Abstract
A tunable transverse electric (TE) pass polarizer is demonstrated based on hybrid vanadium dioxide/silicon (VO2/Si) technology. The 20-μm-long TE pass polarizer exploits the phase transition of the active VO2 material to control the rejection of the unwanted transverse magnetic (TM) polarization. The device features insertion losses below 1dB at static conditions and insertion losses of 5.5dB and an attenuation of TM polarization of 19dB in the active state for a wavelength range between 1540nm and 1570nm. To the best of our knowledge, this is the first time that tunable polarizers compatible with Si photonics are demonstrated.
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