Design and fabrication of copper-filled photonic crystal fiber based polarization filters

Abstract

This work demonstrates a broadband polarization filter based on copper-filled photonic crystal fiber (CFPCF). The proposed fiber is fabricated using the conventional stack-and-draw method. The polarization filter properties of the proposed CFPCF are investigated numerically by considering the cross-sectional scanning electron microscopy image of the fabricated CFPCF. It is observed that the magnitude of cross talk reached up to −206 dB over 0.8 mm length with a broad bandwidth of 282 nm at a central wavelength of 1790 nm. In addition, the polarization characteristics of the CFPCF including cross talk, central wavelength, and bandwidth can be adjusted by varying the diameter of the copper wire. It is shown that the resonance wavelength of the proposed filter can be tuned over the wide range of wavelengths from 1390 to 1890 nm. We have shown that by adjusting the copper wire diameter to 0.32Λ and 0.48Λ μm (Λ is pitch size), the proposed filter can operate at communication bands of 1310 and 1550 nm, respectively. The results suggest high-potential of the proposed fiber for polarization filtering and other sensing applications.

Broadband Plasmonic Polarization Filter Based on Photonic Crystal Fiber with Dual-Ring Gold Layer

“…The reaction mixture was maintained at a suitable temperature, then precise control of the rate of metal deposition to achieve the designed deposit thickness, later, the residue must be removed. Recently, Azman et al chose a different approach for fabricating a broadband copper-filled PCF based polarization filter [45]. In their design, the smaller diameter copper rod was placed into a capillary to make a copper cane, then other capillaries and copper cane were stacked in desired structure for the perform.…”

A Review of Plasmonic Photonic Crystal Fiber

“…There are many methods available to comprehend this structure, i.e., choosing a particular way to fill a metal wire into a conventional dielectric DC-PCF, such as pressureassisted pumping, or using femtosecond laser micromachining [77]. Sellmeier equation [78] and silver by the Drude model [79]. The simulation has been solved using the FemSIM software to find the complex propagation constants of the waveguide modes with the finiteelement method.…”

High Performance Surface Plasmon Resonance Based Photonic Crystal Fiber Sensor with Four Open Surface Rings

“…Due to the demand and need for optical sensors, especially for medical applications as well as the implementation of sensors within the integrated equations, downsizing and increasing the sensitivity of sensors in small dimensions has become very important [1][2]. One of the sensing mechanisms in the identification of chemicals and biomolecules as well as liquids is refractive index based sensor, wavelength based sensor or wavelength based sensor or amplitude based sensor [2]. In this regard, such optical fiber sensors will be designed and manufactured by methods such as Bragg interferometry and grating to monitor water pollution, detect chemicals, and so on [3][4].…”