages by means of Joule effect heating strips (L1 . . . L5) or by means of metallic field plates adapted to receive a signal suitable to modify the electric field intensity. The first two phase-shift stages of said plurality of phase-shift stages have differences of length of optical paths different from each other and in a preestablished ratio while the remaining phase-shift stages have differences of length of optical paths identical. It is thus possible to provide a device having an exceptionally flat cross response characteristic, substantially free of ripple due to an inevitable truncation of the Fourier expansion series.

    2.
    发明专利
    未知

    公开(公告)号：DE69713507D1

    公开(公告)日：2002-07-25

    申请号：DE69713507

    申请日：1997-07-23

    Applicant: ST MICROELECTRONICS SRL

    Inventor： CHIARETTI GUIDO ,  FINCATO ANTONIO

    IPC: G02B6/12 ,  G02B6/13 ,  G02B6/293 ,  G02B6/34 ,  H04B10/02 ,  H04J14/00 ,  H04J14/02

    Abstract: An optical module for access networks to wideband communication systems composed of passive optical networks PON, in such a way as to permit the transportation in particularly efficient manner of flows of numeric and/or analog information, relating to different types of services such as: telephone services in a broad sense, intended as traditional telephone services and data transmission services, and services of more strictly television nature such as the distribution of the CATV.

    3.
    发明专利
    未知

    公开(公告)号：DE69716072D1

    公开(公告)日：2002-11-07

    申请号：DE69716072

    申请日：1997-07-23

    Applicant: ST MICROELECTRONICS SRL

    Inventor： FINCATO ANTONIO ,  LENZI MAURIZIO ,  DI MOLA DOMENICO

    IPC: G02F1/01 ,  G02F1/313 ,  H04B10/02 ,  H04B10/43 ,  H04J14/02

    Abstract: Tunable add/drop optical device for injecting or extracting (add/drop) at least a selected optical channel or carrier wavelength in or from a set of multiplexed channels or carriers of different wavelengths comprising a plurality of directional couplers (AD1 . . . AD6) and a plurality of phase-shift stages (SF1 . . . SF5) alternately connected in cascade, wherein each phase-shift stage defines a certain optical path length difference (DELTAL1 . . . DELTAL5) between two distinct optical paths of the stage. The tuning is performed modifying the refraction index of one path of said phase shift stages by means of Joule effect heating strips (L1 . . . L5) or by means of metallic field plates adapted to receive a signal suitable to modify the electric field intensity. The first two phase-shift stages of said plurality of phase-shift stages have differences of length of optical paths different from each other and in a preestablished ratio while the remaining phase-shift stages have differences of length of optical paths identical. It is thus possible to provide a device having an exceptionally flat cross response characteristic, substantially free of ripple due to an inevitable truncation of the Fourier expansion series.

    6.
    发明专利
    未知

    公开(公告)号：DE60321583D1

    公开(公告)日：2008-07-24

    申请号：DE60321583

    申请日：2003-12-24

    Applicant: ST MICROELECTRONICS SRL

    Inventor： FINCATO ANTONIO

    IPC: G02B6/42

    Abstract: An optical module (300) comprising: an optoelectronic device (12) and a support substrate (11) to which is fixed the optoelectronic device; a coupling device (14) for the optical coupling of said optoelectronic device (12) a guided propagation means of electromagnetic radiation (100). The coupling device is a reflection device (14) it is integrated into the substrate (11) in such a way as to be inserted into an optical path between the optoelectronic device (12) and the propagation means (100).

    10.
    发明专利
    未知

    公开(公告)号：DE69713507T2

    公开(公告)日：2003-03-06

    申请号：DE69713507

    申请日：1997-07-23

    Applicant: ST MICROELECTRONICS SRL

    Inventor： CHIARETTI GUIDO ,  FINCATO ANTONIO

    IPC: G02B6/12 ,  G02B6/13 ,  G02B6/293 ,  G02B6/34 ,  H04B10/02 ,  H04J14/00 ,  H04J14/02

    Abstract: An optical module for access networks to wideband communication systems composed of passive optical networks PON, in such a way as to permit the transportation in particularly efficient manner of flows of numeric and/or analog information, relating to different types of services such as: telephone services in a broad sense, intended as traditional telephone services and data transmission services, and services of more strictly television nature such as the distribution of the CATV.

Patent Agency Ranking