CAJ | 학술논문

采用有限差分方法对量子点半导体光放大器(QD- SOA)中的四波混频(FWM)现象进行了研究。通过仿真计算，分析了多个参数对四波混频效率的影响。增强泵浦光功率、增大QD- SOA的长度以及注入电流，四波混频效率明显增大。增大探测光功率以及泵浦光和探测光的波长间隔，四波混频效率均降低。基于四波混频效应实现了差分相移键控信号的异或逻辑操作，模拟得到了异或逻辑的时域和频域输出结果。在多个波长位置同时实现了异或逻辑，并对32比特的序列异或操作进行了仿真研究，得到了异或逻辑的时序结果及眼图。
채용유한차분방법대양자점반도체광방대기(QD- SOA)중적사파혼빈(FWM)현상진행료연구。통과방진계산，분석료다개삼수대사파혼빈효솔적영향。증강빙포광공솔、증대QD- SOA적장도이급주입전류，사파혼빈효솔명현증대。증대탐측광공솔이급빙포광화탐측광적파장간격，사파혼빈효솔균강저。기우사파혼빈효응실현료차분상이건공신호적이혹라집조작，모의득도료이혹라집적시역화빈역수출결과。재다개파장위치동시실현료이혹라집，병대32비특적서렬이혹조작진행료방진연구，득도료이혹라집적시서결과급안도。
The Four Wave Mixing(FWM) of the quantum dots semiconductor optical amplifiers(QD-SOA) was investigated by using the finite differential method based on the transitions between energy levels. The effects of the parameters on the efficiency of FWM were analyzed by simulation. The efficiency of FWM increased with the increase of the power of pump light, the length of QD- SOA and the injected current. The efficiency of FWM decreased with the increase of the power of the probe light and wavelength space. The exclusive- OR (XOR) logic of differential phase- shift keying signals was realized based on the FWM effect and the time domain and frequency domain results of the XOR logic were got by simulation. The XOR logics at position with different wavelengths were realized simultaneously. The XOR logic of 32- bit sequence was investigated and the XOR result and the eye diagram were achieved.