公开(公告)号：NO822345A

公开(公告)日：1983-01-07

申请号：NO822345

申请日：1982-07-05

Applicant: CSELT CENTRO STUDI LAB TELECOM

Inventor： GREGO GIORGIO

IPC: C03B37/025 ,  G01B7/12 ,  G01B

CPC classification number: G01B7/125 ,  C03B37/0253

公开(公告)号：IT1321120B1

公开(公告)日：2003-12-30

申请号：ITTO20001185

申请日：2000-12-20

Applicant: CSELT CENTRO STUDI LAB TELECOM

Inventor： GREGO GIORGIO

IPC: G06F20060101 ,  H04M20060101

公开(公告)号：IT1320534B1

公开(公告)日：2003-12-10

申请号：ITTO20000694

申请日：2000-07-11

Applicant: CSELT CENTRO STUDI LAB TELECOM

Inventor： GREGO GIORGIO

IPC: H04B7/26 ,  H04B7/005

公开(公告)号：DE728708T1

公开(公告)日：1997-09-25

申请号：DE96102655

申请日：1996-02-22

Applicant: CSELT CENTRO STUDI LAB TELECOM

Inventor： COCITO GIUSEPPE ,  GREGO GIORGIO

IPC: G02B6/00 ,  C03B37/027 ,  C03B37/12 ,  C03B37/15 ,  G02B6/024 ,  C03C25/00 ,  G02B6/16 ,  G02B6/10

Abstract: To manufacture polarisation-maintaining optical fibres, a fibre (8) is directly and continuously irradiated with at least one beam (9) of UV radiation during drawing and before application of external coatings.

公开(公告)号：DE69117426D1

公开(公告)日：1996-04-04

申请号：DE69117426

申请日：1991-10-21

Applicant: CSELT CENTRO STUDI LAB TELECOM

Inventor： COCITO GIUSEPPE ,  GREGO GIORGIO

IPC: G01J9/04 ,  G01N21/41

Abstract: The system uses a monochromatic radiation source (1) and an acousto-optic modulator (2), which is driven by a periodically variable frequency. The modulator emits a first beam having the same wavelength as the source and a second beam, whose wavelength and emission direction vary with the modulating frequency. After the second beam has been collimated, radiations of both beams are sent towards the component under test and an electrical signal with varying frequency is generated representative of the beat between such radiations at the output from the component. A spectral analysis of the beat signal is carried out, and the refractive index value is derived from the position taken by the various frequencies of the beat signal on a detection plane.

公开(公告)号：DE69104114D1

公开(公告)日：1994-10-27

申请号：DE69104114

申请日：1991-04-25

Applicant: CSELT CENTRO STUDI LAB TELECOM

Inventor： GREGO GIORGIO

IPC: G01J3/12 ,  G01J3/00 ,  G01J3/02 ,  G01J3/28 ,  G01J3/44 ,  G01J11/00 ,  G01N21/27 ,  G01N21/65

公开(公告)号：DE68916916D1

公开(公告)日：1994-08-25

申请号：DE68916916

申请日：1989-11-29

Applicant: CSELT CENTRO STUDI LAB TELECOM

Inventor： GREGO GIORGIO

IPC: H01J47/00 ,  H01J25/48

公开(公告)号：IT9067814A1

公开(公告)日：1992-04-23

申请号：IT6781490

申请日：1990-10-22

Applicant: CSELT CENTRO STUDI LAB TELECOM

Inventor： COCITO GIUSEPPE ,  GREGO GIORGIO

IPC: G01J9/04 ,  G01N20060101 ,  G01N21/41

公开(公告)号：CA2053724A1

公开(公告)日：1992-04-23

申请号：CA2053724

申请日：1991-10-18

Applicant: CSELT CENTRO STUDI LAB TELECOM

Inventor： COCITO GIUSEPPE ,  GREGO GIORGIO

IPC: G01J9/04 ,  G01N21/41 ,  G01N21/84

Abstract: The system uses a monochromatic radiation source (1) and an acousto-optic modulator (2), which is driven by a periodically variable frequency. The modulator emits a first beam having the same wavelength as the source and a second beam, whose wavelength and emission direction vary with the modulating frequency. After the second beam has been collimated, radiations of both beams are sent towards the component under test and an electrical signal with varying frequency is generated representative of the beat between such radiations at the output from the component. A spectral analysis of the beat signal is carried out, and the refractive index value is derived from the position taken by the various frequencies of the beat signal on a detection plane.

公开(公告)号：IT9067813D0

公开(公告)日：1990-10-22

申请号：IT6781390

申请日：1990-10-22

Applicant: CSELT CENTRO STUDI LAB TELECOM

Inventor： GREGO GIORGIO

IPC: G01J20060101 ,  G01J3/44