Surface plasma excimer slow-ray gyroscope and method for producing the same

A technology of surface plasmon and optical gyroscope, applied in the direction of Sagnac effect gyroscope, optical waveguide light guide, etc., can solve the problems of low precision and large volume, achieve high sensitivity characteristics, increase gyroscope sensitivity, and reduce gyroscope size Effect

Active Publication Date: 2008-10-29
SOUTHEAST UNIV
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Problems solved by technology

[0006] Technical problem: The purpose of the present invention is to propose a surface plasmon waveguide to realize an optical gyroscope and its preparation method, to realize a high-precision optical gyroscope

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  • Surface plasma excimer slow-ray gyroscope and method for producing the same
  • Surface plasma excimer slow-ray gyroscope and method for producing the same
  • Surface plasma excimer slow-ray gyroscope and method for producing the same

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Embodiment Construction

[0033] The technical solution of the present invention is achieved in this way. From the structural point of view, traditional fiber optic gyroscopes can be divided into interference type and resonance type fiber optic gyroscopes. Its core part is composed of an open-loop or closed-loop optical fiber loop, which is used to transmit light wave signals. The key technical index of the gyroscope - the ultimate sensitivity is determined by the transmission spectrum, optical wavelength, phase velocity and other parameters of the optical fiber loop to the optical signal. Similarly, the surface plasmon slow-light gyroscope, whose transmission waveguide is composed of a mixture of micron-structured metal and dielectric materials, and the transmission signal is an SPPs wave whose phase velocity is much smaller than the light wave signal of the same frequency, can also use the same detection method as the fiber optic gyroscope. The principle is to detect clockwise and counterclockwise SPP...

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Abstract

A surface plasmon slow-light gyroscope and the preparation method thereof are provided. The surface plasmon waveguide transmission signal is adopted so as to realize the high sensitivity of the slow-light gyroscope. The surface plasmon slow-light gyroscope includes an interference type and a resonance type surface plasmon waveguide optic gyroscopes, wherein the interference type waveguide structure gyroscope is composed of an open-ring waveguide and the resonance type waveguide structure gyroscope is composed of a closed-ring waveguide. The surface plasmon slow-light gyroscope is characterized in that light-wave signal is replaced by the surface plasmon wave and optical waveguide loop is replaced by the surface plasmon waveguide loop with a structure of metallic nanometer defect, nano-particle, nano-wire, nano-film or nano-lattice. The preparation process is described as follows: a. the open-ring metallic nano-wire is introduced to the interference type surface plasmon slow-light gyroscope, so as to form the surface plasmon waveguide structure, and further form the signal channel in the optical gyroscope; and b. the closed-ring metallic nano-wire is introduced to the resonance type surface plasmon slow-light gyroscope, so as to form the surface plasmon waveguide structure and further form the signal channel in the optical gyroscope.

Description

technical field [0001] The invention proposes a realization scheme of an optical gyroscope with a waveguide structure, and in particular relates to realizing a high-precision optical gyroscope by using surface plasmon polaritons and their slow-light characteristics. Background technique [0002] The optical gyroscope is a new type of photoelectric gyroscope based on the Sagnac effect. The Sagnac effect is a general correlation effect of the propagating light in the closed-loop optical path that rotates relative to the inertial space. After going through the same optical path and traveling in opposite directions, they return to the beam splitting point in the same phase. If there is a rotational angular velocity relative to the inertial space around the axis perpendicular to the plane where the optical path is located, the optical paths traveled by the light beams propagating in the forward and reverse directions are different, resulting in an optical path difference. Theore...

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Application Information

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IPC IPC(8): G01C19/64G02B6/10
Inventor 张彤张晓阳
Owner SOUTHEAST UNIV
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