Optical Sources MCQs

Welcome to our comprehensive collection of Multiple Choice Questions (MCQs) on Optical Sources, 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 Sources 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 Sources mcq questions that explore various aspects of Optical Sources problems. Each MCQ is crafted to challenge your understanding of Optical Sources 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 Sources 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 Sources. 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 Sources knowledge to the test? Let's get started with our carefully curated MCQs!

Optical Sources MCQs | Page 16 of 18

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Q151.
In surface emitter LEDs, more advantage can be obtained by using ____________
Discuss
Answer: (c).DH structures
Q152.
Internal absorption in DH surface emitter Burros type LEDs is ____________
Discuss
Answer: (d).Very low
Discuss
Answer: (a).More coupled optical power
Q154.
A DH surface emitter LED has an emission area diameter of 60 ฮผm. Determine emission area of source.
Discuss
Answer: (d).2.826*10โปโน
Q155.
Estimate optical power coupled into fiber of DH SLED having emission area of 1.96*10โปโต, radiance of 40 W/rcm², numerical aperture of 0.2 and Fresnel reflection coefficient of 0.03 at index matched fiber surface.
Discuss
Answer: (d).9.551*10โปโต
Q156.
In a multimode fiber, much of light coupled in the fiber from an LED is ____________
Discuss
Answer: (c).Lost
Q157.
Determine the overall power conversion efficiency of lens coupled SLED having forward current of 20 mA and forward voltage of 2 V with 170 ฮผW of optical power launched into multimode step index fiber.
Discuss
Answer: (c).4.25*10โป³
Q158.
The overall power conversion efficiency of electrical lens coupled LED is 0.8% and power applied 0.0375 V. Determine optical power launched into fiber.
Discuss
Answer: (a).0.03
Discuss
Answer: (c).To reduce current spreading
Q160.
The InGaAsP is emitting LEDs are realized in terms of restricted are ____________
Discuss
Answer: (a).Length strip geometry