Chinese Optics Letters, Volume. 23, Issue 5, (2025)
Demonstration of 123.72-Gbps D-band Fiber-THz-Fiber System Based on Full Photonic Conversions Technology with Broadband Optoelectronic Devices [Early Posting]
We demonstrated a fiber-terahertz (THz) -fiber communication system at the D-band based on full photonic conversions, exploiting a modified uni-traveling-carrier photodiode (MUTC-PD) module to achieve optical-to-THz conversion at the transmitter end and an ultra-broadband packaged thin-film lithium niobate Mach-Zehnder modulator (MZM) to convert the THz signal to optical at the receiver end. This system successfully realized the transmission of 33-Gbaud 16-quadrature amplitude modulation (QAM) and 31-Gbaud probabilistic shaping (PS)-64-QAM signals through 10-km standard single-mode fiber (SSMF), 0.6-m wireless distance, and the subsequent 5-km SSMF, achieving net data rates of 116.03 Gbps and 123.72 Gbps, respectively.
