Scribd
Upload
28 views27 pages

Turowicz 6

Chromatic dispersion is a phenomenon in fiber optics where different wavelengths of light travel through the fiber at different speeds, causing signal spreading. It can increase the bit error rate of transmitted signals. There are different types of dispersion such as chromatic dispersion. Chromatic dispersion can be compensated for through the use of dispersion compensation fibers, Bragg gratings, or by decreasing the impulse spectral width during transmission. Proper management of chromatic dispersion is important for fiber optic systems.

Uploaded by

Ahmet Hadziahmetovic
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as PPT, PDF, TXT or read online on Scribd
28 views27 pages

Turowicz 6

Chromatic dispersion is a phenomenon in fiber optics where different wavelengths of light travel through the fiber at different speeds, causing signal spreading. It can increase the bit error rate of transmitted signals. There are different types of dispersion such as chromatic dispersion. Chromatic dispersion can be compensated for through the use of dispersion compensation fibers, Bragg gratings, or by decreasing the impulse spectral width during transmission. Proper management of chromatic dispersion is important for fiber optic systems.

Uploaded by

Ahmet Hadziahmetovic
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as PPT, PDF, TXT or read online on Scribd
You are on page 1/ 27

Chromatic Dispersion

http://www.porta-optica.org
What is dispersion?
Effects of dispersion
Overview
Differential delay
Increased Bit Error Rate
Types of dispersion
Types of dispersion
Chromatic Dispersion Definition
Chromatic Dispersion Definition
The cause of
Chromatic Dispersion
Dispersion by design
Fibers type
Optical Fibers: Attenuation &
Dispersion
Why is measuring Dispersion so
important?
Dispersion compensation
Dispersion compensation for
DWDM
CD management
Prevention:
1. Compensation:
- Fibers DCF & RDF,
- Bragg Gratings technique.

2. Decreasing impulse spectral width:


- external modulation,
- pulse shaping of current modulation.

3. Soliton transmission.
CD compensation

D1L1 - DkLk=0,

Dispersion [ps/nm]
1000

800

DCF
600 NZDSF

400

200

200 400 600 800 L [km]


Managing Chromatic Dispersion
Dispersion Compensation Method
Bragg gratings
Dispersion Compensation Method
Bragg gratings
Fiber Dispersion Characteristics
Dispersion compensation for
DWDM
References

Reichle & De-Massari

http://www.porta-optica.org

You might also like