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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 have designed and fabricated the first “integrated optical driver” chip for fiber gyroscopes on Si/III–V heterogeneous integration platform. The chip was successfully interrogated with a fiber coil to realize an open-loop IFOG.
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 propose a simple method based on the spectrum analysis of transmission through an unbalanced Mach-Zehnder interferometer to characterize waveguide propagation loss and 2×2 waveguide coupler's coupling coefficient simultaneously. We show it is possible to determine the propagation loss and the coupling of each coupler.
We propose a simple yet powerful method to characterize waveguide propagation loss and $2\times 2$ waveguide coupler’s coupling coefficient simultaneously. The method, based on the spectrum analysis of transmission through an unbalanced Mach–Zehnder interferometer, requires only a single test structure and is insensitive to variation of input coupling losses. We show that, in most general cases,...
We present recent advances in the development of self-seeded colorless WDM-PON optical links employing modulation averaging. Modulation-averaging, employed as a reflector at the remote node, improves the link margin and allows for a wider range of bias conditions at the transmitter. The modulation-averaging reflector is a passive optical device and therefore the remote nodes in our proposed WDM-PON...
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