Optical Detectors MCQs

Welcome to our comprehensive collection of Multiple Choice Questions (MCQs) on Optical Detectors, a fundamental topic in the field of Optical Communication. Whether you're preparing for competitive exams, honing your problem-solving skills, or simply looking to enhance your abilities in this field, our Optical Detectors MCQs are designed to help you grasp the core concepts and excel in solving problems.

In this section, you'll find a wide range of Optical Detectors mcq questions that explore various aspects of Optical Detectors problems. Each MCQ is crafted to challenge your understanding of Optical Detectors principles, enabling you to refine your problem-solving techniques. Whether you're a student aiming to ace Optical Communication tests, a job seeker preparing for interviews, or someone simply interested in sharpening their skills, our Optical Detectors MCQs are your pathway to success in mastering this essential Optical Communication topic.

Note: Each of the following question comes with multiple answer choices. Select the most appropriate option and test your understanding of Optical Detectors. You can click on an option to test your knowledge before viewing the solution for a MCQ. Happy learning!

So, are you ready to put your Optical Detectors knowledge to the test? Let's get started with our carefully curated MCQs!

Optical Detectors MCQs | Page 10 of 11

Q91.
A ________ is created by hetero-junction at collector-base junction.
Discuss
Answer: (a).Potential barrier
Q92.
Phototransistors based on hetero-junction using _________ material are known as waveguide phototransistors.
Discuss
Answer: (c).InGaAsP/ InAlAs
Q93.
A phototransistor has collector current of 18 mA, incident optical power of 128 μW with a wavelength of 1.24 μm. Determine an optical gain.
Discuss
Answer: (a).1.407 *10²
Q94.
For a phototransistor having gain of 116.5, wavelength of 1.28 μm, optical power 123 μW. Determine collector current.
Discuss
Answer: (b).0.0149 mA
Q95.
The detection mechanism in the ____________ photo-detector includes inter sub-band transitions.
Discuss
Answer: (a).Dwell
Q96.
Which of the following is the difference between the n-p-n and conventional bipolar transistor?
Discuss
Answer: (c).Unconnected base
Q97.
The n-p-n hetero-junction phototransistor is grown using ______________
Discuss
Answer: (b).Liquid-phase epistaxis
Q98.
The _____________ at emitter-base junction gives good emitter base injection efficiency.
Discuss
Answer: (d).Hetero-junction
Q99.
Waveguide phototransistors utilize a ___________ waveguide layer under the _________ transistor region.
Discuss
Answer: (b).Passive, active
Q100.
What is the main benefit of the waveguide structure over conventional hetero-junction phototransistor?
Discuss
Answer: (c).Increased photocurrent, responsivity
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