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Optical coupling between monocrystalline colloidal crystals and a planar waveguide
 

Summary: Optical coupling between monocrystalline colloidal crystals
and a planar waveguide
Y. Zhao,a)
I. Avrutsky, and B. Li
Department of Electrical and Computer Engineering, Wayne State University, Detroit, Michigan 48202
Received 26 May 1999; accepted for publication 13 October 1999
We have experimentally demonstrated an optical material structure consisting of monocrystalline
colloidal crystals and a planar waveguide. We have performed experimental studies of light
coupling into the waveguide structure via colloidal gratings, as well as the multiplexing capability
of the structure. Effective index obtained from measured parameters agrees well with theoretical
calculations. Effect of crystal nonuniformity on diffraction line shape and width, as well as possible
applications are discussed. 1999 American Institute of Physics. S0003-6951 99 01849-5
Photonic crystals are one type of interesting optical ma-
terial structures under development.1,2
Recently, there is an
intensive effort to study self-assembly of colloidal particles
with a motivation to fabricate photonic crystals with lattice
spacings of the order of optical wavelengths. This started
with self-assembly colloidal suspensions to form three-
dimensional photonic crystals.3,4

  

Source: Avrutsky, Ivan - Department of Electrical and Computer Engineering, Wayne State University

 

Collections: Engineering