@article { wang2014OL, title = {Precise control of the coupling coefficient through destructive interference in silicon waveguide Bragg gratings}, journal = {Optics Letters}, volume = {39}, year = {2014}, month = {10/2014}, pages = {5519-5522}, abstract = {We present waveguide Bragg gratings with misaligned sidewall corrugations on a silicon-on-insulator platform. The grating strength can be tuned by varying the misalignment between the corrugations on the two sidewalls. This approach allows for a wide range of grating coupling coefficients to be achieved with precise control, and substantially reduces the effects of quantization error due to the finite mask grid size. The experimental results are in very good agreement with simulations using the finite-difference time-domain (FDTD) method.}, URL = {http://www.opticsinfobase.org/ol/abstract.cfm?uri=ol-39-19-5519}, author = {Xu Wang and Yun Wang and Jonas Flueckiger and Richard Bojko and Amy Liu and Adam Reid and James Pond and Nicolas A. F. Jaeger and Lukas Chrostowski} }