We propose and demonstrate experimentally a novel scheme to realize all-optical up-conversion and wavelength-conversion based on the bi-directional-pump four-wave mixing (FWM) effect in high nonlinear fibers (HNLFs). The pump is generated with optical carrier suppression in a Mach-Zehnder modulator. The two pumps are always parallel and phase-locked. A balance-detection photo-detector for optical signal detection is employed with 3-dB improvement in power penalty. The 2.5-Gb/s signals are transmitted successfully over the 25-km single-mode fiber in 30-GHz radio over fiber (ROF) systems.
© 2010 Chinese Optics Letters
Tianliang Wang, Hongwei Chen, Shizhong Xie, Bouchaib Hraimel, Luo Ma, and Xiupu Zhang, "All-optical up-conversion for 2.5-Gb/s signals in ROF systems based on FWM effect in HNLF," Chin. Opt. Lett. 8, 1037-1039 (2010)