OCF: Q6

Which fiber profiles did we discuss in the lecture? Describe their characteristics, differences and advantages/disadvantages

What is described by the critical angle, the numerical aperture and the fractional index change?

Describe the characteristics of multipath dispersion? What is another name for this phenomenon? How does it limit the maximum symbol rate in an optical fiber?

Write down, name and describe the different Maxwell's equations

What does the material equation describe?

Describe the procedure to solve the Helmholtz equation for fiber modes. How does the solution of the spatial mode distribution look like?

Discuss what is meant by EH_{mn}, HE_{mn}, TE_{0n}, TM_{0n}, and LP_{mn} fiber mode nomenclatures

What does the V-parameter describe? What are the parameters one can play with to limit the number of modes propagating in a fiber? When does the fiber support only a single mode?

Please state the Nonlinear Schrödinger Equation and explain its components

Explain the term group velocity

Explain the term group velocity dispersion

Explain the term dispersion slope

Why is the dispersion parameter D_d preferable over the group velocity dispersion and how are they related to each other? How do you interpret the dimension ps/nm/km?

What is the origin of dispersion?

How is dispersion compensation achieved?

What is physical reason for polarization mode dispersion (PMD) and polad polarization dependent loss (PDL)?

Which attenuating effects limit the bandwidth of an optical fiber?