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.)
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.)
Nippon Telegraph and Telephone Corp
Original Assignee
Nippon Telegraph and Telephone Corp
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 Nippon Telegraph and Telephone CorpfiledCriticalNippon Telegraph and Telephone Corp
Priority to JP12464976ApriorityCriticalpatent/JPS5349451A/en
Publication of JPS5349451ApublicationCriticalpatent/JPS5349451A/en
Publication of JPS5640772B2publicationCriticalpatent/JPS5640772B2/ja
Investigating Or Analysing Materials By Optical Means
(AREA)
Testing Of Optical Devices Or Fibers
(AREA)
Light Guides In General And Applications Therefor
(AREA)
Abstract
PURPOSE: To detect difference in refractive index between the core and clad of optical fibers, through detection of a frequency at which strength of modulation signal transmitted through the optical fiber is highest.
COPYRIGHT: (C)1978,JPO&Japio
JP12464976A1976-10-181976-10-18Method of and apparatus for measuring difference in refractive index of optical fibers
GrantedJPS5349451A
(en)