A novel (to our knowledge) scheme of an optical router/switch element, composed of a tapered side-coupled integrated spaced sequence of optical resonators, is proposed. It is based on a modified design of the ring sequence in which the resonance conditions are set by the single ring resonance and by the coherent feedback of the sequence of rings. This double condition yields robustness against fabrication defects, dense routing capability, and high switching efficiency.
© 2011 Optical Society of America
Original Manuscript: January 4, 2011
Revised Manuscript: March 1, 2011
Manuscript Accepted: March 16, 2011
Published: April 15, 2011
P. Bettotti, M. Mancinelli, R. Guider, M. Masi, M. Rao Vanacharla, and L. Pavesi, "Robust design of an optical router based on a tapered side-coupled integrated spaced sequence of optical resonators," Opt. Lett. 36, 1473-1475 (2011)