Numerical analysis of transmission characteristic of optical solitons in Gaussian-apodized fiber Bragg gratings
-
摘要: 为了研究光纤光栅中布喇格孤子的传输特性,基于耦合波理论采用有限差分法在孤子传播速度与传输距离无关的条件下,数值模拟了布喇格孤子在高斯变迹光纤光栅中的传输以及孤子之间的相互作用,得到一些有意义的结果。结果表明,输入功率和初始脉宽等初始条件的不同将导致孤子峰值强度的周期变化;具有初始频率啁啾时布喇格孤子在传输过程中被展宽(正啁啾)或被窄化(负啁啾),并始终受到高斯变迹光栅的制约。当输入两个孤子时,它们之间的相互作用对其相对相位和相对振幅参量敏感。Abstract: Based on the framework of the coupled modes theory, transmission of the Bragg solitons and interaction of the Bragg solitons were simulated with the finite-difference scheme in Gaussian-apodized fiber Bragg gratings under the condition with the transmission speed irrelevant to the transmission distance.According to the numerical results, the peak power of Bragg solitons changes with different incident peak power and pulse width.And interaction of two solitons relies on their relative phase and amplitude.When the initial pulse is chirped,transmission of Bragg solitons is broadened (positive chirp) or narrowed (negative chirp) and restricted by Gaussian-apodized gratings all the time.
-
-
[1] AGRAWAL G P.Nonlinear fiber optics[M].3th ed.Beijing:Pub-lishing House of Electronics Industry,2002:287-299(in Chinese).
[2] LIU Y M,YU Zh Y,YANG H B,et al.The inwestigation of the nonlinear characteristics of fiber Bragg gratings[J].Laser Technology,2006,30(1):101-106(in Chinese).
[3] AMNON Y.Optical electronics in modern communications[M].5th Ed.Beijing:Publishing House of Electronics Industry,2002:530-537(in Chinese).
[4] EGGLETON B J,de STERKE C M,SLUSHER R E.Bragg solitons in the nonlinear Schrödinger limit experiment and theory[J].J O S A,1999,B16(4):587-599.
[5] EGGLETON B J,de STERKE C M,SLUSHER R E.Nonlinear pulse propagation in Bragg gratings[J].J O S A,1997,B14(11):2980-2993.
[6] LEE S,KHOSRAVANI R,PENG J,et al.Adjustable compensation of polarization mode dispersion using ahigh-birefringence nonlinearly chirped fiber Bragg grating[J].IEEE Photonics Technology Letters,1999,11(10):982-983.
[7] de STERKE C M,EGGLETON B J.Coupled modes and the nonlinear Schrodingers equation[J].Phys Rev,1990,A42(1):550-555.
[8] GUO Q,ZHAO G Sh,WEN Q.Propagation properties of a piar of soliton pulses in a fiber[J].Acta Optica Sinica,1990,10(7):651-655(in Chinese).
[9] WANG Ch Y,YANG X Y.Effects of dispersion decreasing and loss on transmission of Bragg solitons in fiber Bragg gratings[J].Laser Infrared,2006,36(5):383-385(in Chinese).
[10] de STERKE C M,SIPE J E.Switching behavior of finite periodic nonlinear media[J].Phys Rev,1990,A42(5):2558-2569.
[11] de STERKE C M,JACHSON K R,ROOBERT B D.Nonlinear coupled mode equations on a finite interal:a numerical procedure[J].J O S A,1991,B8(2):403-412.
计量
- 文章访问数: 1
- HTML全文浏览量: 0
- PDF下载量: 10
下载: