An intensity modulation and coherent balanced detection intersatellite microwave photonic link using polarization direction control

A Linearization Analog Photonic Link With High Third-Order Intermodulation Distortion Suppression Based on Dual-Parallel Mach–Zehnder Modulator

“…In analog photonic link, SFDR is an important parameter, which is closely related to inter-modulation distortion (mainly IMD3) introduced by the nonlinearity of the external modulator. To eliminate the IMD3 and improve the SFDR of the link, some linearized schemes based on phase modulators [4]- [6], Intensity Mach-Zehnder Modulators (IM) [7], Dual-drive MZM (DD-MZM) [8], [9], and DPMZM [10]- [14] have been proposed over the last few decades.…”

“…The accurate differential delays and many parameter controllers are needed in the scheme, which would complicate the IMD3 suppression. In [9], an analog photonic link with DD-MZM based on double sideband-suppressed carrier (DSB-SC) and coherent balanced detection is proposed. The IMD3 is suppressed by approximately 46 dB.…”