JPS5446059A - Connectoin loss measuring apparatus for plural optical fibers - Google Patents
Connectoin loss measuring apparatus for plural optical fibersInfo
- Publication number
- JPS5446059A JPS5446059A JP11246777A JP11246777A JPS5446059A JP S5446059 A JPS5446059 A JP S5446059A JP 11246777 A JP11246777 A JP 11246777A JP 11246777 A JP11246777 A JP 11246777A JP S5446059 A JPS5446059 A JP S5446059A
- Authority
- JP
- Japan
- Prior art keywords
- optical fibers
- measured
- fibers
- frequencies
- connectoin
- 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
Abstract
PURPOSE: To enable the losses at the point of connection to be measured in a short time with high accuracy by simultaneously receiving the exit rays from a plurality of optical fibers in the same photo detector and detecting these by separating them to the signal outputs corresponding to the respective optical fibers.
CONSTITUTION: Arrangement is so made that the exit rays from a plurality of the fibers 1 to be measured may be simultaneously received in the same photo detector 4. Modulating oscillators 5 of the number corresponding to the number of respective light sources 3 are provided and the respective frequencies f1 thru fn thereof are selected at frequencies sufficiently lower than the cutoff frequency fc at which the modulation signals do not propagate, then the light may be propagated in each optical fiber 1 at losses about the same as those when no modulation is applied. Hence, the signal outputs having frequency components corresponding to the frequencies f1 thru fn of the respective fibers 1 may be separated and measured in a frequecny selecting receiver 6
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11246777A JPS5446059A (en) | 1977-09-19 | 1977-09-19 | Connectoin loss measuring apparatus for plural optical fibers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11246777A JPS5446059A (en) | 1977-09-19 | 1977-09-19 | Connectoin loss measuring apparatus for plural optical fibers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5446059A true JPS5446059A (en) | 1979-04-11 |
Family
ID=14587362
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11246777A Pending JPS5446059A (en) | 1977-09-19 | 1977-09-19 | Connectoin loss measuring apparatus for plural optical fibers |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5446059A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57114836A (en) * | 1981-01-08 | 1982-07-16 | Nippon Telegr & Teleph Corp <Ntt> | Measuring apparatus for wavelength chracteristic of optical fiber |
| JPS6291832A (en) * | 1985-10-18 | 1987-04-27 | Fujikura Ltd | Measuring instrument for optical output of multicore optical fiber |
| JPS6331352U (en) * | 1986-08-15 | 1988-02-29 |
-
1977
- 1977-09-19 JP JP11246777A patent/JPS5446059A/en active Pending
Non-Patent Citations (1)
| Title |
|---|
| ANALYSTICAL CHEMISTRY * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57114836A (en) * | 1981-01-08 | 1982-07-16 | Nippon Telegr & Teleph Corp <Ntt> | Measuring apparatus for wavelength chracteristic of optical fiber |
| JPS6291832A (en) * | 1985-10-18 | 1987-04-27 | Fujikura Ltd | Measuring instrument for optical output of multicore optical fiber |
| JP2521429B2 (en) * | 1985-10-18 | 1996-08-07 | 株式会社フジクラ | Optical output measuring device for multi-fiber optical fiber |
| JPS6331352U (en) * | 1986-08-15 | 1988-02-29 |
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