Title :
Active integrated photonic true time delay device
Author :
Tong, Jian ; Wade, J.K. ; MacFarlane, Duncan L. ; Shi, Hanxing ; McWilliams, Scott ; Evans, Gary A. ; Christensen, Marc P.
Author_Institution :
Erik Jonsson Sch. of Eng. & Comput. Sci., Texas Univ., Richardson, TX
Abstract :
A photonic true time delay cell with two waveguide couplers and five semiconductor optical amplifiers is demonstrated. The five semiconductor optical amplifiers provide gain in the 1550-nm region and port selection to determine the time delay. With the amplifiers off the signal are blocked with extinction ratios of more than 10 dB. In the experiments reported here, the delay of 20 ns was provided by an optical fiber. Because of the potential for nanosecond switching times, the device has application in very agile phased array antenna applications, in optical switching and routing, and in optical filtering
Keywords :
antenna phased arrays; delays; integrated optics; optical couplers; optical filters; optical switches; optical waveguides; semiconductor optical amplifiers; telecommunication network routing; 1550 nm; 20 ns; extinction ratio; integrated optics; optical filtering; optical switching; phased array antenna; photonic true time delay device; routing; semiconductor optical amplifiers; waveguide couplers; Couplers; Delay effects; Optical amplifiers; Optical arrays; Optical devices; Optical filters; Optical waveguides; Phased arrays; Semiconductor optical amplifiers; Semiconductor waveguides; Multiple quantum-well; semiconductor optical amplifier; true time delay; waveguide splitter;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2006.879943
