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Phase Modulation With Interferometric Detection as an Alternative to Intensity Modulation With Direct Detection for Analog-Photonic Links

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5 Author(s)
Urick, V.J. ; U.S. Naval Res. Lab., Washington ; Bucholtz, F. ; Devgan, P.S. ; McKinney, J.D.
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We analyze the performance of analog-photonic links employing phase modulation with interferometric demodulation and compare it to intensity-modulation direct-detection links. We derive expressions for RF gain, RF noise figure, compression dynamic range, and spurious-free dynamic range for both architectures. We demonstrate theoretically and experimentally that phase-modulated links can outperform intensity-modulated links over substantial frequency ranges.

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Microwave Theory and Techniques, IEEE Transactions on  (Volume:55 ,  Issue: 9 )