JPS61190874U - - Google Patents
Info
- Publication number
- JPS61190874U JPS61190874U JP7530285U JP7530285U JPS61190874U JP S61190874 U JPS61190874 U JP S61190874U JP 7530285 U JP7530285 U JP 7530285U JP 7530285 U JP7530285 U JP 7530285U JP S61190874 U JPS61190874 U JP S61190874U
- Authority
- JP
- Japan
- Prior art keywords
- optical fibers
- axis
- optical fiber
- ferromagnetic material
- straight portions
- 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
Landscapes
- Measuring Magnetic Variables (AREA)
- Light Guides In General And Applications Therefor (AREA)
Description
第１図はこの考案の一実施例の光フアイバ磁力
計を示す構成図、第２図は第１図に示した光フア
イバ束の断面図、第３図は従来の光フアイバ磁力
計の構成図である。
１……光源、４……光フアイバ、５……強磁性
体、６……光検知器、７……増幅器、８……位相
検波器、９……凸レンズ、１０……フアイバ束部
、１１……加算器。図中、同一符号は同一または
相当部分を示す。
Fig. 1 is a block diagram showing an optical fiber magnetometer according to an embodiment of this invention, Fig. 2 is a cross-sectional view of the optical fiber bundle shown in Fig. 1, and Fig. 3 is a block diagram of a conventional optical fiber magnetometer. It is. DESCRIPTION OF SYMBOLS 1...Light source, 4...Optical fiber, 5...Ferromagnetic material, 6...Photodetector, 7...Amplifier, 8...Phase detector, 9...Convex lens, 10...Fiber bundle part, 11 ...Adder. In the drawings, the same reference numerals indicate the same or corresponding parts.
Claims (1)
レーザの出射光を平行光にする手段と、上記平行
光の光軸に軸対称に配置され、それぞれの長さが
レーザ光の入力端から出力端において同一である
４本の光フアイバと、上記４本の光フアイバのう
ち３本の光フアイバの所定直線部がＸ軸、Ｙ軸お
よびＺ軸として固定され、その直線部にそれぞれ
施された強磁性体と、上記４本の光フアイバを通
過したレーザ光を電気信号にそれぞれ変換する光
検知手段と、強磁性体が施してない１本の光フア
イバに対応する電気信号を基準信号として強磁性
体を施した３本の光フアイバに対応する電気信号
をそれぞれ位相検波する位相検波手段と、上記３
個の位相検波信号を合成する手段とを具備したこ
とを特徴とする光フアイバ磁力計。 means for collimating the output light of a single mode semiconductor laser modulated at a predetermined frequency; Four optical fibers and predetermined straight portions of three of the four optical fibers are fixed as the X-axis, Y-axis, and Z-axis, and ferromagnetic material applied to each of the straight portions. , a light detection means for converting the laser beams that have passed through the four optical fibers into electrical signals, and an electric signal corresponding to one optical fiber that is not coated with ferromagnetic material as a reference signal. phase detection means for detecting the phase of electrical signals corresponding to the three optical fibers, and
an optical fiber magnetometer, comprising means for synthesizing two phase detection signals.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7530285U JPS61190874U (en) | 1985-05-21 | 1985-05-21 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7530285U JPS61190874U (en) | 1985-05-21 | 1985-05-21 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61190874U true JPS61190874U (en) | 1986-11-27 |
Family
ID=30616396
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7530285U Pending JPS61190874U (en) | 1985-05-21 | 1985-05-21 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61190874U (en) |
-
1985
- 1985-05-21 JP JP7530285U patent/JPS61190874U/ja active Pending
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