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The resonant fiber-optic gyroscope (RFOG) based on the Sagnac effect is a high-accuracy rotation sensor. The intermodulation error due to the laser noise at even harmonics of the modulation frequency deteriorates the performance of the RFOG. Aiming at the suppression of high-frequency laser noise, a phase-modulated feedback loop is developed and analyzed. The parameters of the servo loop is optimized...
A cooperative system for visible light positioning (VLP) and visible light communication (VLC) is proposed based on the spread-spectrum plugin of optical identification (OPID). By keeping the existing VLC frame structure untouched, two different implementation schemes were designed by adding the location information field into the communication information field for VLP applications. It is deemed...
A novel optical pulse generator with high-rate and low-jitter is proposed based on the optoelectronic oscillator using a cascaded polarization modulator and phase modulator. Optical pulses with 10 GHz repetition rate and 29 ps width are demonstrated. According to the single-sideband phase noise of the generated microwave signal, 169 fs time jitter of the generated pulses in the 100 Hz to 1 MHz frequency...
We present a method to produce continuous, fast and truly-linear frequency-sweep optical signal driven by arbitrary waveform generator. By using this signal as the optical source, a high-repetition-rate optical frequency domain reflectometry is experimentally demonstrated with linear response to outside perturbation. This work has significant value for achieving high performance distributed acoustic...
The absolute distance measurement system based on phase shift and synthetic wavelength is developed. The repetition frequency of 250 MHz and corresponding forth harmonic frequency of a mode-locked erbium-doped fiber laser are used in measurement. The synthetic wavelength in introduced to enlarge the measuring ambiguity range of the system. Moreover, the repetition frequency is modulated by an acoustic...
Elastic optical network (EON) has been receiving extensive attention due to its inherent flexibility and the efficiency with which it allocates fiber bandwidth. Depending on the physical impairment, the distance adaptive modulation scheme can be adopted to ensure the transmission quality. However, distance adaptive modulation scheme will occupy more spectrum resources for the long-distance path. A...
A converged communication system with 100 Gbps based on photonic RF wave is proposed. In the system, the mechanism of the photonic RF wave with 40 GHz is demonstrated. With the comprehensive applications of advanced modulation technologies and excellent algorithms, the wireless access rate of the downstream can reach up to 100 Gbps. Due to the photoelectric direct detection, the whole system becomes...
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