Optical Coupling Structures of Fiber-Optic Mach-Zehnder Interferometers Using CO₂ Laser Irradiation

Table 4

Influence of the fluidic channel shape.

Length; (mm)	Groove fluidic; channel chip		Linear fluidic; channel chip
	Slope; (nm/RIU)	𝑅-square	Slope; (nm/RIU)	𝑅-square
10	17.3	0.98856	30.4	0.96057
20	12.2	0.99964	7.5	0.95356
30	19.5	0.97627	20.8	0.97674
40	54.4	0.97812	45.0	0.92771
50	38.4	0.97728	20.8	0.97674