Abstract
Phase-Noise Degradation of an Optically Distributed Local Oscillator in a Radio Access Network
Highlights
High-frequency oscillators are key components in various engineering and scientific fields such as radar technology, satellite communications, radio communications, and particle physics
We propose the use of a simple single-loop opto-electronic oscillator (OEO) in the central-office of a 5G radio access network (RAN)
The phase-noise results indicate the feasibility of using an OEO as a centralized local oscillator (LO) for a 5G RAN
Summary
High-frequency oscillators are key components in various engineering and scientific fields such as radar technology, satellite communications, radio communications, and particle physics. In its simplest form, a delay line in the OEO’s loop is implemented with an optical fiber that acts as a resonator with a high quality factor A whispering-gallery-mode resonator or optical filters can be used to improve the SMSR [10,11,12] Another challenge when designing an OEO is the longterm stability, known as the frequency drift.
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