Fiber Optic Communications

Course Description

ETS2224C — Fiber Optic Communications is a 3-credit, combined lecture and laboratory course (indicated by the "C" lab suffix) within the Engineering Technologies > Specialty Engineering Technology taxonomy of Florida's Statewide Course Numbering System (SCNS). The course provides students with a comprehensive foundation in fiber optic theory, components, installation, testing, and maintenance. Emphasis is placed on both conceptual understanding of optical communications principles and the development of hands-on technical skills required for real-world fiber optic network work. Topics span inside plant (ISP) and outside plant (OSP) environments, industry standards, and emerging network architectures including FTTx and WDM systems.

Learning Outcomes

Required Outcomes

Upon successful completion of this course, students will be able to:

• Explain the fundamental principles of light propagation in optical fiber, including refraction, reflection, and total internal reflection.
• Identify and differentiate between single-mode and multimode fiber types, including step-index and graded-index designs, and select appropriate fiber for a given application.
• Identify common fiber optic connectors (SC, ST, LC, FC, MPO/MTP) and describe their characteristics, proper cleaning procedures, and inspection techniques using a fiber microscope.
• Fabricate fiber optic cable assemblies using both adhesive/polish (A/P) and pre-polished splice (PPS) connectorization methods.
• Perform fusion splicing and mechanical splicing of single-mode and multimode fibers to industry-accepted loss standards.
• Conduct insertion loss testing using an Optical Loss Test Set (OLTS) and apply FOTP-171 and related test procedures.
• Operate an Optical Time Domain Reflectometer (OTDR) to test, characterize, and troubleshoot installed fiber cable plants.
• Calculate and verify link/power loss budgets for fiber optic systems.
• Apply relevant industry standards including ANSI/TIA/EIA-568 and ANSI/TIA/EIA-526 series to installation and testing scenarios.
• Practice proper fiber optic safety procedures, including laser safety classifications and safe handling of glass fiber.
• Demonstrate cable installation techniques for both inside plant (ISP) and outside plant (OSP) environments, including conduit, aerial, and underground pathways.
• Troubleshoot and diagnose common fiber optic system faults using appropriate test equipment and systematic procedures.

Optional Outcomes

Depending on institutional focus and available lab resources, students may also:

• Describe Wavelength Division Multiplexing (WDM) and Dense WDM (DWDM) system architectures and their role in high-capacity networks.
• Explain the operation of optical amplifiers (e.g., Erbium-Doped Fiber Amplifiers — EDFAs) and their placement in long-haul links.
• Describe Fiber to the Home (FTTH) and Passive Optical Network (PON) architectures, including splitters and distribution components.
• Perform advanced fiber characterization measurements including chromatic dispersion (CD), polarization mode dispersion (PMD), and spectral attenuation testing.
• Analyze eye diagrams and interpret bit error rate (BER) measurements in digital fiber links.
• Design and document a complete fiber optic network installation from specifications through cable plant testing and sign-off.
• Explain VoIP transmission over fiber networks and understand convergence of digital communications services.

Major Topics

Required Topics

1. Introduction to Fiber Optic Communications
   • History and evolution of fiber optic technology
   • Overview of fiber optic applications: LAN, WAN, metropolitan area, and carrier networks
   • Advantages of fiber over copper: bandwidth, distance, immunity to EMI
   • Fiber optic safety: laser classifications, safe handling of glass fiber, chemical hazards
2. Principles of Light and Optical Propagation
   • Nature of light; wavelength, frequency, and the electromagnetic spectrum
   • Refraction, Snell's Law, and total internal reflection
   • Numerical aperture (NA) and acceptance cone
   • Attenuation mechanisms: absorption, scattering (Rayleigh), and bending losses
   • Dispersion: modal, chromatic, and polarization mode dispersion
3. Fiber Types and Cable Construction
   • Multimode fiber: step-index and graded-index; OM1/OM2/OM3/OM4/OM5 classifications
   • Single-mode fiber: OS1/OS2; standard and low-water-peak variants
   • Fiber cable construction: tight-buffered, loose-tube, ribbon, armored
   • Inside plant (ISP) vs. outside plant (OSP) cable designs
   • Bend-insensitive and specialty fiber types
4. Optical Sources and Detectors
   • Light sources: LEDs and laser diodes (Fabry-Perot, DFB, VCSEL)
   • Laser wavelength windows: 850 nm, 1310 nm, 1550 nm
   • Photodetectors: PIN photodiodes and avalanche photodiodes (APDs)
   • Transmitter and receiver performance characteristics
5. Fiber Optic Connectors and Passive Components
   • Connector types: SC, ST, LC, FC, MPO/MTP; keyed and non-keyed variants
   • Connector end-face geometry: PC, UPC, APC polishes
   • Splices, couplers, attenuators, and patch panels
   • Fiber inspection with microscopes; cleaning techniques and standards
6. Connectorization and Splicing — Laboratory
   • Adhesive/polish (A/P) connector termination on multimode fiber
   • Pre-polished splice (PPS) / no-epoxy connectors
   • Fusion splicing: fiber preparation, arc splicing, and splice protection
   • Mechanical splicing: installation and optimization with a Visual Fault Locator (VFL)
   • Placement of splices in splice trays and enclosures
7. Fiber Optic Testing and Measurements
   • Continuity testing with a Visual Fault Locator (VFL) and visual tracer
   • Insertion loss testing: OLTS procedures per FOTP-171 (single-ended) and OFSTP-14 (double-ended); reference methods A, B, and C
   • OTDR fundamentals: pulse width, dynamic range, dead zones, and trace interpretation
   • OTDR vs. insertion loss testing — when and why
   • Return loss (optical back reflection) testing
   • Link/power loss budget calculation and verification
8. Installation Practices and Industry Standards
   • Cable pathway design: conduit, cable tray, aerial, and direct-buried methods
   • Cable pulling techniques, bend radius requirements, and tensile limits
   • ANSI/TIA/EIA-568 structured cabling standards for optical fiber
   • ANSI/TIA/EIA-526 optical fiber measurement procedures
   • Documentation and as-built records for installed cable plants
9. Troubleshooting and System Maintenance
   • Systematic fault isolation methodology
   • Identifying and locating breaks, bad splices, and dirty connectors
   • Preventive maintenance schedules and inspection intervals

Optional Topics

• Wavelength Division Multiplexing (WDM and DWDM): system architecture, splitters, WDM modules, channel plans
• Optical Amplifiers: EDFA operation, noise figure, OSNR, and system impact
• FTTx and PON Networks: FTTH, FTTB, FTTD architectures; passive splitters; GPON and EPON standards
• Advanced Fiber Characterization: chromatic dispersion (CD), polarization mode dispersion (PMD), spectral attenuation testing
• Digital Transmission Analysis: eye diagrams, bit error rate (BER), OOK modulation, signal-to-noise ratio
• Metropolitan and Intelligent Highway Networks: fiber use in transportation infrastructure and smart city applications
• Convergence and VoIP: voice and data integration over fiber networks

Resources & Tools

Recommended Textbook

• FOA Reference Guide to Fiber Optics — Jim Hayes, Fiber Optic Association (FOA). The standard reference used in FOA-approved training programs.
• Supplementary student lab manual aligned to CFOT curriculum topics.

Laboratory Equipment

• Optical Loss Test Set (OLTS) — power source and optical power meter
• Optical Time Domain Reflectometer (OTDR)
• Visual Fault Locator (VFL) and visual tracer
• Fusion splicer(s) — single-fiber and optionally ribbon-capable
• Mechanical splice kits
• Fiber inspection microscopes and automated fiber inspection probes
• Connector termination kits (A/P and PPS types)
• Fiber strippers, cleavers, and cable preparation tools
• Splice trays, enclosures, and patch panels for cable plant assembly

Online and Industry Resources

• Fiber Optic Association (FOA) — thefoa.org: certification standards, curriculum requirements, and reference materials
• Fiber U — fiberu.org: free FOA online self-study courses, tutorials, and microcredentials
• TIA/EIA standards documents (via IHS Markit or ANSI webstore)
• NECA/FOA 301 Standard for Installing and Testing Fiber Optic Cables

Career Pathways

Completion of ETS2224C prepares students for entry-level and advancing roles in the rapidly growing fiber optic and telecommunications industry. Florida's ongoing broadband infrastructure expansion, smart city initiatives, and commercial construction activity generate strong regional demand for qualified fiber technicians.

• Fiber Optic Technician / Installer — ISP and OSP cable plant installation and termination
• Outside Plant (OSP) Technician — aerial, underground, and direct-buried network construction
• Network Infrastructure Technician — enterprise LAN/WAN cabling and data center connectivity
• Telecommunications Technician — carrier and broadband service provider networks
• FTTH/FTTx Field Technician — residential and commercial fiber-to-the-premises deployment
• Communications Systems Technician — government, defense, and intelligent transportation systems
• Field Test & Maintenance Technician — OTDR operation, insertion loss testing, and network certification

Students may also pursue further education in photonics, laser technology, or telecommunications engineering technology at the associate or baccalaureate level within the Florida College System or State University System.

Special Information

Certification Preparation

This course is designed to prepare students for industry-recognized certifications sanctioned by the Fiber Optic Association (FOA), which is recognized by the U.S. Department of Labor. Specifically:

• CFOT — Certified Fiber Optic Technician: The primary entry-level FOA certification. Curriculum covers all required knowledge, skills, and abilities (KSAs) for the CFOT exam, which consists of 100 questions with a 70% passing threshold. Students who pass both the written exam and hands-on performance assessments are awarded CFOT certification through the FOA.
• CFOT as a prerequisite: CFOT certification earned through this course fulfills the prerequisite for all FOA Specialist (CFOS) certifications, including CFOS/S (Splicing), CFOS/T (Testing & Maintenance), CFOS/O (Outside Plant), CFOS/H (FTTH/PON), and CFOS/C (Connectors).
• Additional certification exam fees may apply. Students should confirm current FOA exam fee schedules with their instructor.

Lab-Intensive Format

The "C" suffix in ETS2224C designates a combined lecture and laboratory course. A significant portion of contact hours — typically 50% or more — is devoted to hands-on laboratory exercises aligned to FOA CFOT lab requirements, including connector termination, fusion and mechanical splicing, OTDR operation, and insertion loss testing. Students should be prepared to work with delicate glass fiber materials and precision test equipment throughout the term.