Optical Fiber Communication OFC 6th Sem Diploma May 2019 Paper

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Optical Fiber Communication OFC 6th Sem Diploma May 2019 Paper

SECTION-A

Q1. Do as directed. 15×1=15

a. LASER stands for Light Amplification and Stimulated Emission of Radiation.
b. An optical detector converts Light signal to Electrical signal.
c. The refractive index of the core is less than cladding. (T/F) False
d. Define critical angle.
e. SLED stands for Surface Light Emitting Diode .
f. V-groove splice is ______ a type of splice.
g. Numerical aperture is the light gathering capability of optical fiber. (T/F) True
h. Dispersion causes light pulse Spread
i. Define Snell’s Law.
j. The wavelength of optical fiber communication is .
k. Rayleigh scattering always occur in reverse direction. (T/F)
l. TWA stands for
m. An LED is a coherent source of light. (T/F) False
n. EDFA stands for Erbium-Doped Fiber Amplifier .
o. Define dark current.

SECTION-B

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

i. List the advantages and disadvantages of optical fiber communication.
ii. Write a short note on TIR.
iii. What is numerical aperture? What is its significance in fiber optics?
iv. What do you mean by optical splicing? Explain fusion splicing method.
v. Explain optical power budgeting.
vi. Write a short note on the following.
a. Spontaneous Emission
b. Stimulated Emission
vii. What are the different modes of propagation used in optical fiber?

SECTION-C

Q3. Attempt any three questions. 3×10=30

a. Discuss the elements of Optical fiber communication in detail.
b. Explain dispersion and its types in detail.
c. Explain the construction and working of SOA in detail.
d. Write note on (any two)
i. Wavelength Division Multiplexing
ii. Critical Angle
iii. Noise in optical fiber

Optical Fiber Communication OFC 6th Sem Diploma May 2019 Paper

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Section a FILL IN THE BLANKS Optical Fiber Communication OFC 6th Sem Diploma May 2019 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 _____

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_____

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 May 2015 Paper

Define: Critical Angle, Snell’s Law ?

Critical Angle

Snell’s Law

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 May 2015 Paper Click Here

Optical Fiber Communication OFC 6th Sem Diploma May 2015 Paper

Get Started https://www.youtube.com/watch?v=UHX6f8TIvX8https://www.youtube.com/watch?v=M_RR6LVICp0https://www.youtube.com/watch?v=mV41CMWonN4https://www.youtube.com/watch?v=s0LVPE0Q3LE&list=PLA9Q9SDZ781WXNAWit379A4CRLMvjGiUw&index=14&t=0s

Section c :-Optical Fiber Communication OFC 6th Sem Diploma May 2015 Paper

Discuss the elements of Optical fiber communication in detail.

Elements of Optical fiber communication in detail

Explain dispersion and its types in detail.

Dispersion and its types in detail.

Explain the construction and working of SOA in detail.

Construction and working of SOA in detail.

Write note on (any two)

i. Wavelength Division Multiplexing

i. Wavelength Division Multiplexing
r

ii. Critical Angle

iii. Noise in optical fiber

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