CA1107493A - Method and apparatus for determining ratio of core radius to cladding radius in clad optical fibers - Google Patents

Method and apparatus for determining ratio of core radius to cladding radius in clad optical fibers

Info

Publication number
CA1107493A
CA1107493A CA266,824A CA266824A CA1107493A CA 1107493 A CA1107493 A CA 1107493A CA 266824 A CA266824 A CA 266824A CA 1107493 A CA1107493 A CA 1107493A
Authority
CA
Canada
Prior art keywords
theta
cladding
radius
core
modulation component
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
CA266,824A
Other languages
English (en)
French (fr)
Inventor
Ralph E. Frazee, Jr.
Laurence S. Watkins
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
AT&T Corp
Original Assignee
Western Electric Co Inc
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 by Western Electric Co Inc filed Critical Western Electric Co Inc
Application granted granted Critical
Publication of CA1107493A publication Critical patent/CA1107493A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/41—Refractivity; Phase-affecting properties, e.g. optical path length
    • G01N21/412—Index profiling of optical fibres
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)
  • Length Measuring Devices By Optical Means (AREA)
  • Testing Of Optical Devices Or Fibers (AREA)
  • Light Guides In General And Applications Therefor (AREA)
CA266,824A 1975-12-17 1976-11-29 Method and apparatus for determining ratio of core radius to cladding radius in clad optical fibers Expired CA1107493A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US641,697 1975-12-17
US05/641,697 US4027977A (en) 1975-12-17 1975-12-17 Method and apparatus for determining ratio of core radius to cladding radius in clad optical fibers

Publications (1)

Publication Number Publication Date
CA1107493A true CA1107493A (en) 1981-08-25

Family

ID=24573490

Family Applications (1)

Application Number Title Priority Date Filing Date
CA266,824A Expired CA1107493A (en) 1975-12-17 1976-11-29 Method and apparatus for determining ratio of core radius to cladding radius in clad optical fibers

Country Status (9)

Country Link
US (1) US4027977A (cg-RX-API-DMAC7.html)
JP (1) JPS5274363A (cg-RX-API-DMAC7.html)
BE (1) BE849386A (cg-RX-API-DMAC7.html)
CA (1) CA1107493A (cg-RX-API-DMAC7.html)
DE (1) DE2656520C3 (cg-RX-API-DMAC7.html)
FR (1) FR2335824A1 (cg-RX-API-DMAC7.html)
GB (1) GB1549630A (cg-RX-API-DMAC7.html)
NL (1) NL171928C (cg-RX-API-DMAC7.html)
SE (1) SE416498B (cg-RX-API-DMAC7.html)

Families Citing this family (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4168907A (en) * 1977-12-30 1979-09-25 Bell Telephone Laboratories, Incorporated Method for inspecting transparent rods
US4227806A (en) * 1978-10-16 1980-10-14 Western Electric Company, Inc. Methods for non-destructively determining parameters of an optical fiber preform
JPS5724600U (cg-RX-API-DMAC7.html) * 1980-07-16 1982-02-08
US4492463A (en) * 1982-03-29 1985-01-08 At&T Bell Laboratories Method for inspecting multilayer transparent rods
JPS5930870U (ja) * 1982-08-23 1984-02-25 三菱重工業株式会社 落下容器保護構造
US4650322A (en) * 1984-09-07 1987-03-17 The Board Of Trustees Of The Leland Standford, Jr. University Method and means for high resolution measurement of fiber diameter
FR2572805A1 (fr) * 1984-11-06 1986-05-09 Thomson Csf Procede de mesure du centrage d'un barreau cylindrique dans un revetement transparent cylindrique et dispositif de mise en oeuvre
FR2584180A2 (fr) * 1985-06-28 1987-01-02 Thomson Csf Dispositif de mesure du centrage d'un barreau cylindrique dans un revetement transparent cylindrique
US4662743A (en) * 1985-11-01 1987-05-05 Sumitomo Electric Research Triangle, Inc. Method of measuring the geometry of optical fibers
AU585728B2 (en) * 1986-08-15 1989-06-22 Sumitomo Electric Industries, Ltd. Method and apparatus of measuring outer diameter and structure of optical fiber
US5176731A (en) * 1987-06-10 1993-01-05 U.S. Philips Corp. Device for performing measurements on a transparent object, method of manufacturing a fiber and fiber manufactured by means of said method
US4952226A (en) * 1989-02-27 1990-08-28 American Telephone And Telegraph Company Lightguide coating control
US4957526A (en) * 1989-06-02 1990-09-18 At&T Bell Laboratories Optical fiber coating control process
US4973343A (en) * 1989-06-02 1990-11-27 At&T Bell Laboratories Optical fiber coating control apparatus
FR2651312B1 (fr) * 1989-08-25 1992-01-17 France Etat Procede et dispositif de caracterisation geometrique de tubes transparents.
CA2083969A1 (en) * 1991-12-31 1993-07-01 Leslie James Button Measurement of fiber diameters and detection of defects
US5283628A (en) * 1991-12-31 1994-02-01 Corning Incorporated Method for measuring diameters of non-circular fibers
US5309221A (en) * 1991-12-31 1994-05-03 Corning Incorporated Measurement of fiber diameters with high precision
EP0905477A3 (en) * 1997-09-25 2000-08-09 Corning Incorporated Methods and apparatus for detecting core/cladding interfaces in optical waveguide blanks
SE523329C2 (sv) * 2000-06-20 2004-04-13 Ericsson Telefon Ab L M Bestämning av optisk fibertyp
FR2852389B1 (fr) * 2003-03-12 2005-05-13 Commissariat Energie Atomique Procede de mesure d'objets tridimensionnels par ombroscopie optique a une seule vue
JP4923255B2 (ja) * 2006-11-07 2012-04-25 国立大学法人横浜国立大学 円柱体の直径、屈折率、中心軸間距離及び入射光軸と間隔のなす角の測定方法およびこれを用いた装置
CN102297655B (zh) * 2010-06-24 2013-04-03 上海电缆研究所 光纤端面双向定位和同步测试的测试方法
US10901228B2 (en) * 2017-06-27 2021-01-26 The Boeing Company Cavity with curved beam replicator and method of determining a characteristic of a medium therein
CN115597505B (zh) * 2022-10-17 2025-12-19 领纤科技(南通)有限公司 反谐振空芯光纤尺寸参数测量系统及测量方法

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3797939A (en) * 1968-08-09 1974-03-19 T Pryor Diffractographic measurement of profile
US3659950A (en) * 1969-07-14 1972-05-02 Iris Corp Laser apparatus for detecting the size and form of filamentary material by measuring diffracted light
US3709610A (en) * 1970-05-20 1973-01-09 Holobeam Method and apparatus for measuring and controlling the thickness of a filament or the like
US3879128A (en) * 1973-08-15 1975-04-22 Bell Telephone Labor Inc Method and apparatus for measuring the refractive index and diameter of optical fibers
US3925733A (en) * 1974-05-24 1975-12-09 Us Navy Maximum pulse density detector
US3982816A (en) * 1974-06-21 1976-09-28 Western Electric Company, Inc. Method for measuring the parameters of optical fibers

Also Published As

Publication number Publication date
FR2335824A1 (fr) 1977-07-15
NL7613917A (nl) 1977-06-21
NL171928B (nl) 1983-01-03
JPS5638898B2 (cg-RX-API-DMAC7.html) 1981-09-09
BE849386A (fr) 1977-04-01
US4027977A (en) 1977-06-07
DE2656520A1 (de) 1977-06-30
GB1549630A (en) 1979-08-08
DE2656520B2 (de) 1980-09-18
FR2335824B1 (cg-RX-API-DMAC7.html) 1981-12-24
DE2656520C3 (de) 1981-07-23
NL171928C (nl) 1983-06-01
JPS5274363A (en) 1977-06-22
SE416498B (sv) 1981-01-05
SE7613667L (sv) 1977-06-18

Similar Documents

Publication Publication Date Title
CA1107493A (en) Method and apparatus for determining ratio of core radius to cladding radius in clad optical fibers
JPH0428005Y2 (cg-RX-API-DMAC7.html)
US4569588A (en) Light frequency change detecting method and apparatus
US4334779A (en) Non-contact optical apparatus for measuring the length or speed of a relatively moving surface
US4188121A (en) Multiple ratio single particle counter
US4097158A (en) Half-maximum threshold circuit for optical micrometer
US5155372A (en) Optical inspection system utilizing wedge shaped spatial filter
EP0487189A2 (en) Particle diameter and velocity measuring apparatus
DE3886821T2 (de) Spannungsdetektor.
US6844537B2 (en) Method and device for measuring the velocity of a moving surface
US3795447A (en) Laser anemometer frequency to d.c. converter
JPS60501125A (ja) 流動媒体中の懸濁物質含有率を測定する方法及びその装置
CN1036093C (zh) 粒子测量方法及其粒子探测传感器
SU364877A1 (ru) Анализатор дисперсности гетерогенных систем
SU720406A1 (ru) Тахометрическое устройство
SU593122A1 (ru) Способ измерени коэфициента преломлени веществ
RU1807337C (ru) Устройство дл измерени размеров микрочастиц в жидкости
SU1092393A1 (ru) Способ обнаружени нефт ной пленки на поверхности водоемов
RU2020520C1 (ru) Способ определения скорости движения судна относительно водной поверхности и устройство для его осуществления
SU1027562A1 (ru) Способ измерени переходного ослаблени между двум каналами волоконно-оптического ответвител
SU1397728A1 (ru) Устройство дл бесконтактного определени высоты шероховатости поверхности
RU1820206C (ru) Способ определени шероховатости поверхности детали
SU1682770A1 (ru) Устройство дл контрол шероховатости поверхности издели
SU1711001A1 (ru) Устройство дл контрол шероховатости поверхности
SU901910A1 (ru) Способ измерени скоростей частиц в полидисперсном потоке

Legal Events

Date Code Title Description
MKEX Expiry