Abstract
Polarization handing devices including polarization beam splitters (PBSs) are playing a pivotal role in polarization-involved applications [1]. Many waveguide PBSs have been demonstrated with various structures. Regarding the design simplicity and fabrication tolerance, the multimode interference (MMI) structure is a good choice to realize PBSs. However, the conventional MMI-based PBS are quite long (10~103 μm) since the polarization dependence of the beat-length of an MMI section is not strong [2].
© 2013 Japan Society of Applied Physics, Optical Society of America
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