摘要
介绍了DPSK码型的产生原理,通过仿真软件模拟级联调制器产生各种DPSK光调制码型,给出了频谱,并基于仿真软件建立了DPSK光纤传输模型,重点考虑了光放大器的自发辐射(ASE)噪声对DPSK系统的性能影响。实际仿真结果表明了ASE噪声是限制级联DPSK传输系统传输距离的最主要因素。
Introduced the principle of differential phase-shift keying （DPSK）pattem generated at first, proves the feasibility of generating DPSK optical modulation formats with cascaded modulators with software simulation, and gives the spectrum. DPSK optical-fiber transmission model is built based on simulation software, with the main focus on the effects of the spontaneous emission of optical amplifier （ASE） noise on the DPSK system. Actual simulation results show that the ASE noise limits transmissive distance of the cascaded DPSK transmission system.
出处
《光通信技术》
CSCD
北大核心
2010年第3期54-56,共3页
Optical Communication Technology
