An efficient method for the design of optical devices based on codirectional grating-assisted mode coupling is presented. A low-complexity algorithm is developed to calculate the coupling function of a grating that accurately matches an arbitrarily given target spectral response. The method relies on the synthesis of the grating impulse response by means of an exact differential layer-peeling algorithm.
© 2000 Optical Society of America
Ricardo Feced and Michalis N. Zervas, "Efficient inverse scattering algorithm for the design of grating-assisted codirectional mode couplers," J. Opt. Soc. Am. A 17, 1573-1582 (2000)