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A two-stage optical frequency comb (OFC) generator is proposed based on two polarization modulators (PolMs) and a Mach–Zehnder interferometer (MZI). In the first-stage OFC generator, a group of even-order sidebands and a group of odd-order sidebands are generated with similar powers, respectively, based on a single PolM. By tuning the power difference between the two sideband groups using an MZI,...
A phase stable radio frequency (RF) distribution technique is proposed and experimentally demonstrated. The system transmits optical frequency comb lines through an optic cable with multiple fibers. At the receiver, RF phase variation is removed by frequency mixing based on phase conjugation. In the proposed system, round-trip transmission is implemented through different fibers, thus the signal degradation...
A scheme for photonic generation of binary differential phase-coded microwave signals is proposed and demonstrated. In the proposed system, two optical sidebands are generated and phase modulated by an electrical signal. Then, the two optical sidebands are separated by a Mach-Zehnder interferometer (MZI) and properly delayed between each other before combined at an optical coupler. By balanced photodetection...
A flat optical frequency comb generation scheme using a polarization modulator and a Mach-Zehnder interferometer is proposed and experimentally demonstrated. OFCs with up to 11 comb-lines are generated with good flatness and tunable frequency spacing.
A novel approach to generating an optical frequency comb (OFC) based on stimulated Brillouin scattering (SBS) in optical fiber is proposed using a stocks wave recycling loop. Thanh to the stocks wave recycling loop, the SBS threshold is reduced and the SBS conversion efficiency is greatly improved, leading to increased number and enhanced flatness of the generated comb lines. An experiment is carried...
A full-duplex optical single sideband (OSSB) modulated radio-over-fiber (ROF) system with centralized light source is proposed and demonstrated. The proposed system can realize light source centralization based on optical sideband reuse, which not only avoids the use of a specific light source in the base station (BS) but also reduces signal distortion due to bidirectional fiber transmission. Using...
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