A bidirectional light-borne microwave resonant system based on a circulator structure and a method for detecting angular velocity
What is Al technical title?
Al technical title is built by PatSnap Al team. It summarizes the technical point description of the patent document.
A microwave resonance, bidirectional light technology, applied in instruments, measuring devices, surveying and navigation, etc., can solve the problems that the characteristics of the optical resonator cannot be completely identical, reduce the accuracy of the light-borne microwave gyroscope, etc., to eliminate temperature drift and practicality. Strong, high measurement accuracy
Active Publication Date: 2020-11-27
ZHEJIANG UNIV
View PDF9 Cites 0 Cited by
Summary
Abstract
Description
Claims
Application Information
AI Technical Summary
This helps you quickly interpret patents by identifying the three key elements:
Problems solved by technology
Method used
Benefits of technology
Problems solved by technology
To realize the detection of the Sagnac effect, it is first necessary to realize the clockwise (CW) and counterclockwise (CCW) transmission of the same light source. Due to the limitation of the bidirectional transmission capability of optoelectronic devices, the (CCW) optical resonator characteristics cannot be exactly the same, so the introduction of non-reciprocity error will reduce the accuracy of optical microwave gyroscope
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more
Image
Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
Click on the blue label to locate the original text in one second.
Reading with bidirectional positioning of images and text.
Smart Image
Examples
Experimental program
Comparison scheme
Effect test
Embodiment 1
[0034] Such as figure 1 As shown, the present embodiment provides a bidirectional light-carrying microwave resonant system based on a circulator structure, which includes a broadband light source, a 50:50 coupler, a first wavelength division multiplexer 3, a second wavelength division multiplexer device 4, low-speed photoelectric converter 5, interferometer controller 6, cavity length compensation regulator 7, first optical amplifier 9, first photoelectric intensity modulator 10, first optical circulator 11, first optical coupler 12, Narrowband bidirectional optical filter 13, second optical coupler 16, second optical amplifier 17, second photoelectric intensity modulator 18, second optical circulator 19, first regenerative cavity cavity length regulator 20, first high-speed photodetector 21, the first microwave filtering and amplifying unit 22, the first microwave power divider 24, the second regenerative cavity cavity length regulator 25, the second high-speed photodetector ...
Embodiment 2
[0056] Such as figure 2 As shown, a bidirectional optical-carrying microwave resonance system based on a circulator structure provided in this embodiment, on the basis of Embodiment 1, also includes a cavity length control system, and the cavity length control system includes a cavity length adjuster, a cavity Long control unit 30 and external clock reference source 45 .
[0057] The cavity length regulator is arranged in the bidirectional ring resonant cavity, the first microwave power divider 24 is input to the cavity length control unit 30, the external clock reference source 45 is input to the cavity length control unit 30, and the cavity length control unit 30 connect the cavity length adjuster to realize the stable cavity length of the resonant cavity.
[0058] Further, the chamber length regulator includes a first-stage chamber length regulator 14 and a second-stage chamber length regulator 15, and the adjustment range of the first-stage chamber length regulator 14 is...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more
PUM
Login to view more
Abstract
The invention discloses a resonant system for a bidirectional light carrying microwave based on a circulator structure and a method for detecting an angular velocity thereof. According to the resonantsystem for the bidirectional light carrying microwave based on the circulator structure and the method for detecting the angular velocity thereof, a high-stability light carrying microwave of which polarization states in a forward and reverse direction are perpendicular is generated in an optical fiber ring by utilizing a regenerative mold locking technology, a cavity length control technology and a polarization state separation technology, and the light carrying microwave is used for measuring the rotation angular velocity. The circulator structure is adopted and the resonance of the bidirectional light carrying microwave is realized through a bidirectional regeneration mode locking technology. A reciprocal resonant system for the bidirectional light carrying microwave is achieved basedon a non-reciprocal error elimination technology of a wide-spectrum optical interferometer. The polarization state separation technology is adopted to achieve dual-wavelength separation of optical signals and the vertical polarization state is adopted for opposite transmission in a sensitive ring, so that the detection capability of the sensitive ring is improved. The cavity length control technology is adopted to lock the oscillation frequency of the microwave in one direction to a high-stability standard-time reference source, so that a relative cavity length of the optical resonant cavity is stabilized. The system and the method have the characteristics of high practicability, high measurement precision and the like.
Description
technical field [0001] The invention belongs to the technical field of high-precision optical gyroscopes, and in particular relates to a bidirectional optical-carrying microwave resonant system based on a circulator structure and a method for detecting angular velocity thereof. Background technique [0002] In the field of inertial navigation, the accelerometer is usually used to detect the translational velocity of the carrier, and the gyroscope is used to detect the angular velocity of the carrier. High-precision gyroscopes mainly include mechanical gyroscopes and optical gyroscopes, which are widely used in military, industrial, scientific and other fields. Among them, optical gyroscopes mainly include laser gyroscopes and fiber optic gyroscopes. Although the laser gyroscope has high precision, it has a latch-up effect and high maintenance costs; the interferometric fiber optic gyroscope has defects such as low optical power utilization, temperature error, and parasitic ...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more
Application Information
Patent Timeline
Application Date:The date an application was filed.
Publication Date:The date a patent or application was officially published.
First Publication Date:The earliest publication date of a patent with the same application number.
Issue Date:Publication date of the patent grant document.
PCT Entry Date:The Entry date of PCT National Phase.
Estimated Expiry Date:The statutory expiry date of a patent right according to the Patent Law, and it is the longest term of protection that the patent right can achieve without the termination of the patent right due to other reasons(Term extension factor has been taken into account ).
Invalid Date:Actual expiry date is based on effective date or publication date of legal transaction data of invalid patent.
Login to view more 
Login to view more