Abstract

A passive compact TE-TM mode splitter has been demonstrated using Ti:LiNbO3 channel waveguides. Its operation is based on the interference between the two guided modes of a double-mode waveguide segment connecting single-mode input and output guides. A device made using one set of design parameters has splitting ratios of 12 dB for both polarizations. Another device made using different parameters has a splitting ratio of 17 dB for TM modes. The devices are capable of low-loss, broadband operation.

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