Title :
Near-field enhancement characteristics of resonant periodic waveguides
Author :
Ding, Y. ; Magnusson, R.
Author_Institution :
Dept. of Electr. & Comput. Eng., Connecticut Univ., Storrs, CT, USA
Abstract :
In this paper, the near-field properties of weakly modulated resonant waveguide gratings are treated. Numerical results obtained with rigorous-coupled wave analysis (RCWA) and with the finite-difference time domain method (FDTD) yield quantitative information on relative field strengths and spatial extents associated with the near fields. The results show that the near-field strength can be greatly enhanced and that it is inversely proportional to the modulation strength up to ∼0.36 in the case under study.
Keywords :
coupled mode analysis; diffraction gratings; finite difference time-domain analysis; optical modulation; optical waveguide theory; FDTD; finite-difference time domain method; modulation strength; near-field enhancement characteristics; near-field property; quantitative information; relative field strength; rigorous-coupled wave analysis; weakly modulated resonant waveguide grating; Amplitude modulation; Dielectric constant; Electromagnetic diffraction; Electromagnetic waveguides; Gratings; Lattices; Nonlinear optics; Optical waveguides; Resonance; Time domain analysis;
Conference_Titel :
Lasers and Electro-Optics Society, 2003. LEOS 2003. The 16th Annual Meeting of the IEEE
Print_ISBN :
0-7803-7888-1
DOI :
10.1109/LEOS.2003.1253130
