Performance Estimation of Defected
Ternary Photonic Crystal-Based
Bandpass Filter Beyond 100 THz
for All-Optical Circuit
Arpan Deyasi and Angsuman Sarkar
Abstract Characterization of photonic crystal-based defected bandpass filter is
analytically computed beyond 100 THz region to get the potential advantage of
minimum attenuation window. One-dimensional structure is considered for simulation, which gives the advantage of fabrication simplicity, and Butterworth filter is
designed centered at 1550 nm taking into account of both normal and polarized incidences of electromagnetic wave. Structural parameters and incidence angles (within
permissible limit) are varied to analyze the modulation of filter performance. Point
defect within the 5% level is considered at the surface which will not degraded
the mechanical properties of the structure, but can enrich the filter performance in
terms of reduction of ripple in passband, and making blueshift or redshift of passband as per the requirement of specific applications. Simulation is carried out for
SiO 2 /air/TiO 2 structure using transfer matrix technique (TMT), and transmittance is
evaluated as a function of incidence wavelength in the desired region. Computational
findings reveal that response in terms of bandwidth tailoring and noise rejection is
better for p-polarized (TM) wave incidence than s-polarized (TE) wave. Optimum
lateral dimension is envisaged for different successive layers, which are such that
slightly higher than the computed magnitude basically eliminates the effect of middle
slab, i.e., the ternary layer will equivalent to binary PhC. Results are imperative for
Butterworth filter design when signal and noise bands are intimately sequenced.
Keywords Bandpass filter · Defected PhC · Ternary structure · Polarized
incidence · Optical bandwidth · Ripple factor · Noise rejection · Structural
parameters
A. Deyasi (B)
Department of Electronics and Communication Engineering, RCC Institute of Information
Technology, Kolkata 700015, India
e-mail: deyasi_arpan@yahoo.co.in
A. Sarkar
Department of Electronics and Communication Engineering, Kalyani Govt Engineering College,
Nadia 741235, India
© The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2021
A. Biswas et al. (eds.), Emerging Trends in Terahertz Engineering and System
Technologies, https://doi.org/10.1007/978-981-15-9766-4_3
31
Ternary Photonic Crystal-Based
Bandpass Filter Beyond 100 THz
for All-Optical Circuit
Arpan Deyasi and Angsuman Sarkar
Abstract Characterization of photonic crystal-based defected bandpass filter is
analytically computed beyond 100 THz region to get the potential advantage of
minimum attenuation window. One-dimensional structure is considered for simulation, which gives the advantage of fabrication simplicity, and Butterworth filter is
designed centered at 1550 nm taking into account of both normal and polarized incidences of electromagnetic wave. Structural parameters and incidence angles (within
permissible limit) are varied to analyze the modulation of filter performance. Point
defect within the 5% level is considered at the surface which will not degraded
the mechanical properties of the structure, but can enrich the filter performance in
terms of reduction of ripple in passband, and making blueshift or redshift of passband as per the requirement of specific applications. Simulation is carried out for
SiO 2 /air/TiO 2 structure using transfer matrix technique (TMT), and transmittance is
evaluated as a function of incidence wavelength in the desired region. Computational
findings reveal that response in terms of bandwidth tailoring and noise rejection is
better for p-polarized (TM) wave incidence than s-polarized (TE) wave. Optimum
lateral dimension is envisaged for different successive layers, which are such that
slightly higher than the computed magnitude basically eliminates the effect of middle
slab, i.e., the ternary layer will equivalent to binary PhC. Results are imperative for
Butterworth filter design when signal and noise bands are intimately sequenced.
Keywords Bandpass filter · Defected PhC · Ternary structure · Polarized
incidence · Optical bandwidth · Ripple factor · Noise rejection · Structural
parameters
A. Deyasi (B)
Department of Electronics and Communication Engineering, RCC Institute of Information
Technology, Kolkata 700015, India
e-mail: deyasi_arpan@yahoo.co.in
A. Sarkar
Department of Electronics and Communication Engineering, Kalyani Govt Engineering College,
Nadia 741235, India
© The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2021
A. Biswas et al. (eds.), Emerging Trends in Terahertz Engineering and System
Technologies, https://doi.org/10.1007/978-981-15-9766-4_3
31