JPH0428005Y2 - - Google Patents

Info

Publication number
JPH0428005Y2
JPH0428005Y2 JP1990019503U JP1950390U JPH0428005Y2 JP H0428005 Y2 JPH0428005 Y2 JP H0428005Y2 JP 1990019503 U JP1990019503 U JP 1990019503U JP 1950390 U JP1950390 U JP 1950390U JP H0428005 Y2 JPH0428005 Y2 JP H0428005Y2
Authority
JP
Japan
Prior art keywords
signal
amplitude
delayed
output
pulse
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
JP1990019503U
Other languages
English (en)
Japanese (ja)
Other versions
JPH02118206U (en]
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed filed Critical
Publication of JPH02118206U publication Critical patent/JPH02118206U/ja
Application granted granted Critical
Publication of JPH0428005Y2 publication Critical patent/JPH0428005Y2/ja
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B11/00—Measuring arrangements characterised by the use of optical techniques
    • G01B11/08—Measuring arrangements characterised by the use of optical techniques for measuring diameters
    • G01B11/10—Measuring arrangements characterised by the use of optical techniques for measuring diameters of objects while moving
    • G01B11/105—Measuring arrangements characterised by the use of optical techniques for measuring diameters of objects while moving using photoelectric detection means
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B37/00—Manufacture or treatment of flakes, fibres, or filaments from softened glass, minerals, or slags
    • C03B37/01—Manufacture of glass fibres or filaments
    • C03B37/02—Manufacture of glass fibres or filaments by drawing or extruding, e.g. direct drawing of molten glass from nozzles; Cooling fins therefor
    • C03B37/025—Manufacture of glass fibres or filaments by drawing or extruding, e.g. direct drawing of molten glass from nozzles; Cooling fins therefor from reheated softened tubes, rods, fibres or filaments, e.g. drawing fibres from preforms
    • C03B37/0253—Controlling or regulating

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Manufacturing & Machinery (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Length Measuring Devices By Optical Means (AREA)
  • Communication Control (AREA)
  • Testing Of Optical Devices Or Fibers (AREA)
JP1990019503U 1979-09-04 1990-03-01 Expired JPH0428005Y2 (en])

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US06/072,011 US4280827A (en) 1979-09-04 1979-09-04 System for measuring optical waveguide fiber diameter

Publications (2)

Publication Number Publication Date
JPH02118206U JPH02118206U (en]) 1990-09-21
JPH0428005Y2 true JPH0428005Y2 (en]) 1992-07-07

Family

ID=22105002

Family Applications (2)

Application Number Title Priority Date Filing Date
JP12220180A Pending JPS5644820A (en) 1979-09-04 1980-09-03 Signal processing device
JP1990019503U Expired JPH0428005Y2 (en]) 1979-09-04 1990-03-01

Family Applications Before (1)

Application Number Title Priority Date Filing Date
JP12220180A Pending JPS5644820A (en) 1979-09-04 1980-09-03 Signal processing device

Country Status (6)

Country Link
US (1) US4280827A (en])
EP (1) EP0024953B1 (en])
JP (2) JPS5644820A (en])
AT (1) ATE17783T1 (en])
CA (1) CA1132374A (en])
DE (1) DE3071392D1 (en])

Families Citing this family (31)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1119599B (it) * 1979-12-07 1986-03-10 Cselt Centro Studi Lab Telecom Procedimento per la sagomatura sferica delle terminazioni delle fibre ottiche
US4343637A (en) * 1980-08-15 1982-08-10 Owens-Corning Fiberglas Corporation Method and apparatus for monitoring the diameter of fibers
FR2536860B1 (fr) * 1982-11-25 1985-06-14 Saint Gobain Isover Procede et dispositif pour l'analyse d'heterogeneites dans un materiau transparent
GB2148273B (en) * 1983-10-22 1986-11-05 Standard Telephones Cables Ltd Optical fibre fabrication by the rod-in-tube method
FR2584180A2 (fr) * 1985-06-28 1987-01-02 Thomson Csf Dispositif de mesure du centrage d'un barreau cylindrique dans un revetement transparent cylindrique
DE3715922C2 (de) * 1986-05-15 1995-07-20 Klaus Dipl Ing Jakob Verfahren und Anordnung zur Messung der Dicke eines fadenförmigen Objekts
US4775400A (en) * 1987-10-22 1988-10-04 Ppg Industries, Inc. Method of controlling glass fiber formation and control system
US4902327A (en) * 1988-04-27 1990-02-20 Raynet Corporation Monitoring fiber bend loss characteristics during manufacture
US4877436A (en) * 1989-03-13 1989-10-31 Sheinkop Isac Continuous viscosity monitoring of glass
JP2765033B2 (ja) * 1989-04-14 1998-06-11 住友電気工業株式会社 光ファイバーの線引方法
US5015867A (en) * 1989-08-30 1991-05-14 Ppg Industries, Inc. Apparatus and methods for measuring the diameter of a moving elongated material
US5172421A (en) * 1991-03-27 1992-12-15 Hughes Aircraft Company Automated method of classifying optical fiber flaws
US5309221A (en) * 1991-12-31 1994-05-03 Corning Incorporated Measurement of fiber diameters with high precision
US5283628A (en) * 1991-12-31 1994-02-01 Corning Incorporated Method for measuring diameters of non-circular fibers
US5314517A (en) * 1992-12-31 1994-05-24 Corning Incorporated Method controlling the draw rate in the drawing of a glass feedstock
US5408308A (en) * 1993-01-29 1995-04-18 Corning Incorporated Method for monitoring hermetically-coated fibers
US5443610A (en) * 1994-01-29 1995-08-22 Corning Incorporated Apparatus for controlling fiber diameter during drawing
US5519487A (en) * 1994-12-30 1996-05-21 Corning Incorporated Method for monitoring the position of a fiber
GB9722549D0 (en) 1997-10-24 1997-12-24 Univ Southampton Fabricating optical waveguide gratings and/or characterising optical waveguides
US6151336A (en) * 1998-02-11 2000-11-21 Sorrento Networks, Inc. Time division multiplexing expansion subsystem
US6400478B1 (en) 1998-04-02 2002-06-04 Sorrento Networks, Inc. Wavelength-division-multiplexed optical transmission system with expanded bidirectional transmission capacity over a single fiber
US6298103B1 (en) 1998-06-16 2001-10-02 Sorrento Networks Corporation Flexible clock and data recovery module for a DWDM optical communication system with multiple clock rates
US6371394B1 (en) 1998-12-23 2002-04-16 Pirelli Cavi E Sistemi S.P.A. Method for winding a fibre element having different longitudinal portions
AU7788800A (en) * 1999-10-29 2001-05-14 Pirelli Cavi E Sistemi S.P.A. Method of measuring the twist imparted to an optical fibre and procedure for processing an optical fibre using this method
US7072051B1 (en) 2002-05-09 2006-07-04 Powerscope Incorporated Laser diffraction process and apparatus for width measurement of elongated objects
BRPI0823097A2 (pt) 2008-09-19 2015-06-16 Prysmian Spa Processo para fabricar uma fibra óptica microestrutura, método para controlar uma fibra óptica microestruturada, e, sistema de controle de microestrutura.
JP5017456B2 (ja) * 2009-04-09 2012-09-05 株式会社フジクラ 空孔付き光ファイバの空孔径の測定方法、ならびに空孔付き光ファイバの製造方法
US9939390B2 (en) 2013-06-25 2018-04-10 Prysmian S.P.A. Method for detecting defects in a rod-shaped transparent object
CN107076544B (zh) 2014-06-17 2020-09-15 贺利氏石英北美有限责任公司 用于测量透明筒状制品的设备及方法
CN104537414B (zh) * 2015-01-08 2017-09-12 山东师范大学 基于光纤的光学条纹自动计数装置及计数方法
CN115093113B (zh) * 2022-06-17 2023-12-05 中国工程物理研究院激光聚变研究中心 一种用于微纳光纤拉制的直径在线监控系统

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4311707Y1 (en]) * 1966-07-19 1968-05-21
JPS49114475A (en]) * 1973-02-28 1974-10-31
US3982816A (en) * 1974-06-21 1976-09-28 Western Electric Company, Inc. Method for measuring the parameters of optical fibers
US4043673A (en) * 1975-04-09 1977-08-23 Autech Corporation Reticle calibrated diameter gauge
JPS5232380A (en) * 1975-09-05 1977-03-11 Yaskawa Electric Mfg Co Ltd Photoelectric type revolution speed detector
US4046536A (en) * 1976-08-13 1977-09-06 Western Electric Company, Inc. Monitoring and control of optical fiber diameters
US4176961A (en) * 1977-09-26 1979-12-04 Western Electric Co., Inc. Methods and apparatus for improving the resolution of measured parameters

Also Published As

Publication number Publication date
JPH02118206U (en]) 1990-09-21
DE3071392D1 (en) 1986-03-13
EP0024953A3 (en) 1982-01-20
EP0024953B1 (en) 1986-01-29
JPS5644820A (en) 1981-04-24
EP0024953A2 (en) 1981-03-11
US4280827A (en) 1981-07-28
CA1132374A (en) 1982-09-28
ATE17783T1 (de) 1986-02-15

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