Physics – Optics
Scientific paper
2011-02-02
JOSA B, Vol. 28, Issue 4, pp. 689-696 (2011)
Physics
Optics
Scientific paper
10.1364/JOSAB.28.000689
Design and reconstruction of 2d and 3d photonic structures are usually carried out by forward simulations combined with optimization or intuition. Reconstruction by means of layer-stripping has been applied in seismic processing as well as in design and characterization of 1d photonic structures such as fiber Bragg gratings. Layer-stripping is based on causality, where the earliest scattered light is used to recover the structure layer-by-layer. Our set-up is a 2d layered nonmagnetic structure probed by plane polarized harmonic waves entering normal to the layers. It is assumed that the dielectric permittivity in each layer only varies orthogonal to the polarization. Based on obtained reflectance data covering a suitable frequency interval, time-localized pulse data are synthesized and applied to reconstruct the refractive index profile in the leftmost layer by identifying the local, time-domain Fresnel reflection at each point. Once the first layer is known, its impact on the reflectance data is stripped off, and the procedure repeated for the next layer. Through numerical simulations it will be demonstrated that it is possible to reconstruct structures consisting of several layers. The impact of evanescent modes and limited bandwidth is discussed.
Hatlo Andresen Marte P.
Krogstad Harald E.
Skaar Johannes
No associations
LandOfFree
Inverse scattering of 2d photonic structures by layer-stripping does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Inverse scattering of 2d photonic structures by layer-stripping, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Inverse scattering of 2d photonic structures by layer-stripping will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-81426