Resonant photonic crystal waveguide gyroscope and application thereof

Abstract

The invention discloses a resonant photonic crystal waveguide gyroscope and application thereof. The resonant photonic crystal waveguide gyroscope consists of a two-dimensional photonic crystal waveguide, a light source, a photoelectric detector A and a photoelectric detector B, wherein the two-dimensional photonic crystal waveguide forms a resonant chamber which comprises a coupling door formed by a single dielectric cylinder, a dielectric cylinder inner wall, and a light path formed by removing the dielectric cylinder; a light beam emitted by the light source enters into the light path after passing through the coupling door and is resonantly transmitted in clockwise and anticlockwise paths. Output light exits from the coupling door and is received by the photoelectric detector A and the photoelectric detector B. When the light path is static, the resonant frequencies detected by the photoelectric detector A and the photoelectric detector B are same; when the light source has a rotary angular speed, the rotary angular speed can be calculated by virtue of a resonant frequency difference value of the photoelectric detector A and the photoelectric detector B. The gyroscope disclosed by the invention has the characteristics of no polarizing crosstalk, low environmental sensitivity, compact structure and the like, is a brand new implementation model of the resonant optical gyroscope, and is a novel resonant optical gyroscope.

Description

technical field [0001] The invention provides a resonant photonic crystal waveguide gyroscope, which relates to the photonic crystal waveguide, optical gyroscope instrument, especially the field of resonant optical gyroscope. Background technique [0002] The interferometric fiber optic gyroscope is an all-solid-state gyroscope with the characteristics of high reliability, long life, large dynamic range, insensitivity to vibration, small size, light weight, suitable for mass production, and can achieve high precision. However, in the face of engineering applications, fiber optic gyroscopes still have shortcomings such as excessive environmental sensitivity, especially when there are external temperature changes, the performance indicators of fiber optic gyroscopes often drop by an order of magnitude. By optimizing the structure and improving the winding method of the optical fiber ring, as well as improving the signal detection scheme and adopting external shielding componen...

AI Technical Summary

Problems solved by technology

However, in the current resonant fiber optic gyro, there has been a lack of suitable solutions, because the resonator itself is composed of solid-core optical fibers, the Kerr effect, polarization coupling influence and temperature sensitivity are too large, and the light source uses a narrow linewidth Laser light source, will make these problems more serious

Images