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S. ROBINSON1,* , NAKKEERAN1
The impacts of rod shape and filling fraction are studied for the Two Dimensional (2D) circular Photonic Crystal Ring Resonator (PCRR) based Add Drop Filter (ADF). The ADFs are devised separately using rods of square, circular and hexagonal shape in square lattice PC. For various values of rod’s cross sectional dimension and shape the resonant wavelength, coupling efficiency, dropping efficiency, Q factor and passband width of the designed filters are carried out through simulation. The calculated filling fraction of a square, circular and hexagonal rods in the lattice structure is .04 × 10-12 sq.m, 0.0314 × 10-12 sq.m and 0.0346 × 10-12 sq.m and their respective resonant wavelength is 1523 nm, 1497 nm and 1507 nm. It is observed that there is 1 nm wavelength shift to longer wavelength while increasing the overall filling fraction by 0.1233×10-12 sq.m. Here, the 2D Finite Difference Time Domain (FDTD) method and Plane Wave Expansion (PWE) method are employed for obtaining the normalized transmission and band diagram of the PC structure..
Photonic crystal, Circular ring resonator, Photonic band gap, Add drop filter, FDTD method, PWE method, Square rods, Circular rods, Hexagonal rods.
S. ROBINSON, NAKKEERAN, Performance evaluation of add drop filter by studying rod shape and filling fraction, Optoelectronics and Advanced Materials - Rapid Communications, 5, 9, September 2011, pp.948-955 (2011).
Submitted at: Sept. 22, 2011
Accepted at: Sept. 15, 2011
Optoelectronics and Advanced Materials - Rapid Communications
(2023): 0.5 - 2023 Journal Citation Reports (Clarivate Analytics, 2024)
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