Aryanfar, Iman; Marpaung, David; Choudhary, Amol; Liu, Yang; Vu, Khu; Choi, Duk-Yong; Ma, Pan; Madden, Steve; Eggleton, Benjamin J
We report a chip-based true-time-delay unit based on stimulated Brillouin scattering that uses an on–off Brillouin gain of 52 dB to enable 4 ns delay over a bandwidth of 100 MHz and a phase shift of ∼200°. To verify these operations, we use a two-tap microwave filter configuration and observed changes in the free spectral range of the filter and shift in the spectrum of the filter. The realization of these functionalities on chip-scale devices is critical for phased-array antennas, multibeam...[Show more]
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