Photonic Hilbert transformers based on laterally apodized integrated waveguide Bragg gratings on a SOI wafer.
We experimentally demonstrate high-performance integer and fractional-order photonic Hilbert transformers based on laterally apodized Bragg gratings in a silicon-on-insulator technology platform. The sub-millimeter-long gratings have been fabricated using single-etch electron beam lithography, and the resulting HT devices offer operation bandwidths approaching the THz range, with time-bandwidth products between 10 and 20.
Hamed Pishvai
HP
Bazargani
Maurizio
M
Burla
Lukas
L
Chrostowski
José
J
Azaña