Q. LED’s display good linearity.

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Q. Which behaviour may prove as a limitation for injection lasers and LED’s?

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Q. Optical output power from an LED is directly proportional to the device junction temperature.

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Q. _____________ from the LED is dependent on the effective minority carrier lifetime in the semiconductor material.

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Q. The _________ of the LED is twice that of the effective minority carrier lifetime.

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Q. The finite spectral width of the optical source causes ___________

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Q. The coherent emission from an injection laser has a line width of ________

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Q. Extinction ratio is denoted by symbol __________

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Q. The use of low impedance driving circuit may increase _____________

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Q. ____________ limits receiver sensitivity.

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Q. A ____________ performs the linear conversion of the received optical signal into an electric current.

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Q. __________ are provided to reduce distortion and to provide a suitable signal shape for the filter.

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Q. A _________ maximizes the received signal-to-noise ratio in the receiver circuitry.

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Q. ________ can be operated in three connections.

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Q. How many structures of pre-amplifiers exist?

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Q. What is the main factor contributing to the choice of the operational amplifier?

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Q. The multiplication factor for the APD varies with the device temperature.

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Q. How many categories of dynamic gain equalizers are available?

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Q. How many simultaneous channels can be provided in a band DGE(Dynamic gain equalizer)?

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Q. __________ is the unique property of the glass fiber.

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