OPTIMIZED COUPLING OF A GAUSSIAN-BEAM INTO AN OPTICAL WAVE-GUIDE WITHA GRATING COUPLER - COMPARISON OF EXPERIMENTAL AND THEORETICAL RESULTS

Authors
PASCAL D OROBTCHOUK R LAYADI A KOSTER A LAVAL S
Citation
D. Pascal et al., OPTIMIZED COUPLING OF A GAUSSIAN-BEAM INTO AN OPTICAL WAVE-GUIDE WITHA GRATING COUPLER - COMPARISON OF EXPERIMENTAL AND THEORETICAL RESULTS, Applied optics, 36(12), 1997, pp. 2443-2447
Citations number
15
Categorie Soggetti
Optics
Journal title
Applied optics → ACNP
ISSN journal
00036935
Volume
36
Issue
12
Year of publication
1997
Pages
2443 - 2447
Database
ISI
SICI code
0003-6935(1997)36:12<2443:OCOAGI>2.0.ZU;2-K
Abstract
The coupling efficiency of grating couplers is derived for a Gaussian incident beam. Its optimum value depends on the beam waist and on the position of a light spot with respect to the coupler edge for given gr ating parameters. The characteristic coupling length has been experime ntally determined for the grating coupler studied. Relative measuremen ts of the coupling efficiency as a function of incident beam character istics are in good agreement with the numerical results. (C) 1997 Opti cal Society of America.