This course offers Fundamentals of optical signals and modern optical devices and systems. Optical systems sources (e.g., lasers and light-emitting diodes (LED), Light Dependent Resistor (LDR), Opto coupler, Opto interrupter, Infrared transmitter and receiver, Photovoltaic solar cells, photodetectors (e.g,.photodiodes, photomultiplier tubes)- Photo transistor. Clipper, Clamper. Light modulation components (e.g., liquid-crystal light modulators,) transmission media (e.g., free space or fibers), displays (LCOS micro displays).