Vol. 49, Issue 1, pp. 27-36

Vol. 49 Issue 1 pp. 27-36

Photonic generation of broadly tunable radio-frequency signal using a reflective semiconductor optical amplifier

Youxi Lu, Fei Wang, Jun Gu, Lun Shi, Mengmeng Peng, Jingxin Huang, Wen Kang

Keywords

radio frequency signal generation, semiconductor optical amplifiers, four-wave mixing

Abstract

A novel scheme for photonic generation of broadly tunable radio frequency signal using a reflective semiconductor optical amplifier (RSOA) is demonstrated. A continuous wave emitted from the laser diode is modulated by a Mach–Zehnder modulator, then the modulated optical carrier is injected into the RSOA. Due to the four-wave mixing effect in the RSOA, the limited frequency components of the modulated signal are expanded, which directly lead to the generation of a wide frequency comb. Two optical tunable bandpass filters are parallelly connected to select the desired sidebands, which are launched into a photodetector or photomixer to generate radio frequency signal by beating. Using the proposed method, the bandwidth of generated radio frequency signal can range from 20 to 300 GHz.

Vol. 49
Issue 1
Article No: 03
pp. 27-36

5.11 MB
OPTICA APPLICATA - a quarterly of the Wrocław University of Science and Technology, Faculty of Fundamental Problems of Technology