Exam 15: Key Concepts in Laser and Optical Fiber Communication Technology

Reducing delay time and ____________ are of high importance for lasers.

In multimode lasers the optical feedback from unnecessary external reflections affecting stability of frequency and intensity is

_________________ laser can be produced when a coupler section is introduced between the amplifier and phase sections of a structure

Which of the following co-dopant is not employed by neodymium and erbium doped silica fiber lasers?

A particular characteristic or parameter that occurs during analog transmission of injection lasers is

_______________ occurs as a result of the change in lasing frequency with gain

Intensity of output from semiconductor injection lasers leading to optical intensity noise is due to

When a current pulse reaches a laser having parasitic capacitance after the initial delay time, that pulse will

In a three level system, the threshold power decreases inversely with the length of the fiber gain medium.

Which of the following is not a property of Nd: YAG laser that enables its use as an optical fiber communication source?

Laser cavity length can be extended by

Reduction in the number of modes in multimode fiber increases the mode partition noise.

The rare-earth-doped fiber lasers have spectral line-width in the range of _________________

The behavior of laser occurring when current is increased above threshold particularly is

What is the purpose of wavelength dispersive element is LEC lasers?

Which of these factors are critical in affecting the system performance in the case of coherent optical fiber transmission?

Y3Al5 O12 Is a molecular formula for _____________

The phenomenon occurring when the electron and photon population within the structure comes into equilibrium is known as

In Fabry-perot laser, the lower threshold is obtained by

Which devices are used to modulate the external cavity in order to achieve the higher switching speeds?