D. Perron, P.-T. Ho and V. Van, “Resonant power coupling in asynchronous microring-assisted directional couplers”, IEEE Journal of Quantum Electronics, Dec. 2010 (web)

D. Perron, P.-T. Ho and V. Van, “Microring-assisted directional couplers for power coupling between dissimilar waveguides,” Integrated Photonics Research, Silicon and Nano Photonics Conference (IPR), Monterey, July 2010 (web)