The design of birefringent photonic crystal fiber sensor based on the surface plasmon resonance model is proposed in this paper. This sensor utilizes circular air holes to introduce birefringence into the structure. The effect of geometric parameters on the performance of the sensor has been analysed with the operation wavelength between 600 nm and 800 nm. The sensor is designed to detect refractive index of the analyte between 1.33 and 1.35, which offers average sensitivity of about 4880 nm/RIU and 3940 nm/RIU for HEx11 and HEy11 modes, respectively. Moreover, the proposed sensor has a strong potential for multi-channel/multi-analyte sensing with much higher sensitivity.
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