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1.发明专利
公开(公告)号：IT1256923B
公开(公告)日：1995-12-27
申请号：ITTO920681
申请日：1992-08-05
Applicant: CSELT CENTRO STUDI LAB TELECOM
Inventor： DE BERNARDI CARLO , MORASCA SALVATORE
IPC: G01N20060101 , G01N21/00 , G01N
Abstract: System for measuring the effective index of refraction of a group of optical fibres, in which one sends into a piece 2 of fibre being examined the radiation emitted by a source 1 of variable wavelength and performs a Fourier analysis of the spectral transmission function of the fibre, considered as a resonating cavity. Between the source 1 and a computer 7 performing said analysis are arranged means 4 of measuring the wavelength of the radiation emitted by the source 1, which operate by producing a staggering of the optical frequencies relative to the radio frequencies.
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公开(公告)号：IT1250546B
公开(公告)日：1995-04-20
申请号：ITTO911016
申请日：1991-12-23
Applicant: CSELT CENTRO STUDI LAB TELECOM
Inventor： DE BERNARDI CARLO , MORASCA SALVATORE
IPC: H01V
Abstract: Apparatus for measuring the effective index of refraction of optical fibres, in which a source 1 sends light radiation into a piece 2 of fibre, the wavelength of which can be made to vary within a predetermined interval, and a detector 5 collects the radiation emerging from the piece 2 and is connected to means 5-6-7 for measuring the strength of the radiation collected by the detector upon varying the wavelength, to determine the period of oscillation of the transmissivity or reflectivity of the fibre and to obtain from said period the value of the effective index of refraction.
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公开(公告)号：IT1245019B
公开(公告)日：1994-09-13
申请号：ITTO910060
申请日：1991-01-30
Applicant: CSELT CENTRO STUDI LAB TELECOM
Inventor： DE BERNARDI CARLO , MORASCA SALVATORE
Abstract: A pump system for lasers or amplifiers made of a waveguide presenting a monomode active region, in which the pump radiation is launched into a multimode guide surrounding the active region. Such a radiation is obtained as a sum of the radiations emitted by a plurality of independent sources.
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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
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.
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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
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).
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Patent Agency Ranking
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
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).
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公开(公告)号：IT9067157D0
公开(公告)日：1990-03-07
申请号：IT6715790
申请日：1990-03-07
Applicant: CSELT CENTRO STUDI LAB TELECOM
Inventor： CALDERA CLAUDIO , DE BERNARDI CARLO , MORASCA SALVATORE
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).
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公开(公告)号：DE69205814T2
公开(公告)日：1996-04-18
申请号：DE69205814
申请日：1992-12-22
Applicant: CSELT CENTRO STUDI LAB TELECOM
Inventor： DE BERNARDI CARLO , MORASCA SALVATORE , POZZI FABIO
Abstract: Apparatus for measuring the effective refractive index in optical fibres, in which a source (1) sends light radiations, the wavelength of which can be varied within a predetermined interval, into a fibre span (2), and a detector (5) collects the radiation outgoing from the span (2) and is connected with means (6, 7) 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 to obtain the effective refractive index from such period.
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公开(公告)号：DE69205814D1
公开(公告)日：1995-12-07
申请号：DE69205814
申请日：1992-12-22
Applicant: CSELT CENTRO STUDI LAB TELECOM
Inventor： DE BERNARDI CARLO , MORASCA SALVATORE , POZZI FABIO
Abstract: Apparatus for measuring the effective refractive index in optical fibres, in which a source (1) sends light radiations, the wavelength of which can be varied within a predetermined interval, into a fibre span (2), and a detector (5) collects the radiation outgoing from the span (2) and is connected with means (6, 7) 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 to obtain the effective refractive index from such period.
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公开(公告)号：DE548935T1
公开(公告)日：1993-12-16
申请号：DE92121833
申请日：1992-12-22
Applicant: CSELT CENTRO STUDI LAB TELECOM
Inventor： DE BERNARDI CARLO , MORASCA SALVATORE , POZZI FABIO
Abstract: Apparatus for measuring the effective refractive index in optical fibres, in which a source (1) sends light radiations, the wavelength of which can be varied within a predetermined interval, into a fibre span (2), and a detector (5) collects the radiation outgoing from the span (2) and is connected with means (6, 7) 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 to obtain the effective refractive index from such period.
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