ELECTRONICS LETTERS, vol. 45, no. 22, page. 1121 - 1122, 2009-10-22
JOURNAL OF LIGHTWAVE TECHNOLOGY, vol. 26, no. 13-16, page. 2521 - 2530, 2008-07
APPLIED PHYSICS LETTERS, vol. 93, no. 24, page. 241113, 2008-12-15