Title :
Nonrecursive tunable photonic filter using wavelength-selective true time delay
Author :
Coppinger, F. ; Yegnanarayanan, S. ; Trinh, P.D. ; Jalali, B. ; Newberg, I.L.
Author_Institution :
Dept. of Electr. Eng., California Univ., Los Angeles, CA, USA
Abstract :
We present a photonic feed-forward radio-frequency filter with all-optical tunability. The filter incorporates a novel wavelength-selective true time delay in a delay-line-canceler architecture. We demonstrate tuning of the filter null frequency by changing the wavelength of the optical carrier. Application of this technique in optically controlled radars is discussed.
Keywords :
delays; demultiplexing equipment; diffraction gratings; optical waveguide filters; optical waveguides; radar signal processing; radiofrequency filters; tuning; wavelength division multiplexing; all-optical tunability; arrayed waveguide grating demultiplexer; filter null frequency tuning; nonrecursive tunable photonic filter; optical carrier wavelength; optically controlled radars; photonic feed-forward radio-frequency filter; wavelength-selective true time delay; Arrayed waveguide gratings; Delay effects; Delay lines; Optical distortion; Optical feedback; Optical fiber filters; Optical filters; Optical signal processing; Stimulated emission; Tunable circuits and devices;
Journal_Title :
Photonics Technology Letters, IEEE
