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A dual cavity optical channel drop filter based on two dimensional photonic crystals



  1. Faculty of Engineering, Shahid Chamran University of Ahvaz, Ahvaz, Iran


In this paper, based on completely circular two dimensional photonic crystals, a channel drop filter is proposed which benefits from applying feedback in its structure. Filtering is achieved by creating a L4 cavity and imposing two defects in the cavity. Feeding back is done by using an arc type cavity. As a result, wavelength selectivity of output port is improved. Dropping the desired wavelength is furthermore studied by changing three parameters (i.e. radius of basic structure rods, radius of defect rods and refractive index of structure). Near 100% power transmission efficiency made the proposed structure suitable for all optical communication applications..


Channel drop filter, Photonic crystals, Feedback, Cavity.

Submitted at: Sept. 14, 2015
Accepted at: Oct. 28, 2015


R. TALEBZADEH, M. SOROOSH, A dual cavity optical channel drop filter based on two dimensional photonic crystals, Journal of Optoelectronics and Advanced Materials Vol. 17, Iss. 11-12, pp. 1593-1596 (2015)