High Performance Receivers

Optical Communications

This set of Optical Communications Multiple Choice Questions & Answers (MCQs) focuses on “High Performance Receivers”.

1. How many design considerations are considered while determining the receiver performance?
a) Three
b) Two
c) One
d) Four

2. FET preamplifiers provide higher sensitivity than the Si-bipolar device.
a) True
b) False

3. What is the abbreviation of HBT?
a) Homo-junction unipolar transistor
b) Homo-junction bipolar transistor
c) Hetero-junction bipolar transistor
d) Hetero-Bandwidth transcendence

4. What type of receivers are used to provide wideband operation, low-noise operation?
a) APD optical receivers
b) Optoelectronic integrated circuits (OEICs)
c) MESFET receivers
d) Trans-impedance front-end receivers

5. ___________ circuits extends the dynamic range of the receiver.
a) Monolithic
b) Trans-impedance
c) Automatic Error Control (AEC)
d) Automatic Gain Control (AGC)

6. The sensitivity of the low-impedance configuration is ____________
a) Good
b) Poor
c) Great
d) Same as that of high-impedance configuration

7. What is generally used to determine the receiver performance characteristics?
a) Noise
b) Resistor
c) Dynamic range & sensitivity characteristics
d) Impedance

8. The __________ technique eliminates the thermal noise associated with the feedback resistor in the trans-impedance front end design.
a) Compensation
b) Resonating impedance
c) Electromagnetic
d) Optical feedback

9. The removal of the feedback resistor in the optical feedback technique allows reciever sensitivity of the order of _______________
a) -54 dBm at 2Mbit/sec
b) -12 dBm at 2Mbit/sec
c) -64 dBm at 2Mbit/sec
d) -72 dBm at 2Mbit/sec

10. The optical feedback technique is useful at low transmission rates.
a) True
b) False

11. How many types of optical amplifier technologies are available.
a) One
b) Three
c) Four
d) Two

12. The optimum filter bandwidth is typically in the range ________________
a) 0.1 to 0.3 nm
b) 0.5 to 3 nm
c) 0.1 to 0.3 μm
d) 0.5 to 3 μm

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