Coherent resonant Ka-band photonic microwave receiver

Details Coherent resonant Ka-band photonic microwave receiver Coherent resonant Ka-band photonic microwave receiver

2008-06-19

arxiv.org/abs/0806.3239v1

Physics

Optics

Scientific paper

We propose theoretically and demonstrate experimentally a coherent microwave photonic receiver operating at 35 GHz carrier frequency. The device is based on a lithium niobate or lithium tantalate optical whispering gallery mode resonator coupled to a microwave strip line resonator. Microwave local oscillator is fed into the microwave resonator along with the microwave signal. We show that the sensitivity of this receiver significantly exceeds the sensitivity of the incoherent quadratic receiver based on the same technology. The coherent receiver can possess a dynamic range in excess of 100 dB in 5 MHz band if a low noise laser is utilized.

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