Lee Seung-Hun, Kim Hyoung-Jun, Song Jong-In
Opt Express. 2014 Jan 13;22(1):183-92. doi: 10.1364/OE.22.000183.
A broadband photonic single sideband (SSB) frequency up-converter based on the cross polarization modulation (XPolM) effect in a semiconductor optical amplifier (SOA) is proposed and experimentally demonstrated. An optical radio frequency (RF) signal in the form of an optical single sideband (OSSB) is generated by the photonic SSB frequency up-converter to solve the power fading problem caused by fiber chromatic dispersion. The generated OSSB RF signal has almost identical optical carrier power and optical sideband power. This SSB frequency up-conversion scheme shows an almost flat electrical RF power response as a function of the RF frequency in a range from 31 GHz to 75 GHz after 40 km single mode fiber (SMF) transmission. The photonic SSB frequency up-conversion technique shows negligible phase noise degradation. The phase noise of the up-converted RF signal at 49 GHz for an offset of 10 kHz is -93.17 dBc/Hz. Linearity analysis shows that the photonic SSB frequency up-converter has a spurious free dynamic range (SFDR) value of 79.51 dB · Hz(2/3).
提出并通过实验证明了一种基于半导体光放大器（SOA）中交叉极化调制（XPolM）效应的宽带光子单边带（SSB）频率上变频器。光子SSB频率上变频器产生光单边带（OSSB）形式的光射频（RF）信号，以解决由光纤色散引起的功率衰落问题。所产生的OSSB RF信号具有几乎相同的光载波功率和光边带功率。在40公里单模光纤（SMF）传输后，这种SSB频率上变频方案在31 GHz至75 GHz范围内呈现出几乎平坦的电RF功率响应与RF频率的函数关系。光子SSB频率上变频技术显示出可忽略不计的相位噪声劣化。对于10 kHz的偏移，49 GHz处上变频RF信号的相位噪声为-93.17 dBc/Hz。线性分析表明，光子SSB频率上变频器的无杂散动态范围（SFDR）值为79.51 dB·Hz(2/3)。
