Broad-band Mach-Zehnder interferometers as high performance refractive index sensors: Theory and monolithic implementation

K. Misiakos, I. Raptis, A. Salapatas, E. Makarona, A. Botsialas, M. Hoekman, R. Stoffer, G. Jobst, Opt. Express (2014) 22, 8856-8870.