JPS6441833A - S/n ratio improving apparatus for reflected signal - Google Patents
S/n ratio improving apparatus for reflected signalInfo
- Publication number
- JPS6441833A JPS6441833A JP62197592A JP19759287A JPS6441833A JP S6441833 A JPS6441833 A JP S6441833A JP 62197592 A JP62197592 A JP 62197592A JP 19759287 A JP19759287 A JP 19759287A JP S6441833 A JPS6441833 A JP S6441833A
- Authority
- JP
- Japan
- Prior art keywords
- pass filter
- level
- signal
- band
- band pass
- 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
- G01M11/31—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
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Indication And Recording Devices For Special Purposes And Tariff Metering Devices (AREA)
- Testing Of Optical Devices Or Fibers (AREA)
- Light Guides In General And Applications Therefor (AREA)
- Optical Communication System (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62197592A JPS6441833A (en) | 1987-08-07 | 1987-08-07 | S/n ratio improving apparatus for reflected signal |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62197592A JPS6441833A (en) | 1987-08-07 | 1987-08-07 | S/n ratio improving apparatus for reflected signal |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6441833A true JPS6441833A (en) | 1989-02-14 |
Family
ID=16377049
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62197592A Pending JPS6441833A (en) | 1987-08-07 | 1987-08-07 | S/n ratio improving apparatus for reflected signal |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6441833A (ja) |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4928246A (ja) * | 1972-07-10 | 1974-03-13 |
-
1987
- 1987-08-07 JP JP62197592A patent/JPS6441833A/ja active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4928246A (ja) * | 1972-07-10 | 1974-03-13 |
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