Nanoscale effects on multichannel add/drop filter based on 2-D photonic crystal ring-resonator heterostructure

Authors

• Hamed Pezeshki ¹
• Vahid Ahmadi ²

1. Department. of Electrical Engineering, Science and Research Branch, Islamic Azad University, Tehran, Iran
2. Department of Electrical and Computer Engineering, Tarbiat Modares University, Tehran, Iran

Abstract

AbstractIn this paper, we propose a heterostructure multichannel add/drop filter based on 2-D photonic crystal ring-resonator in which, add and drop operations are accomplished by coupling between two W1 waveguides. The wavelength spacing of 10.3 nm, as well as the average cross-talk of −37.5 dB, are the other features of the proposed filter. Furthermore, nanoscale effects on the filter’s performance including wavelength spacing, cross-talk amount, and dynamic response are considered. By taking into account these effects, the minimum wavelength spacing of 12 nm is obtained, whereas the filter’s cross-talk has an average of −40 dB. Simulations are performed using 2-D finite-difference time-domain calculations.

Keywords

• Ring
• Photonic crystal
• PACS
• 42.70.Qs
• 42.79.Ci
• 42.79.Sz
• 42.82.Et
• Heterostructure
• Multichannel add/drop filter
• Nanoscale effect
• Resonator