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Broadband on-chip polarization mode splitters in lithium niobate integrated adiabatic couplers

Chung, H.P.; Lee, Chieh-Hsun; Huang, K.H.; Yang, S.L.; Wang, Kai; Solntsev, Alexander; Sukhorukov, Andrey; Setzpfandt, Frank; Chen, Y.H.


We report, to the best of our knowledge, the first broadband polarization mode splitter (PMS) based on the adiabatic light passage mechanism in the lithium niobate (LiNbO3) waveguide platform. A broad bandwidth of ~140 nm spanning telecom S, C, and L bands at polarization-extinction ratios (PER) of >20 dB and >18 dB for the TE and TM polarization modes, respectively, is found in a five-waveguide adiabatic coupler scheme whose structure is optimized by an adiabaticity engineering process in...[Show more]

CollectionsANU Research Publications
Date published: 2019-01-21
Type: Journal article
Source: Optics Express
DOI: 10.1364/OE.27.001632
Access Rights: Open Access


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