Low-loss GaAs/AlGaAs waveguide corners for compact optical delay lines

Full vectorial finite element modal solution of curved optical waveguides

“…In particular, optical waveguide bends are widely used in arrayed waveguide filters [1] and optical delay lines [2], besides their conventional use as an "interconnector" between different devices within the photonic subsystem. However, to improve their functionality and reliability, these curved waveguides should have a small radius of curvature in order to maximise the packaging density within the photonic subsystem.…”

“…Curved optical waveguides are very important components in building modern photonic integrated circuits (PICs) as they can be used as a flexible means of changing the light direction in different kinds of photonic devices and subsystems. In particular, optical waveguide bends are widely used in arrayed waveguide filters [1] and optical delay lines [2], besides their conventional use as an "interconnector" between different devices within the photonic subsystem. However, to improve their functionality and reliability, these curved waveguides should have a small radius of curvature in order to maximise the packaging density within the photonic subsystem.…”