𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Topology optimization of coupling between slab and photonic crystal waveguide

✍ Scribed by Koichi Hirayama; Yoshihiro Tabata; Yasuhide Tsuji; Yukinari Hayashi


Publisher
John Wiley and Sons
Year
2008
Tongue
English
Weight
396 KB
Volume
50
Category
Article
ISSN
0895-2477

No coin nor oath required. For personal study only.

✦ Synopsis


Abstract

We employ topology optimization with the finite‐element method to improve the coupling between a slab waveguide and a photonic crystal waveguide. Here, we apply topology optimization in a small design region to realize the improvement of the coupling. Also, we simplify an optimized structure of the coupling region for easier fabrication and try to find core features of the optimized structure. Β© 2008 Wiley Periodicals, Inc. Microwave Opt Technol Lett 50: 3009–3012, 2008; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.23886


πŸ“œ SIMILAR VOLUMES


High-efficiency coupling between externa
✍ Chang, Chun Wen (author);Cheng, Szu Cheng (author);Hsieh, Wen Feng (author) πŸ“‚ Article πŸ“… 2004 πŸ› Elsevier Science 🌐 English βš– 789 KB

Longitudinally shifting waveguide junctions can achieve high efficiency light coupling from external silica waveguides into photonic crystal waveguides (PCWs) without requiring taper PCW structures in the waveguide junctions. Due to the periodic field distribution of PCWs along the propagation direc

Optical coupling between a cavity mode a
✍ Ken’ichi Nagahara; Masato Morifuji; Masahiko Kondow πŸ“‚ Article πŸ“… 2011 πŸ› Elsevier Science 🌐 English βš– 634 KB

We theoretically investigate optical coupling between a waveguide and a localized mode arising in a cavity resonator of a two-dimensional photonic crystal. By carrying out two-dimensional finite-difference time-domain calculations, we evaluate coupling efficiency by observing whispering gallery mode

Efficient coupling of light into and out
✍ Esteban Moreno; L. MartΓ­n-Moreno; F.J. GarcΓ­a-Vidal πŸ“‚ Article πŸ“… 2004 πŸ› Elsevier Science 🌐 English βš– 274 KB

In this paper, we show how the coupling of light into a photonic crystal waveguide can be greatly enhanced by creating a periodic modulation in the dielectric structure surrounding the entrance of the waveguide. In this way, surface modes supported by the system can funnel the light that impinges on

Time-domain 2D modeling of slab-waveguid
✍ Min Qiu; Bozena Jaskorzynska; Marcin Swillo; Henri Benisty πŸ“‚ Article πŸ“… 2002 πŸ› John Wiley and Sons 🌐 English βš– 208 KB

## Abstract Devices based on two‐dimensional (2D) photonic crystals (PCs) are typically realized as 3D structures consisting of an array of holes (or rods) vertically etched through a slab waveguide. The existence of holes in a slab waveguide may induce strong radiation losses to the slab claddings