Answer / c.ramu

An optical fiber amplifier allows the amplification of a weak
Signal-Impulse in a noncentrosymmetric nonlinear medium (e.g.
BBO). In contrast to the previously mentioned amplifiers,
which are mostly used in telecommunication environments, this
type finds its main application in expanding the frequency
tunability of ultrafast solid-state lasers (e.g.
Ti:sapphire). By using a noncollinear interaction geometry
Optical Parametric Amplifiers are capable of extreme broad
amplification bandwidths.

1.what is the difference between snr and cnr?why cnr is used in satellite communication? 2.prove that power spectral density of gaussian noise os n/2

0 Answers  

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Which material is piezoelectric?

0 Answers   C DAC, CDAC,

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What is a sample and hold circuit? Where it is used?

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im an electronics and communication engineering..i have to attend an interview based on contract basis.i kindly request u to send all possible questions to my mail...its varsha.happy@rediffmail.com

0 Answers   BEL, Core, TCS,

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Define what is hole current?

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0 Answers   Siemens,

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2 Answers   TCS,

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how does op-amp work?

2 Answers   Bright Point,

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What is meant by pre-emphasis and de-emphasis?

24 Answers   BEL, BSF,

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Why is silicon preferred over germanium in the manufacture of semiconductor devices?

0 Answers  

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