This course aims at the introduction of optical network basics, the operation principles, and the design and optimization of optical networks.  The course will first review basic optical passive and active devices like fiber, laser, photodiode, optical filter, optical add-drop multiplexers, optical switch, modulator, optical amplifiers, and cross-connects. Then, we will discuss different optical and electronic signal processing techniques, including modulation, coding, and equalization.  Different optical networks, including passive optical networks, radio-over-fiber networks. data center network, optical metro and core networks, will be introduced.  To assure the network performance, we will consider optical networking operation, administration, management, and planning techniques (OAM&P). Optical network design and optimization will be discussed. These include the optimization of routing, wavelength assignment, and repeaters placement.   Finally, emerging optical network technologies like software-defined networks and elastic optical networks will be introduced.