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对铒镱共掺做环谐振器的放大特性进行了理论分析,给出了器件的传递函数和功率增益的公式。在抽运光波长为0.98μm、信号光中心工作波长为1.55μm的情况下,分析了抽运光功率、信号光功率、铒镱掺杂浓度、微环与信道间的振幅耦合比率对放大器放大特性的影响,给出了上下信道的传输光谱,并对其结构进行了优化设计。模拟结果表明,与同等长度的直条形铒镱共掺波导放大器相比,该器件可获得更高的信号光增益,选取P_(p0)=8mW,P_(s0)=36.5μW,N_(Er)=1×10~(26)m~(-3),N_(Yb)=3×10~(27)m~(-3),该器件可容易地获得11.6 dB以上甚至高达60 dB的信号光功率增益。这种强放大功能的铒镱共掺微环谐振型放大器,将更有利于器件在尺寸上的小型化、集成化。
The amplification characteristics of the erbium-ytterbium co-doped ring resonator are theoretically analyzed, and the formulas of the transfer function and power gain of the device are given. The pump power, the signal power, the erbium-ytterbium doping concentration, the amplitude-coupling ratio between the microring and the channel are analyzed to amplify the amplifier with the pumping light wavelength of 0.98μm and the signal light center operating wavelength of 1.55μm. Characteristics of the transmission channel is given up and down the transmission spectrum, and its structure was optimized. The simulation results show that the device can obtain higher signal light gain than the same length of bar-shaped erbium-ytterbium co-doped waveguide amplifier. P_ (p0) = 8mW, P_ (s0) = 36.5μW, ) = 1 × 10 ~ (26) m ~ (-3), N_ (Yb) = 3 × 10 ~ (27) m ~ (-3) .The device can easily obtain the signal above 11.6 dB or even up to 60 dB Optical power gain. This strong amplification of erbium ytterbium co-doped micro-ring resonant amplifier, the device will be more conducive to the size of the miniaturization, integration.