TY - JOUR
T1 - Microwave generation with photonic frequency sextupling based on cascaded modulators
AU - Gao, Yongsheng
AU - Wen, Aijun
AU - Yu, Qingwei
AU - Li, Ningning
AU - Lin, Guibin
AU - Xiang, Shuiying
AU - Shang, Lei
PY - 2014/6/15
Y1 - 2014/6/15
N2 - A novel scheme to optically generate a microwave signal with frequency sextupling is proposed. The proposed scheme is based on cascading an intensity modulator (IM) and a dual-parallel Mach-Zehnder modulator (DPMZM), without any optical or electrical filter. The low frequency local oscillator signal is divided into two paths, with one path driving the IM at the minimum transmission point and the other path driving the upper arm of the DPMZM. By controlling the three dc biases of the DPMZM, the third-order sidebands are generated, with other sidebands well suppressed. A 20-dB electrical spurious suppression ratio is demonstrated in the experiment. The phase noise measurements show that the phase noise performance of the generated microwave signal is not deteriorated by the optical system. The proposed scheme has no strict requirements for the modulation indexes and the generated signal exhibits advantages of high frequency tunability and purity.
AB - A novel scheme to optically generate a microwave signal with frequency sextupling is proposed. The proposed scheme is based on cascading an intensity modulator (IM) and a dual-parallel Mach-Zehnder modulator (DPMZM), without any optical or electrical filter. The low frequency local oscillator signal is divided into two paths, with one path driving the IM at the minimum transmission point and the other path driving the upper arm of the DPMZM. By controlling the three dc biases of the DPMZM, the third-order sidebands are generated, with other sidebands well suppressed. A 20-dB electrical spurious suppression ratio is demonstrated in the experiment. The phase noise measurements show that the phase noise performance of the generated microwave signal is not deteriorated by the optical system. The proposed scheme has no strict requirements for the modulation indexes and the generated signal exhibits advantages of high frequency tunability and purity.
KW - Frequency sextupling
KW - Mach-Zehnder modulator (MZM)
KW - Microwave generation
KW - Microwave photonics
UR - http://www.scopus.com/inward/record.url?scp=84901257012&partnerID=8YFLogxK
U2 - 10.1109/LPT.2014.2318772
DO - 10.1109/LPT.2014.2318772
M3 - 文章
AN - SCOPUS:84901257012
SN - 1041-1135
VL - 26
SP - 1199
EP - 1202
JO - IEEE Photonics Technology Letters
JF - IEEE Photonics Technology Letters
IS - 12
M1 - 6805159
ER -