TY - JOUR
T1 - Channel drop filters with folded directional couplers in two-dimensional photonic crystals
AU - Wang, Chun Chih
AU - Chen, Lien Wen
N1 - Funding Information:
This work was partially supported by the National Science Council of Taiwan, R.O.C under Grant NSC96-2221-E-006-212-MY3 and is gratefully acknowledged.
PY - 2010/2/15
Y1 - 2010/2/15
N2 - In this paper, we proposed a three-port channel drop filter (CDF) with a folded directional coupler (FDC) in a two dimensional photonic crystal. The filter consists of two major parts, one is a resonator formed by a cavity defect to catch the desired signal from the bus waveguide, and the other one composed of two line defects close to form a directional coupler is to work as an frequency-dependent mirror for enhancement of the drop efficiency. The frequency response of the CDF has been derived by the couple-mode theory and the highly efficient drop conditions have been discussed. Numerical simulations obtained by the finite-difference time-domain method confirmed the feasibility of the CDF.
AB - In this paper, we proposed a three-port channel drop filter (CDF) with a folded directional coupler (FDC) in a two dimensional photonic crystal. The filter consists of two major parts, one is a resonator formed by a cavity defect to catch the desired signal from the bus waveguide, and the other one composed of two line defects close to form a directional coupler is to work as an frequency-dependent mirror for enhancement of the drop efficiency. The frequency response of the CDF has been derived by the couple-mode theory and the highly efficient drop conditions have been discussed. Numerical simulations obtained by the finite-difference time-domain method confirmed the feasibility of the CDF.
UR - https://www.scopus.com/pages/publications/73749083636
UR - https://www.scopus.com/pages/publications/73749083636#tab=citedBy
U2 - 10.1016/j.physb.2009.11.044
DO - 10.1016/j.physb.2009.11.044
M3 - Article
AN - SCOPUS:73749083636
SN - 0921-4526
VL - 405
SP - 1210
EP - 1215
JO - Physica B: Condensed Matter
JF - Physica B: Condensed Matter
IS - 4
ER -