Shee Y G, Al-Mansoori M H, Yaakob S, Man A, Zamzuri A K, Adikan F R Mahamd, Mahdi M A
Department of Electrical Engineering, Faculty of Engineering, University of Malaya, 50603 Kuala Lumpur, Malaysia.
Opt Express. 2012 Jun 4;20(12):13402-8. doi: 10.1364/OE.20.013402.
An all-optical generation of a millimeter wave carrier from a multiwavelength Brillouin-erbium fiber laser is presented. Four-channel output with spacing of about 21.5 GHz is generated from the fiber laser by controlling the gain in the cavity. A dual-wavelength signal with spacing correspondent to six orders of Brillouin frequency shift is obtained by suppressing the two channels at the middle. Heterodyning these signals at the high-speed photodetector produces a millimeter wave carrier at 64.17 GHz. Temperature dependence characteristic of Brillouin frequency shift realize the flexibility of generated millimeter wave frequency to be tuned at 6.6 MHz/ °C.
提出了一种从多波长布里渊 - 铒光纤激光器全光产生毫米波载波的方法。通过控制腔内增益，从光纤激光器产生了间距约为21.5 GHz的四通道输出。通过抑制中间的两个通道，获得了间距对应于六个布里渊频移阶数的双波长信号。在高速光电探测器处对这些信号进行外差产生了64.17 GHz的毫米波载波。布里渊频移的温度依赖性特性实现了所产生毫米波频率在6.6 MHz/°C下可调的灵活性。
