# Propagation angle within the slab of TE0 and TM0 modes as a function of the waveguide width for a slotwaveguide, calculated for a Si thickness of 220 nm at λ0=1550 nm

x_1 (Width, nm)	x_2 (Width, nm)	y_1 (Angle TE0, °)	y_2 (Angle TM0, °)
200	200	37.0494094275622	52.3655575067
250	250	41.7311308194829	55.344914153996
300	300	46.4247693833551	57.8974348313451
350	350	50.976903562192	60.2652772334029
400	400	54.8865900778193	62.2270950714087
450	450	58.3302776469952	64.0609102018378
500	500	61.1651653353098	65.5760457653255
550	550	63.6385724502791	67.0046105403291
600	600	65.691978255803	68.2010700763728