A simple closed-form description of grating-assisted coupling between twin cores is presented. It is exact in the limit of weakly coupled cores and weak grating perturbations.
© 1991 Optical Society of America
Original Manuscript: June 11, 1990
Manuscript Accepted: December 4, 1990
Published: February 15, 1991
Yijiang Chen and Allan W. Snyder, "Grating-assisted couplers," Opt. Lett. 16, 217-219 (1991)