Optical Communication Practice Test 6

1. A high-impedance amplifier has an effective input resistance of 4MΩ. Find the maximum bandwidth that may be obtained without equalization if the total capacitance is 6 pF and total effective load resistance is 2MΩ.

2. __________ determines a higher transmission rate related to the gain of the APD device.

3. The properties of a bipolar transistor are superior to the FET.

4. How many types of noise are observed because of the spontaneous fluctuations in optical fiber communication systems?

5. _____________ refers to any spurious or undesired disturbances that mask the received signal in a communication system.

6. _______ emitter-base and collector-base junction capacitances is achieved by use of hetero-structure along with _________ base resistance.

7. How many amplifier configurations are frequently used in optional fiber communication receivers?

8. A digital optical fiber communication system requires a maximum bit-error-rate of 10^-9. Find the average number of photons detected in a time period for a given BER.

9. The minimum pulse energy needed to maintain a given bit-error-rate (BER) which any practical receiver must satisfy is known as ___________

10. How many receiver structures are used to obtain better receiver characteristics?