US 7,590,318 B2
	Optoelectronic component comprising a diffraction grating with a transverse structure
Alain Accard, Marcoussis (France); Olivier Drisse, Itteville (France); Béatrice Dagens, Antony (France); and Hélène Sillard, Le Chesnay (France)
Assigned to Alcatel Lucent, (France); and Thales, (France)
Filed on Dec. 21, 2007, as Appl. No. 11/963,674.
Claims priority of application No. 06 55910 (FR), filed on Dec. 22, 2006.
Prior Publication US 2008/0193084 A1, Aug. 14, 2008
Int. Cl. G02B 6/34 (2006.01)

U.S. Cl. 385—37  [385/15; 385/31]

11 Claims

1. An optoelectronic device comprising: a buried waveguide in the form of an elongate stripe and grating layer in the form of an elongate stripe having features, each feature having an approximately rectangular shape, the length of the features being substantially perpendicular to the length direction of the grating layer, said layer being placed so as to provide optical coupling with an optical wave propagating in the waveguide, wherein the length of certain features is substantially less than the width of the waveguide, the grating layer comprising at least two rows of features, the axes of said rows being parallel to the central axis of the grating layer.