Versatile, highly reconfigurable, high bandwidth, radio frequency and
microwave photonic Hilbert transformers with soliton crystal Kerr
micro-comb sources
- David Moss
Abstract
We experimentally demonstrate bandwidth-tunable RF photonic Hilbert
transformer based on an integrated Kerr micro-comb source. The
micro-comb is generated by an integrated micro-ring resonator with a
free spectral range of 48.9 GHz, yielding 75 micro-comb lines in the
telecom C-band. By programming and shaping the generated comb lines
according to calculated tap weights, we demonstrate high-speed Hilbert
transform functions with tunable bandwidths ranging from 1.2 GHz to 15.3
GHz, switchable center frequencies from baseband to 9.5 GHz, and
arbitrary fractional orders. The experimental results show good
agreement with theory and confirm the effectiveness of our approach.