JPS6475908A - Optical fiber gyroscope - Google Patents
Optical fiber gyroscopeInfo
- Publication number
- JPS6475908A JPS6475908A JP23265787A JP23265787A JPS6475908A JP S6475908 A JPS6475908 A JP S6475908A JP 23265787 A JP23265787 A JP 23265787A JP 23265787 A JP23265787 A JP 23265787A JP S6475908 A JPS6475908 A JP S6475908A
- Authority
- JP
- Japan
- Prior art keywords
- light
- optical fiber
- resonator
- waves
- fiber
- 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
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C19/00—Gyroscopes; Turn-sensitive devices using vibrating masses; Turn-sensitive devices without moving masses; Measuring angular rate using gyroscopic effects
- G01C19/58—Turn-sensitive devices without moving masses
- G01C19/64—Gyrometers using the Sagnac effect, i.e. rotation-induced shifts between counter-rotating electromagnetic beams
- G01C19/72—Gyrometers using the Sagnac effect, i.e. rotation-induced shifts between counter-rotating electromagnetic beams with counter-rotating light beams in a passive ring, e.g. fibre laser gyrometers
- G01C19/727—Gyrometers using the Sagnac effect, i.e. rotation-induced shifts between counter-rotating electromagnetic beams with counter-rotating light beams in a passive ring, e.g. fibre laser gyrometers using a passive ring resonator
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Optics & Photonics (AREA)
- Electromagnetism (AREA)
- Power Engineering (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Gyroscopes (AREA)
Abstract
PURPOSE:To prevent interference of signal light with scattered light and to obtain a highly sensitive optical fiber gyroscope at low drift, by linking a light delaying optical fiber to an optical fiber, which is coupled with an optical fiber ring resonator, and providing propagation delay time difference between two light waves in the clockwise and counterclockwise directions. CONSTITUTION:Light emitted from a laser light source 1 is split into two light beams through half mirrors 3a-3c. The light beams are received in two input ends of an optical fiber 9a, which is coupled into an optical fiber ring resonator R. A light delaying optical fiber 9c is connected to one incident end of the optical fiber 9a. The resonator R is operated so that propagation delay time difference is provided between two light waves in the clockwise and counterclockwise directions. Thus, the two light waves are not present in the resonator R at the same time. In this way, the interference of the signal light with the reflected light at the end surface of the fiber 9a and with the scattered light yielded in the fiber 9 is prevented. Thus the highly sensitive rotation detecting operation is performed at low drift.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23265787A JPS6475908A (en) | 1987-09-18 | 1987-09-18 | Optical fiber gyroscope |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23265787A JPS6475908A (en) | 1987-09-18 | 1987-09-18 | Optical fiber gyroscope |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6475908A true JPS6475908A (en) | 1989-03-22 |
Family
ID=16942740
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP23265787A Pending JPS6475908A (en) | 1987-09-18 | 1987-09-18 | Optical fiber gyroscope |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6475908A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015034827A (en) * | 2007-11-15 | 2015-02-19 | ザ ボード オブ トラスティーズ オブ ザ レランド スタンフォード ジュニア ユニバーシティー | Low-noise fiber optic sensor utilizing laser source |
-
1987
- 1987-09-18 JP JP23265787A patent/JPS6475908A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015034827A (en) * | 2007-11-15 | 2015-02-19 | ザ ボード オブ トラスティーズ オブ ザ レランド スタンフォード ジュニア ユニバーシティー | Low-noise fiber optic sensor utilizing laser source |
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