Chinese Optics Letters, 2021, 19 (10): 103901, Published Online: Aug. 23, 2021
Photonic-assisted FSK signal generation based on carrier phase-shifted double sideband modulation
microwave photonics frequency shift keying polarization-sensitive modulator microwave signals generation carrier phase-shifted double sideband modulation
Abstract
An approach to generate high-speed and wideband frequency shift keying (FSK) signals based on carrier phase-shifted double sideband (CPS-DSB) modulation is proposed and experimentally validated. The core part of the scheme is a pair of cascaded polarization-sensitive LiNbO3 Mach–Zehnder modulators and phase modulators, whose polarization directions of the principal axes are mutually orthogonal to each other. A proof-of-concept experiment is carried out, where a 0.5 Gb/s FSK signal with the carrier frequencies of 4 and 8 GHz and a 1 Gb/s FSK signal with the carrier frequencies of 8 and 16 GHz are generated successfully.
Muguang Wang, Yu Tang, Jian Sun, Jing Zhang, Qi Ding, Beilei Wu, Fengping Yan. Photonic-assisted FSK signal generation based on carrier phase-shifted double sideband modulation[J]. Chinese Optics Letters, 2021, 19(10): 103901.