Abstract
A theoretical model of the thermal phase noise in a square-wave modulated solid core photonic crystal fiber-optic gyroscope has been established, and then verified by measurements. The results demonstrate a good agreement between theory and experiment. The contribution of the thermal phase noise to the random walk coefficient of the gyroscope is derived. A fiber coil with 2.8 km length is used in the experimental solid core photonic crystal fiber-optic gyroscope, showing a random walk coefficient of 9.25 × 10−5 .
Highlights
Interferometric fiber-optic gyroscopes (IFOGs) measure the angular rate around a fixed axis based on the Sagnac effect, and have been increasingly used due to their particular properties such as high performance, low power consumption and high reliability as a solid state structure with no moving parts [1]
With the development of inertial guidance and navigation systems, the accuracy of IFOGs is improving by using different signal processing and noise suppression methods, such as square-wave modulation, relative intensity noise (RIN)
During long-term exposure in a space environment, the components of the space used IFOG are generally affected by radiation, leading to the performance degradation of the system
Summary
Interferometric fiber-optic gyroscopes (IFOGs) measure the angular rate around a fixed axis based on the Sagnac effect, and have been increasingly used due to their particular properties such as high performance, low power consumption and high reliability as a solid state structure with no moving parts [1]. Compared with the conventional PMFs, solid core photonic crystal fibers (SC-PCFs) has much lower sensitivity to temperature and radiation in the same conditions [10,11], which shows great prospect in space applications and SC-PCFOGs. As the SC-PCFs are different from conventional PMFs in structure and material, and the thermal phase noise can be the limitation of high-precision SC-PCFOGs, it is necessary to analyze and measure the thermal phase noise in SC-PCFOGs. In this paper, a theoretical model of thermal phase noise in a square-wave modulated SC-PCFOG was derived, and a thermal phase noise measurement setup was built to verify the model. In 2017, this17,paper, a theoretical model of thermal phase noise in a square-wave modulated. Equation (5) represents the single-sided thermal phase noise in the IFOG when a square-wave bias signal is applied, where B is the electrical bandwidth. Where D is the diameter of fiber coil and c is the speed of light
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
