Learning Outcomes

Optical Sources

Semiconductor Gain Media- Structure, Spectrum

Optical Sources: LED

External Quantum Efficiency

Modulation Bandwidth of LED

Optical and Electrical Bandwidth of LED

Emission Pattern of LED

Optical Sources: Laser Diodes over LEDs

Laser Diodes: Resonator Concepts

Lesson Summary

This module will discuss LED's You will learn about LED parameters and their efficiency as well as LED and laser diode structures.

Understanding Optical Sources in Fiber Optic Communication - Course Assessment

This free online course covers the processes that take place in fiber-optic cables to enable optic communication.

Understanding Optical Sources in Fiber-Optic Communication

‘Understanding Optical Sources in Fiber-Optic Communication’ is an exciting course that introduces you to the multiple processes involved in optical communication. The different internal operations that take place in the fiber-optic cable that makes communication so seamless will be revealed. Additionally, you will learn what makes LEDs and laser diodes a preferred choice over other optical sources.

‘Understanding Optical Sources in Fiber Optic Communication’ is a free online course that seeks to enlighten learners on how optical sources in fibre-optic communication works. In optical communications, there is a device that converts an electrical signal into an optical signal. For fibre-optics with glass fibres, light in the infrared region is used because the contracting of the fibre is far less at those wavelengths. In the course, you will discover the different optical sources used, specifically light-emitting diodes (LED) and laser diodes. An LED is a directional light source with the maximum emitted power in the direction perpendicular to the emitting surface. A semiconductor device, similar to a light-emitting diode in which a diode-pumped directly with electrical current can create lasing conditions at the diode's junction, will be discussed. Laser diodes are the most common type of lasers produced, with a wide range of uses that include fibre-optic communications, barcode readers, laser pointers and light beam illumination.
Next, you will compare the major difference between lasers and LEDs. Lasers are more powerful, operate at faster speeds and can also transmit light farther with fewer errors. However, a laser is also far more expensive than LEDs. You will go on to learn about the modulation bandwidth of LEDs and what limits their bandwidth. You will also study how efficiently a device converts electrons to photons and allows them to escape, otherwise known as ‘external quantum efficiency’. This course gives you an understanding of the processes that take place between devices to enable optical communication to be successful. Fibre-optic cables work by applying the basic principles of reflection and refraction. When light strikes a shiny or mirrored object, it bounces. When light travels between two substances that are of different thickness or density, it refracts, depending on the angle at which it strikes the substance. At a certain angle, light no longer travels between the substances but reflects into the original substance altogether. The boundary now acts as a mirror, keeping the light inside. This is called ‘total internal reflection’’ and is the foundation of fibre-optic technology.
Fibre-optic cables have changed the world in many ways. You may have seen plastic fibres carrying coloured lights in decorative applications. You might not know that the unique properties of fibre-optic technology have allowed medical personnel to see places in the human body with greater ease and comfort to the patient, or that real glass fibre-optic cables are now the foundation of our communication and computer network systems. Many thousands of kilometres of installed fibre-optic cables carry different types of information underground, through tunnels, building walls, ceilings and many other places. Humanity enjoys the everyday benefits of optical communication when watching favourite shows, calling a friend via video call or even sitting around a computer or on a phone doing this course - all examples of optical communication. We are in a modernised era where technological development is increasing every day. Everything we have achieved so far is impressive and was unimaginable to earlier generations. What is yet to be achieved we cannot possibly fathom. Do you want to be a part of this exciting opportunity in an ever-changing world? Start this course today and take a step into this compelling world!

Inside the Coursera-Udemy Deal: Three Bids, Two Years and a Rival Suitor

Class Action: 50,000 Seek Payouts, Costing Coursera, Udemy Millions

6 Best Cyber Threat Intelligence (CTI) Courses in 2025

8 Best Ecology Courses for 2025: How Species and Systems Interact

[2025] Massive List of Thousands of Free Certificates and Badges

Coursera’s New Deal with Google Could Cost the Company Millions

Chinese Edtech Pivots: Well-rounded Education, Hardware, Agriculture E-commerce, Fast-Food, Garments, and More

UAE home ownership now affordable for residents earning Dh20,000 a month

Boost Your AI Confidence with Google’s Course

2U Lays Off Staff for the Sixth Time Since its $800M edX Acquisition

Learn English as a Second Language (ESL) with Hundreds of Courses & Sites

Udemy Faces Instructor Backlash Over Widespread Course Rating Glitch

Harvard CS50 Guide: How to Pick the Right Course (with Free Certificate)

Four Months After Unveiling Ambitious AI Roadmap, Udemy’s Co-founder CTO is Out

UAE 2026: Major Changes Set to Transform Daily Life Next Year

Udemy Earns More, Pays Instructors Less: Class Central Exclusive

Aims & Objectives of ISO/IEC 17025:2017

Accrediting to ISO/IEC 17025:2017

Main Sections of ISO/IEC 17025:2017

This module presents the fundamental aspects of ISO/IEC 17025:2017 along with its aims and objectives. The module also explains different forms of standardized verbs used throughout the standard. Moreover, you will also learn the benefits of accrediting to ISO/IEC 17025. Lastly, an overview of the section's standard is also given.

General and Structural Guidelines for Laboratories

Resource Requirements for Testing Laboratories

Contracts, Validation, Sampling & Handling

Technical Records, Uncertainty, Results Validity, & Reports

In this module, you will encounter the essential requirements given in clauses 4, 5, 6, and 7 of ISO/IEC 17025;2017. However, the explanation of Clause 7 is provided till sub-clause - 7.8. Through this module, you will learn about the general, structural, resource, and process requirements of ISO/IEC 17025:2017.

Information Management, Complaints & Nonconformities (NCs)

Management System Requirements

Taking Corrective Actions

In this module, you will see discussions on ISO/IEC 17025:2017 beginning from sub clause 7.9 that puts forward the complaint requirements put forth by the standard. Furthermore, it presents the standard's requirements regarding management systems. Moreover, it also contains necessary measures to be taken for corrective actions.

ISO/IEC 17025:2017 - Laboratory Management System- Course Assessment

Learn about laboratory management systems laid out by the ISO 17025 international standard in this free online course.

ISO/IEC 17025:2017 - Laboratory Management Systems

This short course is designed for individuals and laboratories looking forward to their standardisation. We explain management standards defined by the ‘ISO/IEC 17025 general requirements for testing and calibration laboratories competence’ devised by ISO. This comprehensive course explains all the basic and essential requirements of the standard. It also provides a simplified clause-by-clause explanation of its four main sections.

Fundamentals of Pest Control

Pest Identification and Assessment

Non-Chemical Pest Control Methods

Chemical Pest Control Methods

This module will teach you the fundamentals of pest control, types of pests and their impact, pest life cycles and behavior, factors influencing pest infestations, pest identification and assessment, non-chemical pest control methods, genetic control and sterile insect, chemical pest control methods, and integrated pest management (IPM) approach.

Monitoring and Prevention

Sustainable Pest Management

Urban and Structural Pest Control

Topics you will learn in this module include but are not limited to pest monitoring techniques, preventive measures and exclusion strategies, ecological impact of pesticides, selective pesticide use and resistance management, organic and biodynamic pest management, pest management in residential areas, and commercial and industrial pest control.

Pest Control and Management - Assessment

This free online course teaches you how to use chemical and non-chemical pest control techniques to manage infestations.

Pest Control and Management

Pests make environments unhygienic and are a major cause of diseases, some of which may be lethal and difficult or expensive to cure. Effective pest management and control are necessary to keep a living and working environment free from health hazards. This course provides the knowledge and skills required to establish and maintain a successful pest control management programme and describes various pests, their life cycles and their behaviour.

Foundations of Construction Safety Management

Safety Management for Hazardous Environments

High-risk Site Activities and Demolition Safety

This module covers risk identification and mitigation in construction work and how to evaluate and manage risk in compliance with CDM regulations. You'll also learn how behaviour affects safety on construction sites, including safety measures for scaffolding, excavation, demolition and more.

Course Assessment - Site Management Safety Training Scheme (SMSTS)

Learn how to manage safety on construction sites in accordance with UK legal provisions in this free online course.

Site Management Safety Training Scheme (SMSTS)

Construction workers are often vulnerable to injuries and hazards so ensuring safety is maintained consistently is crucial for both site managers and workers. This course covers the essential knowledge needed for maintaining safety on construction sites. You'll learn to identify and assess risks while adhering to UK industry regulations. In addition, we'll discuss safety measures to take during erecting scaffolding, excavations and demolitions.

Introduction to Hot Work

Classification of Hot Work Areas

Roles and Responsibilities

Hot Work Permit

Hot Work Risk Assessment

Essential Safety Precautions

This module will familiarize you with hot work processes, including their potential hazards and safety precautions. You'll learn how to assess the risks associated with hot work and determine appropriate control measures. You'll also understand the hot work permit system and the roles & responsibilities of those involved in the permitting process.

Hot Work Safety - Course Assessment

Learn how to manage the hazards associated with hot work processes in this free online health and safety course.

Hot Work Safety

This hot work safety training equips you with the essential knowledge to recognize and mitigate hot work hazards. You'll understand the hot work risk assessment process and hierarchy of controls for effectively reducing risks. The course explains the hot work permit system along with the roles and responsibilities of those involved in the permitting process. You'll also gain a clear understanding of hot work permitted and prohibited areas.

Introduction to Traffic Marshalling

Traffic Management

Temporary Traffic Control

Traffic Risk Assessment

Vehicle Signaling

Reversing Vehicles

Health and Safety

In this module, we will look at the fundamental objectives of traffic marshalling and the general duties of a traffic marshal. A traffic marshal's responsibilities when controlling traffic on a highway or construction areas shall be examined. Assessing risks along with health and safety concerns of traffic near construction areas will be assessed.

Construction Safety: Traffic Marshalling - Course assessment

Train as a traffic marshal or bankman who provides traffic management on construction sites in this free online course.

Construction Safety: Traffic Marshalling

This course takes an in-depth look at the role of traffic marshals on construction sites. Traffic management is important to maintaining health and safety as the presence of heavy machinery and large vehicles creates a need for the efficient direction of traffic. Traffic management in such a busy area faces hazards and safety risks, which we identify in this course. Sign up to train as a traffic marshal or bankman and add a skill to your CV.

Introduction to the AS Standards

Organization's Context and Leadership

QMS Planning and Support

This module introduces students to the AS standards for suppliers of the aviation industry. It explains the importance of regulations in the aerospace industry and navigates them through the journey of different AS standards. It also explains the requirements of Clauses 4, 5, 6, and 7 of this standard.

Organizational Operations

Operations and Evaluation

Organizational Improvement

This module explains the requirements of Clauses 8, 9, and 10 of AS9100D. These requirements are regarding organizational operations, evaluation, and continuous improvement of the organizational operations.

AS9100D Quality Management System (QMS) for Aerospace Industry - Course Assessment

Learn the requirements of AS9100D for the developers and suppliers of components for the aerospace & defense industries.

AS9100D Quality Management System (QMS) for Aerospace Industry

This course explains different clauses and their various requirements for the organizations that develop, design, or supply parts, components, and assemblies concerned with the aerospace and defense industries. After enrolling, the students will be able to navigate the differences between the different versions of the AS standards. Moreover, they will also get a simple and straightforward explanation of this standard's requirements.

Introduction to Hazardous Materials Handling - Learning Outcomes

Understanding Hazardous Materials

Legal and Regulatory Compliance

Importance of Hazard Communication

Risk Assessment and Management

Personal Protective Equipment (PPE) for Hazardous Materials Handling

Introduction to Hazardous Materials Handling - Lesson Summary

In this module, participants will have a solid foundation in understanding hazardous materials, legal and regulatory compliance, hazard communication, risk assessment, and the proper use of personal protective equipment. This knowledge is essential for creating a safe and compliant working environment in industries dealing with hazardous materials.

Hazardous Materials Storage and Transportation - Learning Outcomes

Proper Storage Practices for Hazardous Materials

Managing Segregation and Compatibility of Hazardous Materials

Emergency Preparedness for Hazardous Materials Storage

Transportation Regulations

Handling Hazardous Materials in Transit

Emergency Response Planning

Case Studies and Lessons Learned

Hazardous Materials Storage and Transportation - Lessons Summary

This module covers storing hazardous materials, segregation and compatibility, and developing emergency response plans. Learn DOT regulations, proper labelling, packaging, and security measures for transportation, best practices for loading/unloading and case studies.

Advanced Hazardous Materials Handling Techniques - Learning Outcomes

Decontamination Procedures

Confined Space Entry Protocols

Managing Hazardous Waste

Best Practices for Chemical Spill Response

Continuous Improvement in Hazardous Materials Handling

Advanced Hazardous Materials Handling Techniques - Lesson Summary

This module covers decontamination techniques to ensure health, safety, and regulatory compliance. Learn to manage decontamination zones, handle confined space hazards, and apply physical, chemical, thermal, and radiological decontamination. Develop skills in PPE selection, emergency response planning, and environmental protection.

Hazardous Materials Handling Mastery - Course Assessment

Gain expertise, ensure safety, and excel in hazardous materials handling with this comprehensive free online course.

Hazardous Materials Safety Specialist

This course covers the classification, legal compliance, and risk assessment of hazardous materials. It delves into communication standards, PPE usage, and storage guidelines. Transportation regulations and emergency response planning are also covered. Advanced techniques include decontamination, confined space entry, hazardous waste management, chemical spill response, and continuous improvement through safety audits and case studies.