Optoelectronics

By the end of this course, students will be able to:

• Understand the fundamental principles of optical fiber communications and the physical properties of optical fibers (attenuation, bandwidth).

• Describe the operation and characteristics of light sources (PN junction LEDs, laser diodes) and photodetectors (photodiodes).

• Design and analyze amplification and filtering circuits for optical receivers, considering noise and bandwidth constraints.

• Evaluate the impact of noise in photodetection and propose solutions to optimize signal-to-noise ratio (SNR).

• Apply theoretical knowledge to practical scenarios in fiber optic communication systems.

This course provides an introduction to optoelectronics, focusing on fiber optic communication systems. The main topics covered include:

• Optical Fiber Fundamentals: Types of optical fibers, attenuation mechanisms, dispersion, and bandwidth limitations.

• Light Sources: Operation and characteristics of PN junction-based light sources (LEDs and laser diodes), including modulation and efficiency.

• Photodetectors: Principles of photodiodes (PIN, APD), responsivity, and noise mechanisms.

• Amplification and Filtering Electronics: Design of transimpedance amplifiers (TIAs), noise analysis, and filtering techniques for optical receivers.

• Noise in Photodetection: Sources of noise (shot noise, thermal noise, dark current), and strategies to minimize their impact on system performance.

• System-Level Considerations: Integration of components into fiber optic communication links, including budget calculations and performance optimization.

The course combines theoretical lectures, practical exercises, and laboratory sessions to reinforce concepts and develop hands-on skills.

• Basic knowledge of semiconductor physics and PN junctions.

• Familiarity with analog electronics (amplifiers, filters, and noise analysis).

• Understanding of fundamental communication principles (modulation, signal transmission).