Very Compact Metal Slab Waveguide Reflectors as Integrated High Reflectivity Mirrors on High Index Contrast Waveguides

Autor:	Chang Wan Son, JaeHyuk Shin, Byungchae Kim, Nadir Dagli
Rok vydání:	2011
Předmět:	Materials science business.industry Nanowire Finite-difference time-domain method Nanophotonics Reflector (antenna) Waveguide (optics) Atomic and Molecular Physics and Optics Resonator Optics Reflection (physics) Optoelectronics business Refractive index
Zdroj:	Journal of Lightwave Technology. 29:2999-3003
ISSN:	1558-2213 0733-8724
Popis:	Metal slab waveguide reflectors integrated with very compact high index contrast waveguides are described, designed and simulated. Reflection and transmission characteristics of such reflectors are studied using 2-D and 3-D finite different time domain (FDTD) simulations. It is shown that the reflection and transmission coefficients can be controlled by adjusting the gap and length of metals of the reflector. Reflection coefficients much higher than cleaved facets and even higher than metal coated facets are possible. Reflection coefficients of almost 97% are achievable using only 1 μm long reflectors. The sensitivity of obtained reflection as a function of alignment errors indicates that more than 90% reflectivity is possible with 0.1 μm alignment tolerance. It is also shown that very compact Fabry-Perot resonators with FSR of 67.1 nm are possible using such reflectors. These resonators are directly coupled to input and output waveguides and have 5 μ m active length and less than 7 μm overall length including mirrors.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::d6c65e49c0241b90f6029c7a417646d3 https://doi.org/10.1109/jlt.2011.2163619 Zobrazit plný text záznamu