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We show that quasi-single-mode transmission in few-mode fibers (FMFs) can reduce the number of spans for a fixed transmission distance and, consequently, the cost per bit for terrestrial transmission systems by minimizing both the Capex and Opex. The Gaussian-noise model is employed to estimate the nonlinear noise power spectral density both, which depends on the effective area of the FMF and span...
Few-mode fibers can increase optical power throughput, arguably the most important parameter that determines the RF gain, noise figure and dynamic range of long-distance analog fiber-optic links.
A novel remote frequency upconversion of a radio-over-fiber (RoF) signal is proposed and demonstrated. The traditional RoF signal at transmitter is replaced with frequency chirped optical pulse modulated by base-band data. During fiber transmission, the optical pulse evolves into an ultra-short pulse under the effect of fiber dispersion. The upconversion is completed at the remote antenna unit (RAU)...
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