We propose a novel surface plasmon resonance sensor design based on a grapefruit photonic crystal fiber. In such a
sensor, phase matching between plasmon and a core mode is achieved by introducing microstructure into the fiber core.
Using the finite element method, the confinement loss of the fiber is calculated to measure the sensitivity of the sensor.
Simulation results show that this kind of sensor has an excellent effect, with the amplitude resolution to be as low as
2.88×10-5 RIU and the spectral resolution to be 6.67 ×10-5 RIU.
We propose a novel surface plasmon resonance sensor design based on a grapefruit photonic crystal fiber. In such a
sensor, phase matching between plasmon and a core mode is achieved by introducing microstructure into the fiber core.
Using the finite element method, the confinement loss of the fiber is calculated to measure the sensitivity of the sensor.
Simulation results show that this kind of sensor has an excellent effect, with the amplitude resolution to be as low as
2.88×10−5 RIU and the spectral resolution to be 6.67 ×10−5 RIU.
In this paper, we report on the near-field distribution of multi-core photonic crystal fiber lasers. The supermodes of
photonic crystal fibers with foursquarely and circularly distributed multi-cores are observed. The supermode properties
are investigated by using full-vector finite-element method (FEM). The mode operations of our 16-core foursquare-array
and 18-core circular-array photonic crystal fiber lasers are simulated by the COMSOL Multiphysics software. The
near-field distribution patterns of in-phase supermode are presented.
Optical fiber sensors (OFS) play an important role in modern intellectualized sensing system. A novel optical fiber sensor based on single mode fiber laser is proposed in this paper. The basic elements of the novel fiber laser sensor (FLS) is based in the fact that the output power of fiber laser is influenced by the loss which caused by the absorption loss of analyte in evanescent field of the fiber. The action of the fiber laser sensor is theoretical investigated using two-level system rate equations. The function which contacted the output power of the fiber laser and the absorption loss of analyte is build upon the complex refraction index of the analyte and the loss of the resonant cavity of the fiber laser though evanescent field. The relative sensitivity of the fiber laser sensor is given finally.
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