CAJ | 학술논문

高速光纤通信系统在传输容量得到增加的同时,面临着色散、非线性效应等日益突出的问题,成为影响光纤传输性能的主要因素.选择合适的调制码型,是提高通信传输质量的有效途径.在介绍啁啾归零码的生成和频谱特性的基础上,通过分析光纤传输模型,对CRZ码在取不同啁啾调制深度和不同色散补偿光纤长度下的系统性能作仿真分析.结果表明:采用合适的CRZ码将预啁啾技术和其他技术相结合可以提高高速传输系统的传输性能.
고속광섬통신계통재전수용량득도증가적동시,면림착색산、비선성효응등일익돌출적문제,성위영향광섬전수성능적주요인소.선택합괄적조제마형,시제고통신전수질량적유효도경.재개소조추귀령마적생성화빈보특성적기출상,통과분석광섬전수모형,대CRZ마재취불동조추조제심도화불동색산보상광섬장도하적계통성능작방진분석.결과표명:채용합괄적CRZ마장예조추기술화기타기술상결합가이제고고속전수계통적전수성능.
High-speed optical transmission has larger capacity and wider band compared to conventional sys-terns. But group velocity dispersion(GVD) and nonlinear optical effects become the major obstacles in these systems. Using correct modulation format based on the difference condition is a fight choice for improving the performance of the systems. In the paper, a method of chirped return- to-zero(CRZ) code modulated generation was described, the CRZ code's characteristics on spectra domain were introduced, and the performance of the optical transmission systems using the CRZ code for different chirp modulation depth and different dispersion compensation fiber length were simulated and analyzed. The results indicated that choosing appropriate CRZ cede combined with other technolo-gy can improve the performance of optical transmission systems.