Supersensitive photonic crystal fiber device (PCFD) for the accurate determination of sugar concentration (SC) in an aqueous solution

Presently, photonic crystal fiber devices (PCFDs) have gotten a grand importance in various research arenas as a result of their valuable advantages in different applications. One of the most central applications is their usage as detectors to sense several analytes and this is for the reason that these PCFDs are described by high precision and rapidity in sensing process. In this effort, a PCFD is projected as a detector to determine various SCs in an aqueous solution. COMSOL Multiphysics version 5.6 with the finite element approach (FEA) and perfectly matched sheet (PMS) boundary circumstance is expended to build and examine the suggested PCFD. Zeonex matter is exploited in our PCFD owing to its small absorption loss. Several PCFD configurations are studied at x and y-axis. Most optical factors for the suggested PCFD are analyzed and compared together for each SC at the different PCFD configurations and both polarizations. All these factors are analyzed in the frequency scale from 1.0 to 2.5 THz. The highest relative sensitivity (RSE) values are 99.42% for SC of 30% at y-polarization and optimum + 2% configuration. It is proved that enlarging the dimensions of the core zone compared to the zone of the air holes leads to an improvement in the RSE. Also, this PCFD revealed incredibly tiny values of CLS and EMLS. Moreover, all the other optical factors appeared the adeptness of the suggested PCFD in determining the various SCs in the aqueous solution.