Download Previous Year Diploma Paper of Optical Fiber Communication OFC 6th Sem Diploma Dec 2018 Paper
Optical Fiber Communication OFC 6th Sem Diploma Dec 2018 Paper
Q1. Do as directed. 15×1=15
a. The optical power budget is usually expressed in .
b. The unit of dispersion is .
c. The refractive index of multimode fiber changes .
d. The pre-amplifier are used to provide small gain (T/F).
e. SLED Stands for .
f. Snell’s law states that .
g. __________ tells us about the information carrying capacity of the channel.
h. Semiconductor LD’s emits coherent light (T/F).
i. MFD stands for .
j. EDFA stands for
Q2. Attempt any five questions. 5×6=30
i. Explain avalanche photodiode with suitable diagram.
ii. Define Total Internal Reflection (TIR)? How it is useful in optical fiber communication?
iii. Write advantages of optical fiber communication.
iv. Explain the basic structure of an optical fiber?
v. Explain the principle of light penetration in optical fiber cable.
vi. What are the difference between single mode and multi mode fiber?
vii. Write short note on :
a) Raman Scattering b) Absorption loss
viii. What is dispersion? What are the different types of dispersion?
Q3. Attempt any three questions. 3×10=30
a. What do you mean by optical light source? Explain different types of optical sources.
b. Draw and explain block diagram of optical fiber communication link.
c. Define optical amplifiers. What are the different types of optical amplifiers? Explain briefly.
d. Write Short notes on the following. (any two)
i. Stimulated emission
ii. Optical detectors
iii. SOA applications
The number of bits transmitted per second over a channel is called .
The optical communication frequency is ______
The principle of light propagation in optical fibre is based on _____
LASER stands for
Dark current is defined as
In a graded index fiber the refractive index _____
The optical fiber structure consists of basically three parts
Single mode fibers support only _____ mode of
The unit of Dispersion is_______
VCSEL stands for
Johnson noise is due to _______
A photodiode is used in _ ___
DWDM stands for_____
The heart of an optical receiver is the _________
Step Index and graded index Fibres
Characteristics of light used in Optical Communication
Block diagram of an Optical Receiver
Different types of functional Amplifiers.
What is Splicing
Two Techniques of Splicing
Applications of Optical Communication
Few applications of Optical Communication
Optical Fiber Communication OFC 6th Sem Diploma May 2015 Paper
Advantages and disadvantages of Optical Fiber Communication.
Types of LED and its structures.
Optical Power Budgeting
Need of an Optical Amplifier
Discuss SOA Amplifier
Different types of losses in Optical Fibre Communication.
short notes on (any two)
- Effect of dispersion on data Rate
3. Historical perspective of Optical Communication