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- W2161633752 abstract "This paper considers the issue of noise reduction associated with optical feedback self-mixing interferometries (OFSMI). The objective is to develop an effective pre-processing filtering solution that can eliminated the inherent noise disturbances. The characteristics of OFSMI signals are described in some detail and two filter solutions are proposed. The latter includes a non-linear median filter and a Kaiser based FIR filter. The performance of the two types of filters are investigated. It is shown that median filters are capable of removing sparkle-like noise while Kaiser based FIR filters are effective in reducing the high frequency noise as well as the slow time-varying signal envelop fluctuation. Interestingly our results show that the best performance is achieved by combining the two filters, that is, a median filter followed by a Kaiser-based FIR filter. In other words, the estimation accuracy of OFSMI parameters such as the line-width enhancement factor (LEF) of semiconductor lasers is significantly improved with the aid of the proposed pre-processing solution." @default.
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- W2161633752 date "2007-01-01" @default.
- W2161633752 modified "2023-10-15" @default.
- W2161633752 title "Improving the Performance in an Optical feedback Self-mixing Interferometry System using Digital Signal Pre-processing" @default.
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- W2161633752 doi "https://doi.org/10.1109/wisp.2007.4447495" @default.
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