Abstract
A TM/TE convenor is combined with a TE-pass polariser on a common LiNbO3 chip to obtain an integrated optical, acoustically tunable wavelength filter. Its tuning range is 1.45–1.57 μm wavelength with a filter half-width of 2.8 nm. Owing to the combined acoustical/optical strip guide structure used in the mode convenor, a very low acoustic drive power of only 9 mW is required.
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