Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
(A) The transmission spectra of the nanoring-strip (strip length L = 180 nm, nanoring width W1 = 30 nm, and strip width W2 = 30 nm). (B) and (C) The electric field distribution of nanoring-strip structure in shorter wavelength (mode A) and longer wavelength (mode B), respectively. (D) Calculated effective refractive indices of different the ng and the sensing medium refractive index nmed.
