Title :
Phase Modulation With Interferometric Detection as an Alternative to Intensity Modulation With Direct Detection for Analog-Photonic Links
Author :
Urick, Vincent J. ; Bucholtz, Frank ; Devgan, Preetpaul S. ; McKinney, Jason D. ; Williams, Keith J.
Author_Institution :
U.S. Naval Res. Lab., Washington
Abstract :
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.
Keywords :
analogue circuits; microwave photonics; optical modulation; phase modulation; RF gain; RF noise figure; compression dynamic range; direct analog-photonic links; intensity modulation; interferometric detection; microwave photonics; phase modulation; spurious-free dynamic range; Crosstalk; Dynamic range; Intensity modulation; Measurement; Microwave photonics; Noise figure; Optical noise; Phase detection; Phase modulation; Radio frequency; Analog photonics; intensity modulation direct detection; microwave photonics; phase modulation;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
DOI :
10.1109/TMTT.2007.904087
