Temperature characteristics of silicon core optical fiber Fabry-Perot interferometer.

Silicon core optical fiber expanded silicon photonics to specialty fiber platform. Although great challenges still exist for the fiber fabrication, the presence of semiconductor material has already given optical fiber new features and enormous possibilities for fiber-based devices and sensors. In this Letter, an all fiber silicon cavity Fabry-Perot interferometer was made by splicing silicon core silica cladding fiber with conventional single-mode silica fiber. The cavity shows high temperature sensitivity around 82 pm/°C due to the larger thermo-optical coefficient of silicon material compared with that of silica material.

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