Q. What is the abbreviation of HBT?

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Q. What type of receivers are used to provide wideband operation, low-noise operation?

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Q. ___________ circuits extends the dynamic range of the receiver.

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Q. The sensitivity of the low-impedance configuration is ____________

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Q. What is generally used to determine the receiver performance characteristics?

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Q. The __________ technique eliminates the thermal noise associated with the feedback resistor in the trans-impedance front end design.

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Q. The removal of the feedback resistor in the optical feedback technique allows reciever sensitivity of the order of _______________

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Q. The optical feedback technique is useful at low transmission rates.

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Q. How many types of optical amplifier technologies are available.

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Q. The optimum filter bandwidth is typically in the range ________________

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Q. For linear as well as in nonlinear mode _______________ are most important network elements.

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Q. The more advantages optical amplifier is ____________

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Q. ________________ cannot be used for wideband amplification.

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Q. ____________ is used preferably for channel selection in a WDM system.

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Q. For used in single-mode fiber __________ are used preferably.

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Q. Mostly ____________ are used in nonlinear applications.

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Q. _______________ is superior as compared to _________________

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Q. ______________ are operated at current beyond normal lasing threshold current, practically.

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Q. An uncoated FPA has peak gain wavelength 1.8 μm, mode spacing of 0.8 nm, and long active region of 300 v. Determine RI of active medium.

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Q. Determine the peak gain wavelength of uncoated FPA having mode spacing of 2 nm, and 250 μm long active region and R.I of 3.78.

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