JPS5627632A - Method for measuring transmission characteristic of optical fiber - Google Patents
Method for measuring transmission characteristic of optical fiberInfo
- Publication number
- JPS5627632A JPS5627632A JP10360379A JP10360379A JPS5627632A JP S5627632 A JPS5627632 A JP S5627632A JP 10360379 A JP10360379 A JP 10360379A JP 10360379 A JP10360379 A JP 10360379A JP S5627632 A JPS5627632 A JP S5627632A
- Authority
- JP
- Japan
- Prior art keywords
- optical fiber
- laser
- transmission characteristic
- extremely narrow
- dispersion
- 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
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
- G01M11/33—Testing of optical devices, constituted by fibre optics or optical waveguides with a light emitter being disposed at one fibre or waveguide end-face, and a light receiver at the other end-face
- G01M11/338—Testing of optical devices, constituted by fibre optics or optical waveguides with a light emitter being disposed at one fibre or waveguide end-face, and a light receiver at the other end-face by measuring dispersion other than PMD, e.g. chromatic dispersion
-
- 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
- G01M11/33—Testing of optical devices, constituted by fibre optics or optical waveguides with a light emitter being disposed at one fibre or waveguide end-face, and a light receiver at the other end-face
- G01M11/332—Testing of optical devices, constituted by fibre optics or optical waveguides with a light emitter being disposed at one fibre or waveguide end-face, and a light receiver at the other end-face using discrete input signals
Landscapes
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Optics & Photonics (AREA)
- Analytical Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Dispersion Chemistry (AREA)
- Spectrometry And Color Measurement (AREA)
Abstract
PURPOSE:To enable to measure the mode dispersion transmission characteristic of an optical fiber undergoing little effect of wavelength dispersion by using a particular laser beam aplit into that of an extremely narrow wavelength width. CONSTITUTION:A laser pulse beam generated by a tracking generator 1, a laser driver 2, a semiconductor laser 3, etc., passes a lens 4 and is split by a grating spectrograph 5 into a longitudinal mode pulse beam of extremely narrow wavelength width. Using this pulse beam as a light source, the laser beam enters an optical fiber 7 via an immersion cell 6, and the longitudinal mode beam that was propagated through the fiber 7 without undergoing the effect of wavelength dispersion because of the extremely narrow wavelength width of the beam is detected by an APD8 and applied to a spectrum analyzer 10. By comparing with the received light detection signal of the APD8 when the fiber 7 is cut at a position 1-2m from the end of incidence and the same light source is used, the mode dispersion transmission characteristic of the optical fiber can be measured with high accuracy unaffected by wavelength dispersion.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10360379A JPS5627632A (en) | 1979-08-16 | 1979-08-16 | Method for measuring transmission characteristic of optical fiber |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10360379A JPS5627632A (en) | 1979-08-16 | 1979-08-16 | Method for measuring transmission characteristic of optical fiber |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5627632A true JPS5627632A (en) | 1981-03-18 |
Family
ID=14358339
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP10360379A Pending JPS5627632A (en) | 1979-08-16 | 1979-08-16 | Method for measuring transmission characteristic of optical fiber |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5627632A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01118665A (en) * | 1987-07-23 | 1989-05-11 | General Textile Cogetex Sa De Droit Francais:Co | Product transfer apparatus for final work of quality inspection of fabric product especially, stocking or tights |
-
1979
- 1979-08-16 JP JP10360379A patent/JPS5627632A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01118665A (en) * | 1987-07-23 | 1989-05-11 | General Textile Cogetex Sa De Droit Francais:Co | Product transfer apparatus for final work of quality inspection of fabric product especially, stocking or tights |
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