NonlinearWaveguideCoding

workspace：

Coding1: Tubeplot for helical duct

1.1

1.2

Coding2: I-Matrix-construction: \delta_{m,-n}\delta_{u,v}=[I] for easy our model

2.1

2.2

2.3

Coding3： Main_F.m

Coding4:

Coding4-Main_F_focus_vertification