1.55 /spl mu/m transmission through planar photonic-crystal straight guides and ultrashort bends on InP substrate

Summary form only given. Highly efficient waveguiding by a 2D photonic crystal at 1.55 /spl mu/m has been demonstrated for straight guides and bends. Our experiments concern structures etched through a 500 nm thick GaInAsP confining layer lying on InP substrate. This approach has the potential to allow integration with active devices. For ultra-compact photonic integrated circuits (PIC), ultrashort bends are a prerequisite. We investigate the spectral behaviour around 1.55 /spl mu/m of channel guides formed by removing 2 or 3 rows in a triangular 2D photonic crystal with a period a = 450 nm. Double-60/spl deg/ bends with 1 and 3 holes displaced in each corner have been fabricated and measured.