Optical two-tone signal generation without use of optical filter for photonics-assisted radio-frequency quadrupling.
Optical two-tone signal generation without use of optical filter for photonics-assisted radio-frequency quadrupling.
复制标题
DOI：
10.1364/ol.40.003651
复制
发表时间：
2015-08
期刊：
影响因子：
3.6
通讯作者：
A. Chiba;Yosuke Akamatsu;K. Takada
中科院分区：
文献类型：
--
作者：
A. Chiba;Yosuke Akamatsu;K. Takada
演示了光学双音 (OTT) 信号生成，无需光学波长滤波，可在光子学辅助的射频 (RF) 上变频中实现无波长操作。该原理基于对光学载体的选择性偏振操纵；首先使光学载流子的偏振倾斜，然后使用偏振器抑制载流子。由于理论计算得到的优化条件和实现25.7dB载波抑制的高偏振消光比，由10GHz正弦RF信号驱动的光强度调制器成功生成了40GHz分离的OTT信号。还通过实验证明了向四倍频射频信号的转换。
Optical two-tone (OTT) signal generation is demonstrated without optical wavelength filtering for wavelength-free operation in radio-frequency (RF) upconversion assisted by photonics. This principle is based on selective polarization manipulation for the optical carrier; the optical carrier's polarization is first tilted, and the carrier is then suppressed using a polarizer. Owing to optimized conditions obtained from theoretical calculation and the high polarization extinction ratio achieving a 25.7-dB carrier suppression, a 40-GHz separated OTT signal is successfully generated by an optical intensity modulator driven by a 10-GHz sinusoidal RF signal. Conversion into a frequency-quadrupled RF signal is also demonstrated experimentally.