Q. An SOA has mode number of 2.6, spontaneous emission factor of 4, optical bandwidth of 1 THz. Determine noise power spectral density.

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Q. An SOA has noise power spectral density of 1.18 mW, spontaneous emission factor of 4, optical bandwidth of 1.5 THz. Determine mode number.

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Q. The spectral dependence on gain is always constant.

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Q. ESA ________ the pumping efficiency of device.

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Q. Signal amplification is obtained in ____________

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Q. It is possible to construct a single rare-earth-doped fiber amplifier which provides amplification for all-bands.

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Q. _______________ is constructed using erbium-doped glass.

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Q. ____________ uses Er³⁺-doped erbium glass.

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Q. The most advantageous amplification is ____________

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Q. _________ is also known as lump Raman amplifiers.

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Q. _______________ extends the pump power into transmission line fiber.

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Q. _____________ are called hybrid Raman amplifier.

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Q. In ___________ the ASE contributes most of noise.

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Q. In _____________ Rayleigh scattering can be reduced.

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Q. Compute the fiber nonlinear coefficient of a parametric optical amplifier having parametric peak gain of 63.6 dB, signal power of 1.6W, length 520.

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Q. Compute signal power for parametric amplifier having length of 500, nonlinear gain coefficient 12.6×10⁻³ W⁻¹km⁻¹ and parametric peak gain of 63.9 dB.

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Q. Compute the gain of parametric amplifier having signal power of 1.6 W, length of 500, non-linear coefficient of 10.19 * 10⁻³ W⁻¹km⁻¹.

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Q. ___________________ is defined as a process by which the wavelength of the transmitted signal is changed without altering the data carried by the signal.

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Q. The device which is used to perform wavelength conversion is called as ___________

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Q. A wavelength converter is termed as _______ if the converted wavelength is longer than the original signal wavelength.

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