Research Abstract
Wideband and compact TM-pass polarizer based on hybrid plasmonic grating in LNOI.
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Abstract
Based on the transverse electric (TE)/transverse magnetic (TM) polarization diversity in plasmonic Bragg gratings, a compact TM-pass/TE-stop polarizer is theoretically proposed on thin-film lithium niobate on insulator (LNOI) platforms. By introducing a large misalignment between metal gratings on both sides of the LNOI waveguide, we demonstrate a polarizer with a high extinction ratio of 20 dB, a low insertion loss of 2.5 dB, a wide waveband from 1.48 to 1.62 μm, and a compact size of only 23 μm on simulation.
External References
- PubMed ID:
- 31878665
- DOI:
- 10.1364/OE.27.034857
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