E. Chow et al., Quantitative analysis of bending efficiency in photonic-crystal waveguide bends at lambda=1.55 mu m wavelengths, OPTICS LETT, 26(5), 2001, pp. 286-288
Based on a photonic-crystal slab structure, a 60 degrees photonic-crystal w
aveguide bend is successfully fabricated. Its bending efficiency within the
photonic bandgap is measured, and near 100% efficiency is observed at cert
ain frequencies near the valence band edge. The bending radius is similar t
o1 mum at a wavelength of lambda similar to 1.55 mum. The measured eta spec
trum also agrees well with a finite-difference time-domain simulation. (C)
2001 Optical Society of America.