《光子交换与全光通信》属于光通信专业课程。光纤通信正逐渐成为现代通信传输特别是干线传输的主要方式，其发展的主要方向是进一步扩大通信容量。在光密集波分等技术极大地扩增了点对点的通信容量之后，交换节点处的电子瓶颈成为进一步发挥光通信优势的主要障碍，发展光子交换与全光通信网技术是解决这一问题的根本途径。学习和掌握光子交换与全光通信网技术的基本原理和各项关键，对于将来从事光通信工程技术工作的研究生来说非常有意义。通过该门课程的学习，期望学生能较全面地掌握光通信网络技术，特别是光子交换与全光网络的基本技术，包括光传输、光放大、光交换及其光网络组网技术和器件技术等。在熟悉现有光网络正在应用的成熟技术的基础上，能够了解正在发展中的光网交换技术的发展现状与发展趋势。通过本课程的学习，培养学生对光通信前沿研究工作的兴趣，提高学生从事光通信工程技术工作和研究工作的能力。

Optical Switching and All Optical Communications is one of the major courses on optical communication. Optical fiber communication has been becoming the main approach for modern communication transmission, and its developing direction is to further enlarging optical communication capacity. The dense wavelength division multiplexing (DWDM) and Erbium-doped fiber amplifier (EDFA) developed in recent years, called as “DWDM + EDFA” technology, benefit dilatation of communication so much that communication capacity of point-to-point is huge (reaching 10 Terabit per second). But the switching equipments used in telecommunication network are still electronic devices whose signal process capacity is almost at the electron limit and difficult to increase. This situation seriously obstructs the further development of optical fiber communication superiority. So, optical switching technology is in its crisis to be developed. Understanding the technologies of optical switching and all-optical communication is very important to the graduate students who want to work on communication engineering in the future. By studying this course, students are expected to generally learn the latest optical communication network techniques, including optical transmission, optical amplification, optical switching, optical network composition and components. Furthermore, this course is going to interest students in recent research and development of optical communication and increase their abilities in the investigation of optical communication engineering.