# Optical Fiber Communication OFC 6th Sem Diploma May 2016 Paper

## Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  SECTION-A

#### Q1. Fill in the Blanks.Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  15×1=15

Â  Â  Â  Â I. The frequency range for optical fiber communication extends fromâ€¦â€¦â€¦â€¦â€¦â€¦…
Â  Â  Â  II. In optical fiber communication, repeaters are required at a distance ofâ€¦â€¦â€¦â€¦â€¦..
Â  Â  Â III. One micron = of an inch.
Â  Â  Â IV. The attenuation losses are measured in terms ofâ€¦â€¦â€¦â€¦â€¦â€¦…
Â  Â  Â V. Mie scattering losses always occur in direction.
Â  Â  VI. An optical light detector converts â€¦â€¦â€¦â€¦â€¦â€¦.signal into signal.
Â  Â  VII. The term LASER stands forâ€¦â€¦â€¦â€¦â€¦â€¦â€¦
Â  Â  VIII. The optical light detector is a part of â€¦â€¦â€¦â€¦â€¦â€¦â€¦section. i) SOA stands forâ€¦â€¦â€¦â€¦â€¦â€¦â€¦
Â  Â  Â IX. EDFA stands forâ€¦â€¦â€¦â€¦â€¦â€¦â€¦

## Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  SECTION-B

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

1. What do you mean by optical fiber communication?
2. Give the basic construction detail of an optical fiber cable.
3. What do you mean by an optical light source? How many types of optical light source are there.
4. Explain in brief about: 1. PIN diode 2. APD
5. What is the operational difference between LED and LASER?
6. Explain the basic operation of optical amplifier.
7. Explain the basic principle of RAMAN amplifier?

## Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â SECTION-C

#### Q3. Attempt any three questions.Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â 3×10=3

1. Â Explain in detail the various applications of optical fiber communication.Â  Â  Â  Â  Â  Â  Â
2. Explain scattering losses in detail. How many types of scattering losses are there? How we can reduce scattering losses?
3. Draw and explain the functional block diagram of transmitter & receiver used in optical fiber communication.

## Optical Fiber Communication OFC 6th Sem Diploma May 2017 Paper

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

The frequency range for optical fiber communication extends from â€¦â€¦â€¦â€¦â€¦â€¦…
Â  Â  Â Â

In optical fiber communication, repeaters are required at a distance ofâ€¦â€¦â€¦â€¦â€¦..
Â  Â  Â

One micron = _____ of an inch.
Â  Â  Â

The attenuation losses are measured in terms ofâ€¦â€¦â€¦â€¦â€¦â€¦…
Â  Â  Â

Mie scattering losses always occur in direction.
Â  Â  VI.

An optical light detector converts â€¦â€¦â€¦â€¦â€¦â€¦.signal into signal.
Â  Â Â

The term LASER stands for â€¦â€¦â€¦â€¦â€¦â€¦
Â  Â Â

The optical light detector is a part of â€¦â€¦â€¦â€¦â€¦â€¦section. i) SOA stands for â€¦â€¦â€¦â€¦

EDFA stands for ______

### Section B :Optical Fiber Communication OFC 6th Sem Diploma May 2016 Paper

Optical fiber communication

Â

Basic construction detail of an optical fiber cable.

Â

optical light source

Types of optical light sourceÂ

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Â 1. PIN diode

2. APD

Â

Difference between LED and LASER

Â

Basic operation of optical amplifier.

Â

Principle of RAMAN amplifier

## Optical Fiber Communication OFC 6th Sem Diploma May 2016 Paper

### Section c :-Optical Fiber Communication OFC 6th Sem Diploma May 2016 Paper

Various applications of optical fiber communication.Â  Â

scattering lossesÂ

Types of scattering lossesÂ

Reduce scattering losses?

Â

Block diagram of optical fiber communication transmitter & receiver

Â

SOA Amplifier