Radio-Frequency Down-Conversion via Sampled Analog Optical Links

Abstract

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Non-Uniform Sub-Nyquist Optical Sampling by Acousto-Optic Delay Modulation

“…Figures of merit for sub-sampled photonic links, including link gain, noise U.S. Government work not protected by U.S. copyright. figure, and output intercept points, have been demonstrated experimentally and theoretically [11], [12], [14].…”

“…This convention for Nyquist zone numbering, although consistent with many sources including ADC manufacturers [26]- [30], is not universal. In particular, it differs from some conventions used to describe sub-sampled photonic links [11], [12], [17], [18]. Since non-uniform sampling in this work amounted to modulation of the MLL pulse spacing, (3) and its associated Nyquist zone definitions remain valid with the caveat that f out represents the output carrier frequency.…”