JPS57124228A - Standard optical fiber for excitation - Google Patents

Standard optical fiber for excitation

Info

Publication number
JPS57124228A
JPS57124228A JP986581A JP986581A JPS57124228A JP S57124228 A JPS57124228 A JP S57124228A JP 986581 A JP986581 A JP 986581A JP 986581 A JP986581 A JP 986581A JP S57124228 A JPS57124228 A JP S57124228A
Authority
JP
Japan
Prior art keywords
fiber
tested
refractive index
index difference
core diameter
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
JP986581A
Other languages
Japanese (ja)
Inventor
Masamitsu Tokuda
Tsuneo Horiguchi
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 Corp filed Critical Nippon Telegraph and Telephone Corp
Priority to JP986581A priority Critical patent/JPS57124228A/en
Publication of JPS57124228A publication Critical patent/JPS57124228A/en
Pending 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
    • G01M11/00—Testing of optical apparatus; Testing structures by optical methods not otherwise provided for
    • G01M11/30—Testing of optical devices, constituted by fibre optics or optical waveguides
    • G01M11/31—Testing of optical devices, constituted by fibre optics or optical waveguides with a light emitter and a light receiver being disposed at the same side of a fibre or waveguide end-face, e.g. reflectometers

Abstract

PURPOSE:To decrease the change in the excitation mode distribution owing to the fluctuations in temp. and the patterns produced by a light source by controlling the mode distribution by using a fiber of a core diameter or specific refractive index difference slightly smaller than that of a fiber to be tested. CONSTITUTION:One end of a fiber 1 of a core diameter or specific refractive index difference slightly smaller than that of a test fiber is connected to an optical connector 4 for connection to a light source, and the other end is connected at a connection point 3 to one end of a standard parameter fiber 2 necessary for measuring the rate of attenuation of Rayleigh scattering reflection. The other end of the fiber 2 is connected to a fiber to be tested. The core diameter or specific refractive index difference of a small diameter fiber 1 is selected in such a way that the excitation mode distribution to the fiber to be tested assumes a steady mode, and the rate of attenuation of Rayleigh scattering reflection and the loss of connection between the standard parameter fiber 2 and the test fiber are measured. Thereby, the device of simple constitution and high long-term reliability is obtained.
JP986581A 1981-01-26 1981-01-26 Standard optical fiber for excitation Pending JPS57124228A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP986581A JPS57124228A (en) 1981-01-26 1981-01-26 Standard optical fiber for excitation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP986581A JPS57124228A (en) 1981-01-26 1981-01-26 Standard optical fiber for excitation

Publications (1)

Publication Number Publication Date
JPS57124228A true JPS57124228A (en) 1982-08-03

Family

ID=11732028

Family Applications (1)

Application Number Title Priority Date Filing Date
JP986581A Pending JPS57124228A (en) 1981-01-26 1981-01-26 Standard optical fiber for excitation

Country Status (1)

Country Link
JP (1) JPS57124228A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6215430A (en) * 1985-07-15 1987-01-23 Fujitsu Ltd Optical fiber measuring instrument
JPH055674A (en) * 1991-06-28 1993-01-14 Furukawa Electric Co Ltd:The Parallel measurement of optical fiber
NL9400638A (en) * 1993-04-22 1994-11-16 Felten & Guilleaume Energie Measurement standard for optical attenuation measurements.

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5199549A (en) * 1975-02-28 1976-09-02 Fujitsu Ltd HANDOTAIHATSUKOSOSHITO HIKARIFUAIBANO KETSUGOJOTAINO KENSAHOHO
JPS534556A (en) * 1976-07-02 1978-01-17 Fujikura Ltd Optical communication system

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5199549A (en) * 1975-02-28 1976-09-02 Fujitsu Ltd HANDOTAIHATSUKOSOSHITO HIKARIFUAIBANO KETSUGOJOTAINO KENSAHOHO
JPS534556A (en) * 1976-07-02 1978-01-17 Fujikura Ltd Optical communication system

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6215430A (en) * 1985-07-15 1987-01-23 Fujitsu Ltd Optical fiber measuring instrument
JPH0362211B2 (en) * 1985-07-15 1991-09-25 Fujitsu Ltd
JPH055674A (en) * 1991-06-28 1993-01-14 Furukawa Electric Co Ltd:The Parallel measurement of optical fiber
NL9400638A (en) * 1993-04-22 1994-11-16 Felten & Guilleaume Energie Measurement standard for optical attenuation measurements.

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