Based on a photonic-crystal slab structure, a 60° photonic-crystal waveguide bend is successfully fabricated. Its bending efficiency within the photonic bandgap is measured, and near 100% efficiency is observed at certain frequencies near the valence band edge. The bending radius is ~1μm at a wavelength of λ~1.55μm . The measured η spectrum also agrees well with a finite-difference time-domain simulation.
© 2001 Optical Society of America
(250.3140) Optoelectronics : Integrated optoelectronic circuits
Edmond Chow, S. Y. Lin, J. R. Wendt, S. G. Johnson, and J. D. Joannopoulos, "Quantitative analysis of bending efficiency in photonic-crystal waveguide bends at λ = 1.55 μm wavelengths," Opt. Lett. 26, 286-288 (2001)