CAJ | 학술논문

对包括拉曼散射和三阶色散(Third-order dispersion,TOD)效应在内的超短光孤子脉冲传输特性分析的基础上,通过数值模拟、分析、拟合得出了TOD效应引起的孤子自频移量与距离(Z)、脉冲宽度(T_0)和参量β_3之间的量化关系,完善了以前只考虑拉曼散射效应的孤子频移量的计算公式,对孤子自频移引起的脉冲延时进行了研究.研究结果表明由TOD效应引起的孤子频移量△ω_(TOD) =kT_0~(-7)Z~(5/2)β_3~(4/5),孤子总的脉冲延时量△T= k_1Z~2,由TOD效应引起的孤子脉冲延时△T_(TOD)=k_2β_3.该结果为研究基于飞秒量级的高速光开关有重要意义.
대포괄랍만산사화삼계색산(Third-order dispersion,TOD)효응재내적초단광고자맥충전수특성분석적기출상,통과수치모의、분석、의합득출료TOD효응인기적고자자빈이량여거리(Z)、맥충관도(T_0)화삼량β_3지간적양화관계,완선료이전지고필랍만산사효응적고자빈이량적계산공식,대고자자빈이인기적맥충연시진행료연구.연구결과표명유TOD효응인기적고자빈이량△ω_(TOD) =kT_0~(-7)Z~(5/2)β_3~(4/5),고자총적맥충연시량△T= k_1Z~2,유TOD효응인기적고자맥충연시△T_(TOD)=k_2β_3.해결과위연구기우비초량급적고속광개관유중요의의.
Based on analysis of the characteristics of ultrashort optical soliton, influences of third-order dispersion (TOD) and Raman scattering were taken into account. The relationships between △ω_(TOD) and T_0, Z ,β_3 were obtained by using the numerical simulation method, analysis method and fitting method. It improves the self-frequency shifting formula which considered Raman scattering only. The volume of the pulse delay caused by the self-frequency shifting was also studied. The result indicates that the amount frequency shifting caused by TOD is △ω_(TOD) =kT_0~(-7)Z~(5/2)β_3~(4/5), the amount pulse delay △T= k_1Z~2, the pulse delay caused by TOD is △T_(TOD)=k_2β_3. This result is very important for the high-speed optical switch.