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Annular resonant cavity and resonant fiber-optic gyroscope

A ring resonant cavity and fiber optic gyroscope technology, which is applied to Sagnac effect gyroscopes, gyroscopes/steering sensing equipment, instruments, etc., can solve problems such as small signal-to-noise ratio, many couplers, and high cost The noise ratio is large and the effect of improving the detection accuracy

Active Publication Date: 2015-12-16
SHENZHEN UNIV
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  • Application Information

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Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a ring resonator, which aims to solve the problems of the existing ring resonator with relatively small signal-to-noise ratio or the need for many couplers and high cost

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  • Annular resonant cavity and resonant fiber-optic gyroscope
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  • Annular resonant cavity and resonant fiber-optic gyroscope

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Embodiment Construction

[0021] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0022] As shown in FIG. 3( a ), the structure diagram of the ring resonator is shown in the dotted box. A ring resonant cavity, comprising a first optical splitting device C1, a second optical splitting device C2 and two bundles of optical fibers OF, the two ends of the first optical splitting device C1 correspond to the two ends of the second optical splitting device C2 respectively through two bundles of optical fibers OF connected to form a closed loop.

[0023] Specifically, the first and second optical splitting devices C1 and C2 may be couplers, beam splitters or circulators. Of course, any...

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Abstract

The invention belongs to the technical fields of optical sensing and signal detection and provides an annular resonant cavity and a resonant fiber-optic gyroscope. The annular resonant cavity comprises two optical fiber beams, a first light splitter and a second light splitter, wherein the two ends of the first light splitter are connected with the two ends of the second light splitter in a one-to-one correspondence mode through the two optical fiber beams respectively so as to form a closed circuit. According to the annular resonant cavity, by means of the closed circuit defined by the two light splitters and the optical fiber beams, when optical signals output from the annular resonant cavity are converted into electric signals through a photoelectric detector, an output resonance curve is a dark peak with a light background, signal to noise ratio is large, and gyroscope detection precision can be improved.

Description

technical field [0001] The invention belongs to the technical field of optical sensing and signal detection, and in particular relates to a ring resonant cavity and a resonant fiber optic gyroscope. Background technique [0002] Resonant fiber optic gyro is a new type of inertial sensor that detects the rotational angular velocity of an object based on the resonance frequency difference generated by the optical Sagnac effect. It is one of the most critical devices in inertial navigation and attitude control systems. The resonant fiber optic gyroscope can also measure the angular velocity of the object relative to the inertial space without any external reference system. It can be widely used in various fields such as aerospace, weapon equipment, and civil industry. play an important role in. The ring resonant cavity in the resonant fiber optic gyro is the most critical angular velocity sensitive device in the whole system. The ring resonant cavity measures the rotational an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01C19/72
CPCG01C19/727
Inventor 刘承香李景振吴旭李明吴栋阮双琛
Owner SHENZHEN UNIV