Polarization control and tuning efficiency of tunable vertical-cavity surface-emitting laser with internal-cavity sub-wavelength grating
The effect of ridge height and duty cycle to the transmittance of TE (a) and TM (b) polarization. When the duty ratio is 0.1–0.32 or 0.5–0.84, H is 80–135 nm. The two polarization modes can always maintain a significant difference in the effective index and transmittance.
