Phase shift upon resonant coupling into a thin corrugated optical waveguide.
The coupling of light into a waveguide by a surface grating leads to the attenuation of the transmitted beam when the resonant modes of the waveguide are excited. These can be tuned by changing the incident angle or the wavelength. Upon excitation of a mode, the transmitted beam experiences a significant phase shift that can be measured and compared with that predicted by the Kramers-Kronig relations.
Stockermans
Raymond
R
Department of Physics, Royal Military College of Canada, Kingston, Ontario, K7K 7B4 Canada.
Ivanov
Mario
M
Rochon
Paul
P