#Circuit from 
#Robi Boeck, Nicolas A. Jaeger, Nicolas Rouger, and Lukas Chrostowski, 
#"Series-coupled silicon racetrack resonators and the Vernier effect: theory and measurement"
#Opt. Express 18, 25151-25157 (2010) 

l11 = l1 / 2; 	
l12 = l1 / 2; 	
l21 = l2 / 2;
l22 = l2 / 2;

switchtodesign;

setnamed("ONA1","fwhm excursion",1);

setnamed("C1","coupling coefficient 1", k1 );

setnamed("L11","frequency",f0);
setnamed("L11","length",l11);
setnamed("L11","group index 1",ng);
setnamed("L11","effective index 1",neff);
setnamed("L11","loss 1",loss);

setnamed("L12","frequency",f0);
setnamed("L12","length",l12);
setnamed("L12","group index 1",ng);
setnamed("L12","effective index 1",neff);
setnamed("L12","loss 1",loss);

setnamed("C2","coupling coefficient 1", k2 );

setnamed("L21","frequency",f0);
setnamed("L21","length",l21);
setnamed("L21","group index 1",ng);
setnamed("L21","effective index 1",neff);
setnamed("L21","loss 1",loss);

setnamed("L22","frequency",f0);
setnamed("L22","length",l22);
setnamed("L22","group index 1",ng);
setnamed("L22","effective index 1",neff);
setnamed("L22","loss 1",loss);

setnamed("C3","coupling coefficient 1", k3 );