Quiz 24/Ago/23

Polarization mode dispersion (PMD) is the dispersion caused by different speeds of two crossed polarization states of optical signals.

• True
• False

The attenuation of an optical fiber depends on absorption attenuation, scattering attenuation, and bending attenuation.

• True
• False

Which of the following technologies is the main difference between an open system and an integrated system?

• Wavelength conversion technology
• Optical amplification technology
• MuItiplexing/Demultiplexing technology
• Optical supervisory technology

Which of the following can be the center wavelengths of the pump sources in an EDFA?

• 980 nm
• 1510 nm
• 1480 nm
• 1310 nm

Which of the following fibers has the dispersion characteristics complying with the following description? The dispersion at 1310 nm is 0 and the typical dispersion coefficient around 1550 nm is 17 ps/nm.km.

• G.652
• G.653
• G.654
• G.655

Which of the following modulation technologies has the best performance in terms of wavelength stability?

• Direct modulation
• EA modulation
• M-Z modulation
• Indirect modulation

Which of the following are key WDM technologies?

• Light source technologies

• Supervisory technologies

• Optical amplifier technologies

• Optical multiplexing and demultiplexing technologies

Which of the following are the advantages of an erbium-doped fiber amplifier (EDFA)?

• High coupling efficiency

• High energy conversion efficiency

• Stable gain feature

• High gain and high output power