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Optical Fiber Communication OFC 6th Sem EEE/ECE Feb 2021 Diploma Paper

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Optical Fiber Communication OFC 6th Sem Diploma Feb 2021 Paper

                                SECTION-A

Q2. Attempt any Three questions.                                                                    5×6=30

i. List the advantages and disadvantages of Optical fiber communication.
ii. Explain the principle of total internal refraction.
iii. Compare single mode fiber and multimode fiber.
iv. Difference between macro and micro bending losses.
v. What are the properties of good connector?
vi. What is the need of joining fibers and precautions to be taken while joining?
vii. What is the principle of light emitting diode? Explain briefly.
viii. Write short note on Raman amplifier.

                                     SECTION-C

Q3. Attempt any one question.                                                       1×10=10

a. Explain construction and working of Avalanche photodiode (APD) with diagram.
b. What is optical power budgeting. How it is helpful in designing fiber optical system. Explain in detail.
c. Explain the construction and working principle of laser diode with neat diagram.
d. Write a short note on i) Dispersion in fiber optics ii) Wavelength division multiplexing

Optical Fiber Communication OFC 6th Sem Diploma Feb 2021 Paper

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Section a FILL IN THE BLANKS Optical Fiber Communication OFC 6th Sem Diploma May 2015 Paper

The number of bits transmitted per second over a channel is called _______.

The number of bits transmitted per second over a channel is called          .

 

The optical communication frequency is ________

The optical communication frequency is ______ 

 

The principle of light propagation in optical fibre is based on _______

The principle of light propagation in optical fibre is based on _____

 

LASER stands for  ___________.

LASER stands for 

Dark current is defined as ___________

Dark current is defined as

 

LASER exhibits ___________

LASER exhibits

 

In a graded index fiber the refractive index _____ 

In a graded index fiber the refractive index _____ 

 

The optical fiber structure consists of basically three parts __________

The optical fiber structure consists of basically three parts

 

The process of extracting mineral from the earth is known as ______.

Single mode fibers support only _____ mode of

 

The unit of Dispersion is _________

The unit of Dispersion is_______ 

 

VCSEL stands for _________.

VCSEL stands for

 

Johnson noise is due to _________.

Johnson noise is due to _______

 

A photodiode is used in _________

A photodiode is used in _ ___

DWDM stands for_____ 

DWDM stands for_____ 

 

The heart of an optical receiver is the _________

The heart of an optical receiver is the _________

Optical Fiber Communication OFC 6th Sem Diploma May 2015 Solved Paper Click Here

Section B :Optical Fiber Communication OFC 6th Sem Diploma Feb 2021 Paper

Define: Critical Angle, Snell’s Law ?

i. List the advantages and disadvantages of Optical fiber communication.
ii. Explain the principle of total internal refraction.
iii. Compare single mode fiber and multimode fiber.
iv. Difference between macro and micro bending losses.
v. What are the properties of good connector?
vi. What is the need of joining fibers and precautions to be taken while joining?
vii. What is the principle of light emitting diode? Explain briefly.
viii. Write short note on Raman amplifier.

What are Step Index and graded index Fibres ?

Step Index and graded index Fibres 

 

Discuss the characteristics of light used in Optical Communication ?

Characteristics of light used in Optical Communication 

Draw the block diagram of an Optical Receiver

Block diagram of an Optical Receiver

 

Describe the different types of functional Amplifiers.

Different types of functional Amplifiers.

 

What is Splicing? Explain any two techniques of Splicing ?

What is Splicing

Two Techniques of Splicing 

 

List a few applications of Optical Communication ?

Applications of Optical Communication 

List a few applications of Optical Communication ?

Few applications of Optical Communication 

Optical Fiber Communication OFC 6th Sem Diploma Feb 2021 Paper Click Here

Optical Fiber Communication OFC 6th Sem Diploma Feb 2021 Paper

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Section c :-Optical Fiber Communication OFC 6th Sem Diploma Feb 2021 Paper

Explain construction and working of Avalanche photodiode (APD) with diagram.

Construction and working of Avalanche photodiode (APD) with diagram.

What is optical power budgeting. How it is helpful in designing fiber optical system.

Optical power budgeting. How it is helpful in designing fiber optical system. 

Explain the construction and working principle of laser diode with neat diagram.

working principle of laser diode with neat diagram.

Write a short note on i) Dispersion in fiber optics ii) Wavelength division multiplexing

 i) Dispersion in fiber optics ii) Wavelength division multiplexing

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