Suppression of sidelobes in the far-field radiation patterns of optical waveguide arrays
- 10 October 1988
- journal article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 53 (15) , 1375-1377
- https://doi.org/10.1063/1.99983
Abstract
Arrays of coherent optical emitters are attractive for high-speed, wide-angle optical beamsteering or deflection, but uniform arrays radiate undesirable sidelobes. It is shown that dramatic suppression of sidelobes can be accomplished by configuring emitters in a nonuniform pattern. A nearly optimum radiation pattern for scanning results from gradually doubling the interelement spacing across a one-dimensional array. As an example, a 100-element waveguide array of minimum interelement spacing 5 μm radiates a 0.08° main lobe (full width at half-maximum) with a 30× suppression of sidelobe intensity.Keywords
This publication has 4 references indexed in Scilit:
- Local beam deflector interated in a diode laser cavityElectronics Letters, 1987
- Electronic beam deflection in a semiconductor laser diode using grating output couplerElectronics Letters, 1986
- Performance criteria and limitations of electrooptic waveguide array deflectorsApplied Optics, 1979
- Electro-optic multichannel waveguide deflectorElectronics Letters, 1977