1 Introduction

2 Jet Model and Radiative Transfer
2.1 Force-Free Jet
2.2 General Relativistic Polarization Radiative Transfer

3 Analytical Expression of Polarization Flip by SSA

4 Resultant Images

5 Discussion
5.1 Thermal Particles in Accretion Disk
5.2 Effects on Rotation Measure Map
5.3 Application to Diverse AGN Jets
5.4 Comparison with Observations
5.5 Other Triggers of Polarization Flips

6 Conclusions