title: Achromatic compensation for integrated optic grating couplers with focused beams.
abstract: Results of a theoretical and experimental investigation into the variation of coupling efficiency with incident light wavelength are presented for various beam focusing conditions for an integrated optical grating coupler. These results indicate that wavelength compensation for grating coupling efficiencies can be achieved over several nanometers with focused beams. We also show the correlation between width of coupling angle and width of coupling wavelength.
authors.forename: M C
authors.initials: MC
authors.lastname: Gupta
authors.forename: L
authors.initials: L
authors.lastname: Li