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We propose a novel dual cladding modes fiber up-taper interferometer-based surface-mounted acoustic sensor. It consists of two optimized fiber fusion up-tapers along a single-mode fiber that enable it to excite dual cladding modes, which leads to its interference pattern with an extinction ratio of more than 20 dB, guaranteeing it to be used as an intensity-modulated fiber acoustic sensor (FAS) with...
Based on dual-order stimulated-Raman-scattering of single pump laser, hybrid Raman/EDFA is realized by introducing erbium doped fiber (EDF) within the span. Gain and noise performance can be improved by optimizing the position of EDF.
We experimentally evaluate the performance of Fabry-Perot laser diodes (FPLDs) injection locked by spectrum sliced ASE noise for WDM-PON. Results show that the performance of the injection locked FPLDs is significantly improved by optimizing their front-facet reflectivity, operation temperature and bias current.
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