Abstract
We experimentally demonstrate a novel scheme for a multiple-element photonic microwave true-time-delay device with high tunability based on a tunable chirped fiber Bragg grating without center wavelength shift. We achieve the different true time delay by controlling the grating period of a chirped fiber Bragg grating based on the symmetrical bending technique as a multiwavelength signal source is applied to carry microwave signals. The proposed method does not require the complex structure of systems, wavelength tuning, and synchronization of optical devices such as tunable bandpass filters and optical input signals. We achieve the tunabilty of the time delay for a microwave signal carried over an optical signal in a range from 1 to .
© 2007 Optical Society of America
Full Article | PDF ArticleMore Like This
Young-Geun Han, Xinyong Dong, Ju Han Lee, and Sang Bae Lee
Opt. Lett. 31(24) 3571-3573 (2006)
Young-Geun Han, Francesco Fresi, Luca Poti, Ju Han Lee, and Xinyong Dong
Opt. Lett. 32(9) 1032-1034 (2007)
Young-Geun Han, Xinyong Dong, Chang-Seok Kim, Myung Yung Jeong, and Ju Han Lee
Opt. Express 15(6) 2921-2926 (2007)