Abstract
We present results on the control of waveguided light around λ = 1 μm by twodimensional photonic bandgap (PBG) triangular lattices. The lattice consists of 0.8-μm-deep cylindrical holes etched through the waveguide with an air filling factor in the 25- 30% range. To test PBG lattices [Fig. 1(a)], we use the guided photoluminescence (PL) of InxGa1---xAs quantum wells embedded in a 0.24-μm-thick GaAs monomode waveguide with an Al0 9Ga0.1As clad.1 By using various geometries, one can probe the transmission [Fig. 1(b)], reflection [Fig. 1(c)] and diffraction [Fig. 1(d)] coefficients of the microstructures across a wavelength range of ~20 nm determined by the guided photoluminescence spectral width.1,2
© 1998 Optical Society of America
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