Abstract
We report realization of an integrated (all-pass) phase-only filter with a record frequency resolution of 1 GHz (at least 10× improvement compared to a waveshaper) using Bragg grating technology in an all-fibre platform. The phase filter is utilized to realize high-speed fully-passive NOT and XNOR logic operations in a cm-long structure.
© 2023 The Author(s)
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