Multiple-element photonic microwave true-time-delay beamforming incorporating a tunable chirped fiber Bragg grating with symmetrical bending technique

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 f...

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Bibliographic Details
Published in:Optics letters 2007-06, Vol.32 (12), p.1704-1706
Main Authors: HAN, Young-Geun, JU HAN LEE
Format: Article
Language:English
Subjects:
Applied sciences
Circuit properties
Electric, optical and optoelectronic circuits
Electronics
Exact sciences and technology
Fundamental areas of phenomenology (including applications)
Gratings
Integrated optics. Optical fibers and wave guides
Optical and optoelectronic circuits
Optical elements, devices, and systems
Optics
Physics
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Summary: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 230 ps.
ISSN:0146-9592
1539-4794
DOI:10.1364/OL.32.001704