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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...
An electrical method for characterizing optical filters is proposed and demonstrated based on low-frequency detection, which enables magnitude frequency response measurement with hyperfine resolution up to 50 kHz and doubled measuring frequency range in the electrical domain.
A self-calibrated method based on the frequency-shifted heterodyne scheme is proposed and demonstrated for independent frequency response measurement of high-speed Mach-Zehnder modulators (MZMs), phase modulators (PMs) and photodetectors (PDs) with the same setup.
The modulation characteristics of high-performance In0.1Ga0.9N/GaN continuous-wave (CW) ridge laser diode were demonstrated. The laser epitaxial structure was grown on (202̄1̄) by metal organic chemical vapor deposition (MOCVD) for high-power CW operation by adopting low-resistance top-side n-type contact design. The threshold current density of 1200 µm long and 3 µm wide cavity was 6.1 kA/cm2 in...
We demonstrate high speed electro-refraction and electro-absorption modulators on the hybrid silicon platform. These modulators use distributed electrodes and have good performance for bit rates up to 40 Gb/s or more.
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