研究目的
To investigate the concept of the Sagnac effect in passive integrated optical gyroscope based on photonic crystal ring resonator for angular velocity sensing.
研究成果
The proposed passive phase-sensitive integrated optical gyroscope based on photonic crystal ring resonator demonstrates high transmission efficiency and quality factor, making it suitable for angular velocity sensing. The design allows for compact size and potential integration with optical and electronic components. Future work could focus on experimental validation and optimization for specific applications.
研究不足
The study is based on simulations using the FDTD method, and practical implementation may face challenges related to fabrication precision and environmental stability. The sensitivity and accuracy of the gyroscope may be affected by non-reciprocal effects and temperature variations.
1：Experimental Design and Method Selection:
The study utilizes the Sagnac effect in a passive integrated optical gyroscope configuration with a photonic crystal ring resonator. The design includes one 3 dB coupler, two Bus waveguides, and five ring resonators. The two-dimensional finite-difference time-domain (FDTD) method is used for simulation.
2：Sample Selection and Data Sources:
The structure is designed using dielectric silicon rods embedded in air, with specific parameters such as lattice constant and refractive index optimized for the first TM photonic band gap.
3：List of Experimental Equipment and Materials:
The primary materials include silicon rods and air as the embedding medium. The design parameters include the radius of rods, lattice constant, and refractive index.
4：Experimental Procedures and Operational Workflow:
Light is launched into the input waveguide, split into two beams by a 3 dB power splitter, and then coupled into the ring resonators. The phase shift due to rotation is measured by monitoring the output power from the ports.
5：Data Analysis Methods:
The output power and phase shift are analyzed to estimate the rotation rate. The quality factor, bandwidth, and transmission efficiency are key parameters evaluated.
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