The simulation of coherent optical communication technology

Abstract

With the advent of the era of big data and the development of Internet technology, various emerging businesses have emerged. Due to the lack of optical coherence, the essence of optical fiber communication is a noise carrier communication system. In order to be able to communicate with high capacity over long distance, various modulation methods and heterodyne reception are used to construct coherent optical communication system. Heterodyne/coherent fiber communication is being accelerated in its research and development due to the possibility of increasing the receiving sensitivity by 20-30dB[1]. The coherent optical communication system has good selectivity and large communication capacity. The receiving sensitivity of the coherent balanced detection technology is about 10 dB ~ 20 dB higher than that of the incoherent optical communication system, which greatly extends the transmission distance [2]. This paper will study the optical coherence communication system and its simulation, the main components are as follows: 1. General information and importance of the development status and future trend of coherent optical communication. 2. A review of coherent optical communication system. 3. Based on the understanding and analysis of the previous chapter, the OptiSystem software platform is used for system simulation. Designed the core algorithm of DSP processing unit and simulated the coherent optical communication system.