High-Efficiency Nanoplasmonic Wavelength Filters Based on MIM Waveguides

A Reconfigurable and Ultra-Compact Plasmonic Filter based on MIM Waveguides at Optical Channels

“…Figure 2 (b) shows the transmission spectra of the short-wavelength cut-off filter for different values of the stubs' lengths. The cut-off wavelength is where the transmission is equal to 1% [4], which is found to be 1612 nm for g=80 nm, which clearly exhibits that the transmission is close to zero for a wide range of wavelengths. It is realized that by increasing the stubs' length, the cut-off wavelength is shifted towards longer wavelength.…”

“…On the other hand, size, efficiency, and potentially, the ability to provide several functions in a single structure are of great interest in the evolution of next generation of PICs. Thus, based on our previous studies [4,5], we have proposed a reconfigurable and highly compact and efficient wavelength filter based on MIM waveguides, operating at technologically important telecom wavelengths. Numerical results reveal that by tuning the geometrical parameters, the proposed device can operate as a flat-top bandpass filter, a dualband bandpass filter, as well as a short-wavelength cut-off filter, while maintaining a high level of efficiency.…”

A Multipurpose and Highly-Compact Plasmonic Filter Based on Metal-Insulator-Metal Waveguides

“…The response indicates the performance of a typical long-wavelength cutoff filter. The cutoff wavelength, defined as the wavelength where the transmission is equal to 1% [28], is found to be 1268.3 nm. Moreover, the modulation of the transmission spectrum is easily achieved by adjusting the length of the stubs.…”

A Highly-Efficient and Compact Surface Plasmon Polaritons-based Long-Wavelength Cut-off Filter at Telecom Wavelengths

“…Figure 1 (b) exhibits the transmittance and reflectance of the cut-off filter for W=20 nm, which indicates the width of the waveguide,  =100 nm specifies the distance between the input port of the waveguide and the stepped-impedance resonators (SIR), which is also the distance between the two SIRs, S=90 nm, d=50 nm, and h=30 nm, respectively, represent the length, width and the height of the stepped impedance resonator. The cut-off wavelength is defined as the wavelength where the transmission is equal to 1% [7], which is 1279.3 nm in the proposed structure. Figure 2 illustrates the transmission spectra of the plasmonic cut-off wavelength filter for various lengths,  , the distance between two SIRs, while all other parameters are kept the same as in Fig.…”