[EN] We demonstrate experimentally an indexvariable optical true time delay (OTTDL) based on an array of
forty subwavelength grating (SWG) waveguides on silicon-oninsulator (SOI). Using the measured data and numerical
simulations, ...
[EN] An optical true time delay line (OTTDL) is a fundamental building block for signal processing applications in microwave photonics and optical communications. Here, we experimentally demonstrate an index-variable OTTDL ...