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23 May 2023 Equivalent phase noise analysis in broadband source sensing system using a 3×3 coupler
Huicong Li, Wenzhu Huang, Wentao Zhang
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Proceedings Volume 12643, European Workshop on Optical Fibre Sensors (EWOFS 2023); 126430S (2023) https://doi.org/10.1117/12.2679485
Event: European Workshop on Optical Fibre Sensors (EWOFS 2023), 2023, Mons, Belgium
Abstract
The noise conversion relationships of relative intensity noise (RIN) and shot noise in a broadband source sensing system using a 3×3 coupler are studied. RIN and shot noise are converted into the phase noise floor through the arctangent demodulation scheme and the performances of the 3×3 coupler. To quantify the contribution of RIN and shot noise, we analyzed the equivalent phase noise induced by RIN and shot noise. The theory and experiment demonstrate that the equivalent phase noise of RIN is related to the correlation of three RINs and the initial phase, and the shot noise is related to the initial phase.
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Huicong Li, Wenzhu Huang, and Wentao Zhang "Equivalent phase noise analysis in broadband source sensing system using a 3×3 coupler", Proc. SPIE 12643, European Workshop on Optical Fibre Sensors (EWOFS 2023), 126430S (23 May 2023); https://doi.org/10.1117/12.2679485
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KEYWORDS
Relative intensity noise
Sensing systems
Signal detection
Fiber optics sensors
Demodulation
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