High-finesse frequency tunability of optoelectronic oscillator based on SiO2 optical waveguide ring resonator with the frequency locking technology
High-finesse frequency tunability of optoelectronic oscillator based on SiO2 optical waveguide ring resonator with the frequency locking technology
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基于锁频技术的SiO2光波导环形谐振器光电振荡器的高精度频率可调
DOI：
10.1016/j.optcom.2021.127236
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发表时间：
2021-11
影响因子：
2.4
通讯作者：
Xue Chenyang
中科院分区：
文献类型：
--
作者：
Jia Zerong;Chen Jiamin;Zheng Yongqiu;Chen Chen;Wu Liyun;Bai Ji;ong;Xue Chenyang
Fine tunability of oscillation frequency of optoelectronic oscillator (OEO) is crucial to its practicality. An approach of utilizing frequency locking technology is presented to realize the high-finesse tunable output of OEO based on SiO2optical waveguide ring resonator (OWRR). Then the OEO system based on SiO2OWRR is constructed, consisting of OEO loop and frequency locking loop. When the laser frequency is locked at the resonant frequency of the SiO2OWRR, the stable single-mode oscillation is realized based on the filtering effect of SiO2OWRR. The OEO oscillation frequency can be precisely tuned by adjusting the locking position of laser frequency, and a high-finesse tunable output of microwave signal is obtained with a tuning step of 20 kHz. Moreover, the change of locking position would not deteriorate the phase noise; for the generated signal at 2 GHz at different locking point, the phase noise is about -89.18 dBc/Hz at 10 kHz. These results show that the OEO based on SiO2OWRR using frequency locking technology is feasible to obtain fine tunability of oscillation frequency. It indicates that the SiO2OWRR has great potential in monolithic integrated OEO.
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