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We demonstrate operation of an interferometric optical gyroscope that uses an on-chip 3m ultra-low-loss silicon nitride waveguide coil. The measured minimum waveguide loss of the waveguide coil fabricated using lithographic die stitching was 0.78 dB/m. The angle random walk and bias instability of the gyroscope were characterized to be 8.52 deg/hr1/2 and 58.7 deg/hr respectively.
We demonstrate that direct frequency modulation with a pseudo random bit sequence (PRBS) improves the angle random walk (ARW) and bias instability (BIS) for a laser-driven fiber optical gyroscope over a continuous wave (CW) laser driven gyroscope. The PRBS modulation is shown to improve the ARW to 0.076 deg/hr1/2 and BIS to 2.298 deg/hr compared to an ARW of 0.172 deg/hr1/2 and BIS of 5.862 deg/hr...
We discuss the design, fabrication, and measurement of a large area stitched gyroscopic coil, reporting waveguide loss, including 100 stitches over 3 m, of 0.78 dB/m and crossing loss of 0.0156 dB/crossing for a predicted ARW of 69° /hr/$\surd $ Hz.
We report the performance of a high-speed frequency modulated laser based interferometric optical gyroscope. The motivation lies in the advantages of a laser based system enabled on advanced integrated optics. We demonstrate that this approach improves both angular random walk and bias stability.
We report on the design and fabrication of a large-area waveguide delay-line fabricated using four masks stitched together for gyroscope applications. Waveguide loss, including 100 stitches over 3 meters, is measured to be 0.78dB/m with crossing losses of 0.0156dB/crossing yielding predicted ARW of 31.3°/hr/VHz.
We demonstrate record high temperature operation, 400 °C, of an integrated Al2O3:Er3+ DBR laser on an ultra-low-loss Si3N4 waveguide platform. Additionally, the device exhibits an uncompensated temperature dependent wavelength shift of 1.92 GHz/°C and maintains over 1.5 mW of output power throughout the entire temperature range.
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