2016
DOI: 10.1364/ol.41.005664
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Pseudo-random-bit-sequence phase modulation for reduced errors in a fiber optic gyroscope

Abstract: Low noise and drift in a laser-driven fiber optic gyroscope (FOG) are demonstrated by interrogating the sensor with a low-coherence laser. The laser coherence was reduced by broadening its optical spectrum using an external electro-optic phase modulator driven by either a sinusoidal or a pseudo-random bit sequence (PRBS) waveform. The noise reduction measured in a FOG driven by a modulated laser agrees with the calculations based on the broadened laser spectrum. Using PRBS modulation, the linewidth of a laser … Show more

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Cited by 19 publications
(9 citation statements)
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“…However, the solution is incompatible with our on-chip scheme. Besides, the coherent backscattering errors and reflection errors of the mode MUX induced by laser source 26 are existing in the integrated optical gyroscope. The reflections of on-chip mode MUX should be characterized here.…”
Section: Resultsmentioning
confidence: 99%
“…However, the solution is incompatible with our on-chip scheme. Besides, the coherent backscattering errors and reflection errors of the mode MUX induced by laser source 26 are existing in the integrated optical gyroscope. The reflections of on-chip mode MUX should be characterized here.…”
Section: Resultsmentioning
confidence: 99%
“…В работе [45] РЧ-сигнал используется в неклассическом применении, продемонстрирован один из способов уширения спектра лазерного излучения посредством фазовой модуляции оптического сигнала. Необходимо отметить, что ГБШ позволяет добиться лучших результатов по сравнению с работой [46], где в качестве РЧ-сигнала использовалась псевдослучайная двоичная последовательность (случайные отклонения угловой скорости 7,3 × 10 -4°/ √ч, дрейф 0,023°/ч).…”
Section: спектральные радиофотонные волоконно-оптические измерительныunclassified
“…In recent years, research groups represented by Stanford University have been devoted to using laser as the light source of the IFOG since its frequency drift is usually within 1 ppm [10,11]. In contrast, the wavelength stability of the broadband light source is tens of ppm.…”
Section: Introductionmentioning
confidence: 99%