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Application of window theory to optimization of fiber Bragg gratings for wavelength‐selectable antenna beam steering
Author(s) -
Petrov Alex V.,
Yin Shizhuo,
Yu Francis T. S.
Publication year - 1998
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/(sici)1098-2760(19980220)17:3<161::aid-mop3>3.0.co;2-h
Subject(s) - optics , fiber bragg grating , beam steering , true time delay , phased array , bandwidth (computing) , wavelength , materials science , prism , physics , antenna (radio) , engineering , beam (structure) , telecommunications
The profile of fiber Bragg gratings (FBGs) utilized in fiber grating prism and other wavelength‐selective phased‐array beamformers can be optimized using the results of window theory. In this paper, the window formalism is adopted to quantify the relationship between the FBG profile and its spectral selectivity. It is shown how application of optimum and suboptimum windows affects the reflectivity, bandwidth, and sidelobe level of FBG. Also, the impact of taper on the group‐delay nonuniformity, an essential issue for true time delay processors, is discussed. © 1998 John Wiley & Sons, Inc. Microwave Opt Technol Lett 17: 161–164, 1998.