JPS5245383A - Apparatus for measuring refractive index distribution by reflection me thod - Google Patents

Apparatus for measuring refractive index distribution by reflection me thod

Info

Publication number
JPS5245383A
JPS5245383A JP12156375A JP12156375A JPS5245383A JP S5245383 A JPS5245383 A JP S5245383A JP 12156375 A JP12156375 A JP 12156375A JP 12156375 A JP12156375 A JP 12156375A JP S5245383 A JPS5245383 A JP S5245383A
Authority
JP
Japan
Prior art keywords
reflection
thod
refractive index
index distribution
measuring refractive
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.)
Pending
Application number
JP12156375A
Other languages
Japanese (ja)
Inventor
Satoshi Shiraishi
Hideyuki Takimoto
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.)
Sumitomo Electric Industries Ltd
Original Assignee
Sumitomo Electric Industries 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 Sumitomo Electric Industries Ltd filed Critical Sumitomo Electric Industries Ltd
Priority to JP12156375A priority Critical patent/JPS5245383A/en
Publication of JPS5245383A publication Critical patent/JPS5245383A/en
Pending 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

Landscapes

  • 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)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)

Abstract

PURPOSE:To feed reflection signals and reference signals alternately into one photo-detector by means of chopping, and take out differential signals through synchronous detection, thereby providing an inexpensive circuit eliminating a correction circuit.
JP12156375A 1975-10-07 1975-10-07 Apparatus for measuring refractive index distribution by reflection me thod Pending JPS5245383A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12156375A JPS5245383A (en) 1975-10-07 1975-10-07 Apparatus for measuring refractive index distribution by reflection me thod

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12156375A JPS5245383A (en) 1975-10-07 1975-10-07 Apparatus for measuring refractive index distribution by reflection me thod

Publications (1)

Publication Number Publication Date
JPS5245383A true JPS5245383A (en) 1977-04-09

Family

ID=14814320

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12156375A Pending JPS5245383A (en) 1975-10-07 1975-10-07 Apparatus for measuring refractive index distribution by reflection me thod

Country Status (1)

Country Link
JP (1) JPS5245383A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4220077Y1 (en) * 1965-09-20 1967-11-21

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4220077Y1 (en) * 1965-09-20 1967-11-21

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