JPS627521B2 - - Google Patents

Info

Publication number
JPS627521B2
JPS627521B2 JP58214765A JP21476583A JPS627521B2 JP S627521 B2 JPS627521 B2 JP S627521B2 JP 58214765 A JP58214765 A JP 58214765A JP 21476583 A JP21476583 A JP 21476583A JP S627521 B2 JPS627521 B2 JP S627521B2
Authority
JP
Japan
Prior art keywords
optical fiber
cladding
protective layer
refractive index
mode optical
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
JP58214765A
Other languages
English (en)
Japanese (ja)
Other versions
JPS60107001A (ja
Inventor
Katsuji Ito
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.)
Furukawa Electric Co Ltd
Original Assignee
Furukawa Electric Co Ltd
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 Furukawa Electric Co Ltd filed Critical Furukawa Electric Co Ltd
Priority to JP58214765A priority Critical patent/JPS60107001A/ja
Publication of JPS60107001A publication Critical patent/JPS60107001A/ja
Publication of JPS627521B2 publication Critical patent/JPS627521B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M3/00—Investigating fluid-tightness of structures
    • G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
    • G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
    • G01M3/042—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point by using materials which expand, contract, disintegrate, or decompose in contact with a fluid
    • G01M3/045—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point by using materials which expand, contract, disintegrate, or decompose in contact with a fluid with electrical detection means
    • G01M3/047—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point by using materials which expand, contract, disintegrate, or decompose in contact with a fluid with electrical detection means with photo-electrical detection means, e.g. using optical fibres

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optical Fibers, Optical Fiber Cores, And Optical Fiber Bundles (AREA)
  • Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
  • Photometry And Measurement Of Optical Pulse Characteristics (AREA)
  • Light Guides In General And Applications Therefor (AREA)
JP58214765A 1983-11-15 1983-11-15 検知用光ファイバ Granted JPS60107001A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP58214765A JPS60107001A (ja) 1983-11-15 1983-11-15 検知用光ファイバ

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP58214765A JPS60107001A (ja) 1983-11-15 1983-11-15 検知用光ファイバ

Publications (2)

Publication Number Publication Date
JPS60107001A JPS60107001A (ja) 1985-06-12
JPS627521B2 true JPS627521B2 (enrdf_load_stackoverflow) 1987-02-18

Family

ID=16661163

Family Applications (1)

Application Number Title Priority Date Filing Date
JP58214765A Granted JPS60107001A (ja) 1983-11-15 1983-11-15 検知用光ファイバ

Country Status (1)

Country Link
JP (1) JPS60107001A (enrdf_load_stackoverflow)

Also Published As

Publication number Publication date
JPS60107001A (ja) 1985-06-12

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