Silicon Photonics Enabled Hyper-Wideband RF Receiver With >85% Instantaneous Bandwidth
2018
We demonstrate the first-ever
silicon photonicsenabled hyper-
widebandRF
spread-spectrumlink. A
hybrid III/V-
silicon photonicmode-locked laser encoded with a four-channel
silicon photonicphase encoder is used to generate optical carriers that coherently demodulate a received RF signal spanning an instantaneous bandwidth greater than 85% of the
center frequency(12/14 GHz). This allows low-speed (<3 GHz) electronics to be used in place of the traditional costly and high-power wide-bandwidth electronics used in an all-electronic hyper-
widebandlink. In addition, integrated highly tunable optical notch filters are successfully used to reject unwanted narrowband interference, with rejection ratio and tunability that surpass conventional wireless technology.
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