Journal article
A broad-band waveguide grating coupler with a subwavelength grating mirror
Abstract
A new diffractive device for light coupling between a planar optical waveguide and free space is proposed. The device utilizes a second-order waveguide grating to diffract the fundamental waveguide mode into two free propagating beams and a subwavelength grating (SWG) mirror to combine the two free propagating beams into a single beam. The finite-difference time-domain (FDTD) simulations show that the SWG mirror improves the coupling efficiency …
Authors
Cheben P; Janz S; Xu D-X; Lamontagne B; Delage A; Tanev S
Journal
IEEE Photonics Technology Letters, Vol. 18, No. 1, pp. 13–15
Publisher
Institute of Electrical and Electronics Engineers (IEEE)
Publication Date
January 1, 2006
DOI
10.1109/lpt.2005.860037
ISSN
1041-1135