KEYWORDS: Fiber optic gyroscopes, Signal detection, Signal processing, Design, Optical circuits, Gyroscopes, Field programmable gate arrays, Digital signal processing, Miniaturization, Sensors
The signal processing circuit of the fiber optic gyroscope adopts a digital closed-loop processing scheme. It modulates the Y-waveguide integrated optical device through a D/A converter and its amplification circuit and demodulates the optical signals containing angular rate information via the detector signal processing circuit and A/D converter. The angular rate sensed by the fiber optic gyroscope is then calculated by a digital signal processing logic chip FPGA. Traditional fiber optic gyroscopes predominantly use imported components such as operational amplifiers, FPGAs, and A/D and D/A devices. In response to the urgent demand for gyroscopes with specific sizes and 100% domestic production, and with the gradual maturity of domestic integrated electronic components, the optimized design of the main control signal processing board, component selection, and the comprehensive application of flexible lamination technology have ensured that the accuracy and performance of the fiber optic gyroscope are maintained even with full domestic circuit production and reduced size.
In superluminescent diode (SLD), the height difference between the two shoulders of the kovar bracket (referred to as the shoulder difference) has a significant impact on the rate of change of SLD full temperature power (ΔP). To reduce the rate of change of SLD full temperature power, this paper verifies the influence of four sets of double shoulder differences at different heights on SLD full temperature power, and establishes a quantitative relationship between double shoulder differences and SLD full temperature power stability. The experimental results show that the shoulder difference is less than 10um, the mean Δ P is 1.86%, and the standard deviation is 0.008; the shoulder deviation is between 10um and 20um, with a mean Δ P of 2.88% and a standard deviation of 0.014. The shoulder deviation is between 20um and 40um, with a mean Δ P of 3.87% and a standard deviation of 0.016; the shoulder difference is greater than 40um, with a mean Δ P of 5.9% and a standard deviation of 0.040.
Access to the requested content is limited to institutions that have purchased or subscribe to SPIE eBooks.
You are receiving this notice because your organization may not have SPIE eBooks access.*
*Shibboleth/Open Athens users─please
sign in
to access your institution's subscriptions.
To obtain this item, you may purchase the complete book in print or electronic format on
SPIE.org.
INSTITUTIONAL Select your institution to access the SPIE Digital Library.
PERSONAL Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.