# Propagation angle within the slab of TE0, TE1 and TE2 modes as a function of the waveguide width, calculated for a Si thickness of 220 nm at a wavelength of 1550 nm

x_1 (Width, nm)	x_2 (Width, nm)	x_3 (Width, nm)	y_1 (Angle TE2, °)	y_2 (Angle TE1, °)	y_3 (Angle TE0, °)
400	400	400	NaN	NaN	52.2440651298559
450	450	450	NaN	31.7439402311001	56.2768389640966
500	500	500	NaN	32.47250322971	59.6465325883267
550	550	550	NaN	34.3166232064842	62.3405903107083
600	600	600	NaN	37.3764215003812	64.8022083143001
650	650	650	NaN	40.6825606647756	66.7104454440322
700	700	700	NaN	44.1168344531435	68.3934487399998
750	750	750	31.7439402311001	47.1841645983349	69.8092437024759
800	800	800	31.7924212348993	50.1720258877605	71.1690342093924
850	850	850	33.0487496349471	52.5950019343896	72.26915507696
900	900	900	35.2161099919427	54.8034176821001	73.2753106673591
950	950	950	37.6064009408805	56.7135684998959	74.1487824208262
1000	1000	1000	40.3662799047268	58.5817751113076	75.01326765263
1100	1100	1100	45.1505715488111	61.5496169947948	76.4031010970123
1200	1200	1200	49.3375335324792	64.0678905289552	77.5988998615631
1300	1300	1300	52.7346055769599	66.1232408531786	78.5892937470461
1400	1400	1400	55.6846877670074	67.9234475569744	79.4665187079167
1500	1500	1500	58.1291279159235	69.4341697499524	80.2112998063923
1600	1600	1600	60.3005952714452	70.788340155658	80.8854914000776
1700	1700	1700	62.141718845643	71.9482260363382	81.4689484682164
1800	1800	1800	63.8091230514977	73.0061079037348	82.0057947320273
1900	1900	1900	65.2484828884064	73.9264111411402	82.4775597143086
2000	2000	2000	66.5717685346183	74.7772013405871	82.9174093625949