光子学报, 2017, 46 (4): 0423001, 网络出版: 2017-05-03   

基于平面光波导谐振腔的可调谐光电振荡器

Tunable Optoelectronic Oscillator Based on Planar Waveguide Resonator
作者单位
中北大学 仪器科学与动态测试教育部重点实验室, 太原 030051
摘要
提出了一种基于平面光波导谐振腔的可调谐光电振荡器.该振荡器中, 相位调制器串联光波导谐振腔, 取代了传统系统中的强度调制器、长光纤和滤波器.由于光学谐振腔对光子频率和相位敏感, 调节激光器改变输出光的波长, 不仅可以调制光的强度, 还可以对微波光子进行选频输出.当光子在波导腔中发生谐振时, 产生很强的延时特性, 可以取代传统系统中的长光纤.整个光电振荡器系统体积为长29.5 cm、宽21 cm、高7 cm.实验中, 改变0.1 pm的光子波长, 能够产生步长为12.5~35.5 MHz的调谐, 调谐范围达2 GHz, 且系统能够产生10 GHz的微波信号, 在中心频率为10 GHz处其相位噪声为-109.7 dBc/Hz@10 kHz.该研究为光电振荡器的小型化和实用化提供了一种新的思路.
Abstract
A tunable optical oscillator based on a planar optical waveguide resonator was proposed. In this oscllator, the phase modulator is connected in series with the optical waveguide resonant cavity to replace the intensity modulator, the long fiber and the filter in the traditional system. Because the optical resonator is particularly sensitive to photon frequency and photon phase, by adjusting the laser wavelength, not only the intensity of the light can be adjusted, but also the frequency of the microwave photons can be selected. When the photon is resonant in the waveguide cavity, it will produce a strong delay characteristic, which can be used to replace the long fiber in the traditional system. The whole photoelectric oscillator system volume is long 29.5 cm, wide 21 cm, high 7 cm. In the experiment, each time to change the photon wavelength 0.1 pm, resulting in a 12.5~35.5 MHz step tuning effect, tuning range of 2 GHz. The system generates a 10 GHz microwave signal having a phase noise of -109.7 dBc/Hz@10 kHz at a center frequency of 10 GHz. Which provides a new idea for the miniaturization and practical application of the optical oscillator.

陈猛, 薛晨阳, 唐军, 刘文耀, 郑永秋, 钱坤, 谢成峰. 基于平面光波导谐振腔的可调谐光电振荡器[J]. 光子学报, 2017, 46(4): 0423001. CHEN Meng, XUE Chen-yang, TANG Jun, LIU Wen-yao, ZHENG Yong-qiu, QIAN Kun, XIE Cheng-feng. Tunable Optoelectronic Oscillator Based on Planar Waveguide Resonator[J]. ACTA PHOTONICA SINICA, 2017, 46(4): 0423001.

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