PTInternational LLCSemiconductor Training


Fiber Optics


Understanding fiber optics communication

This course provides the foundation essential to developing, debugging, characterizing, and manufacturing cutting edge optic fiber components and networks. Based on the science that enables the technology, the course provides an accurate intuitive grasp of fiber optics. The passive network components, like filters, multiplexers/demultiplexers, couplers, isolators, etc, are all based on the concepts of coherence and interference described with examples like the behavior of waves in a pond. For active devices like transmitters, modulators, receivers, and amplifiers, atomic transitions – spontaneous emission, stimulated emission, Raman scattering and absorption – are presented in a conceptual way that is simple but accurate. The problems caused by chromatic and Polarization Mode Dispersion (PMD) are described by showing light shining through a prism, on the one hand, and through sunglasses, on the other. In every example, components are put in the context of a wide area Dense Wavelength Division Multiplex (DWDM) network.  

What the Course Covers:

  • Part 1 - Overview The science in four easy pieces
  • High speed, long distance networking
  • How information is carried by optic fibers
  • The 40,000 foot view of a Dense Wavelength Division Multiplexing (DWDM)
  • system
  • Part 2 – Optic fibers Fiber structure
  • How fibers carry information
  • The index of refraction and Total internal refraction
  • Modal dispersion and multimode fibers
  • Couplers and splitters
  • Part 3 – Light Properties of electromagnetic waves
  • Recipe for generating light Introduction to polarization and coherence
  • Part 4 – Passive components and test Interference
  • Measuring wavelength
  • Filters: the Fabry-Perot Etalon, thin films, FBGs, bandpass and chirped filters, interferometric filters, AWGs
  • Polarization and the isolator Add/drop nodes and circulators
  • Optical spectrum analyzers
  • Characterization: insertion loss, return loss, polarization dependent loss
  • Part 5 – Signal transmission, modulation and reception
  • Modulation: encoding data into light pulses
  • Direct and indirect modulation techniques – Mach-Zehnder, electro-absorption
  • Generation of light Spontaneous emission and LEDs
  • Stimulated emission and lasers
  • Lasers: DFB, VCSEL, tunable Light detectors – PIN diodes Noise, sensitivity, and modulation bandwidth
  • Active component characterization: linewidth, chirp/FM, power, relative intensity noise, sensitivity, modulation bandwidth, source and receiver responsivity
  • Part 6 – Optical amplifiers and DWDM
  • Signal loss in fibers
  • Raman scattering and the Erbium Doped Fiber Amplifier (EDFA)
  • Semiconductor and Raman optical amplifiers
  • DWDM signals and design Characterization of DWDM networks: channel gain, noise figure, tilt, flatness, spacing Issues that constrain
  • DWDM networks
  • Part 7 – Dispersion
  • Wavelength and polarization dependence of the index of refraction
  • Chromatic dispersion, its characterization and compensation
  • Polarization Mode Dispersion (PMD)
  • Maximum fiber lengths tolerable to PMD
  • Part 8 – Analysis of fiber optic networks
  • Optical Time Domain Reflectometry (OTDR)
  • Pulse parameters, Bit Error Ratio, eye diagram analysis, power and extinction ratio Jitter in Optical networks – SONET/SDH



Who Should Attend:

Any one wanting to understand fiber optics communication


Next Schedule Date and Location:

Only offer at clients' site


$8,900 USD  for up to 14 students

Contact us if interested in an on site training program