Table 1 Structural parameters of the designed edge coupler.

From: Subwavelength grating-assisted silicon nitride edge coupler with relaxed alignment tolerance

Ltotal

L1

L2

L3

Λ

wtip

wSWG

wSiN

110 μm

60 μm

20 μm

14 μm

400 nm

200 nm

1 μm

1 μm

w1

w2

w3

w4

g1

g2

g3

 

200 nm

700 nm

600 nm

600 nm

3 μm

1.2 μm

1.1 μm