公开(公告)号：IT1279163B1

公开(公告)日：1997-12-04

申请号：ITTO950188

申请日：1995-03-14

Applicant: CSELT CENTRO STUDI LAB TELECOM

Inventor： GNAZZO ANGELANTONIO ,  MORASCA SALVATORE

IPC: G02F20060101

Abstract: A device for compensating for the dispersion of optical signals transmitted on a fibre optic line that consists of a variable pass Bragg graticule in a semiconductor material 4, 14, 24, of predetermined length, inserted at one end of the line 1, 11, 21. The graticule 4, 14, 24 is associated with a pair of electrodes connected to an adjustable source of current 6, 16, 26 whose value, for a given amplitude of wavelength interval present in the signals, depends on the difference between the length of the line and that of another line that would introduce to the signals a dispersion that can be compensated with a graticule of the same length, to which current is not applied.

公开(公告)号：ITTO950188D0

公开(公告)日：1995-03-14

申请号：ITTO950188

申请日：1995-03-14

Applicant: CSELT CENTRO STUDI LAB TELECOM

Inventor： GNAZZO ANGELANTONIO ,  MORASCA SALVATORE

IPC: G02F20060101 ,  G02F1

公开(公告)号：ITTO920681D0

公开(公告)日：1992-08-05

申请号：ITTO920681

申请日：1992-08-05

Applicant: CSELT CENTRO STUDI LAB TELECOM

Inventor： DE BERNARDI CARLO ,  MORASCA SALVATORE ,  POZZI FABIO

IPC: G01N20060101 ,  G01N21/00

公开(公告)号：ITTO910060A1

公开(公告)日：1992-07-31

申请号：ITTO910060

申请日：1991-01-30

Applicant: CSELT CENTRO STUDI LAB TELECOM

Inventor： DE BERNARDI CARLO ,  MORASCA SALVATORE

IPC: G02B6/122 ,  G02B20060101 ,  H01S3/06 ,  H01S3/067 ,  H01S3/07 ,  H01S3/08 ,  H01S3/094

公开(公告)号：ITTO911016D0

公开(公告)日：1991-12-23

申请号：ITTO911016

申请日：1991-12-23

Applicant: CSELT CENTRO STUDI LAB TELECOM

Inventor： DE BERNARDI CARLO ,  MORASCA SALVATORE

公开(公告)号：IT8468260D0

公开(公告)日：1984-12-19

申请号：IT6826084

申请日：1984-12-19

Applicant: CSELT CENTRO STUDI LAB TELECOM

Inventor： MODONE EROS ,  MORASCA SALVATORE

IPC: G02B6/42 ,  G02B6/28 ,  G02B

公开(公告)号：CA2086046C

公开(公告)日：1996-04-16

申请号：CA2086046

申请日：1992-12-22

Applicant: CSELT CENTRO STUDI LAB TELECOM

Inventor： DE BERNARDI CARLO ,  MORASCA SALVATORE ,  POZZI FABIO

IPC: G01M11/02 ,  G01M11/00 ,  G01N21/45 ,  G02B6/00 ,  G01N21/41

Abstract: Apparatus for measuring the effective refractive index of optical fibres, in which a source applies light radiation, the wavelength of which can be varied over a predetermined range, into a fibre span, and a detector collects radiation leaving the span and is connected to means for measuring the intensity of the radiation collected by the detector as the wavelength varies, in order to determine the oscillation period of the fibre transmittance or reflectivity and thus to obtain the effective refractive index for the fibre forming the fibre span.

公开(公告)号：ITTO930958A1

公开(公告)日：1995-06-16

申请号：ITTO930958

申请日：1993-12-16

Applicant: CSELT CENTRO STUDI LAB TELECOM

Inventor： DE BENARDI CARLO ,  MORASCA SALVATORE ,  POZZI FABIO

IPC: G02B6/122 ,  G02B6/12 ,  H04J14/00 ,  H04J14/02

公开(公告)号：DE69106551T2

公开(公告)日：1995-05-24

申请号：DE69106551

申请日：1991-03-05

Applicant: CSELT CENTRO STUDI LAB TELECOM

Inventor： CALDERA CLAUDIO ,  DE BERNARDI CARLO ,  MORASCA SALVATORE

IPC: G02B6/122 ,  G02B6/13 ,  G02B6/132 ,  G02B6/12

Abstract: A method of adjusting the operation characteristics of integrated optical devices, allowing a considerable number of out-of-tolerace devices to be recovered by depositing on the surface whereupon the optical guides are manufactured, once the normal fabrication process is completed, a further layer of transparent material with suitable size and refractive index (SA).

公开(公告)号：IT1240124B

公开(公告)日：1993-11-27

申请号：IT6715790

申请日：1990-03-07

Applicant: CSELT CENTRO STUDI LAB TELECOM

Inventor： DE BERNARDI CARLO ,  MORASCA SALVATORE

IPC: G02B6/122 ,  G02B6/13 ,  G02B6/132 ,  C03B

Abstract: A method of adjusting the operation characteristics of integrated optical devices, allowing a considerable number of out-of-tolerace devices to be recovered by depositing on the surface whereupon the optical guides are manufactured, once the normal fabrication process is completed, a further layer of transparent material with suitable size and refractive index (SA).