Tsai, TY., Fang, YC., Lee, ZC. et al. Opt Quant Electron (2007) 39: 571. doi:10.1007/s11082-007-9108-2
An accurate design for an apodized integrated optical wavelength filter using Gaussian-distributed sidewall Bragg grating is proposed, 2-dimensionally simulated and analyzed using the finite-difference time-domain method. It is verified that for various grating periods, the central wavelengths of the reflection bands are all fixed at designed 1.55 μm with the side lobes well suppressed.
Apodized Bragg gratingFinite difference time domain (FDTD)Photonic band gap (PBG)