Abstract

It is demonstrated theoretically and experimentally that the inversion symmetry of the diffraction pattern of a binary grating at normal incidence can be efficiently broken by the use of nonsymmetric profiles with wavelength-scale transverse features. Theoretically, binary gratings with two grooves (of unequal widths but with the same depth) within the period can deflect as much as ~80% of normally incident radiation into the minus first diffraction order when the deflection angle is 45°.

© 1995 Optical Society of America

V-groove gratings on silicon for infrared beam splitting

N. Rajkumar and J. N. McMullin
Appl. Opt. 34(14) 2556-2559 (1995)

High-efficiency binary fan-out gratings by modulation of a high-frequency carrier grating

P. Blair, M. R. Taghizadeh, W. Parkes, and C. D. W. Wilkinson
Appl. Opt. 34(14) 2406-2413 (1995)

Effects of process errors on the diffraction characteristics of binary dielectric gratings

Drew A. Pommet, Eric B. Grann, and M. G. Moharam
Appl. Opt. 34(14) 2430-2435 (1995)

Binary gratings as beam splitters with asymmetric signals

Ralf Bräuer and Olof Bryngdahl
Opt. Lett. 20(7) 666-668 (1995)

Design and fabrication of binary slanted surface-relief gratings for a planar optical interconnection

J. Michael Miller, Nicole de Beaucoudrey, Pierre Chavel, Jari Turunen, and Edmond Cambril
Appl. Opt. 36(23) 5717-5727 (1997)