Abstract

Experimental results on the square meander or grating-assisted codirectional coupler have been published recently. The device was employed as a passive wavelength sensitive multiplexer / demultiplexer and as part of a tunable laser [1,2]. Theoretical analyses were based on a coupled mode method [1,3], but no method to calculate the coupling efficiency from a first principles approach, including the case of strong coupling, has been published so far to the best of our knowledge.

© 1992 Optical Society of America