Development of Laser Range Finder Using 1550 nm Wavelength

This thesis presents a design for measuring distance using infra light at 1550nm. A lot of experience has been gained in amplifying optical signal at 1550nm, however, another kind of range finder is being presented. The wavelength of 1550nm is selected because it is not harmful to the human eyes; it...

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Main Author:	Moloud Abufela, Basm Altaher
Format:	Thesis
Language:	English English
Published:	2006
Subjects:	Optical range finders - Case studies Wavelength
Online Access:	http://psasir.upm.edu.my/id/eprint/624/1/600418_fk_2007_7_abstrak_je__dh_pdf_.pdf
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spelling	my-upm-ir.6242013-05-27T06:49:45Z Development of Laser Range Finder Using 1550 nm Wavelength 2006-10 Moloud Abufela, Basm Altaher This thesis presents a design for measuring distance using infra light at 1550nm. A lot of experience has been gained in amplifying optical signal at 1550nm, however, another kind of range finder is being presented. The wavelength of 1550nm is selected because it is not harmful to the human eyes; it has less atmospheric absorption which makes it performs better in free space. A 1550 nm has less attenuation in free space than 902 nm or 1064 nm. 1550 nm is also safer than 902 nm and 1064 nm laser. In our system a 1550 nm, pulsed laser is used. Pulsed power is amplified by Erbium Doped Fiber Amplifier (EDFA), which is pumped by 1480nm, getting a 53.15mW 1550nm signal laser. A portion of the power after passing through the 1550 nm coupler triggers the counter to start the count. Optical pulse is collimated before it propagates in a free space. The receiver detects the laser power reflected from the target. The reflected amplified signal is used to stop the counter. The number of counts is proportional to time of flight. The resulting distance is calculated form the time of flight measured by the range finder. Since distance can be calculated this tends that, the velocity can be calculated. From the results, it is observed that the error is due to the time delay of the photodetector, and using EDFA gave an advantage of power control. Optical range finders - Case studies Wavelength 2006-10 Thesis http://psasir.upm.edu.my/id/eprint/624/ http://psasir.upm.edu.my/id/eprint/624/1/600418_fk_2007_7_abstrak_je__dh_pdf_.pdf application/pdf en public masters Universiti Putra Malaysia Optical range finders - Case studies Wavelength Faculty of Engineering English
institution	Universiti Putra Malaysia
collection	PSAS Institutional Repository
language	English English
topic	Optical range finders - Case studies Wavelength
spellingShingle	Optical range finders - Case studies Wavelength Moloud Abufela, Basm Altaher Development of Laser Range Finder Using 1550 nm Wavelength
description	This thesis presents a design for measuring distance using infra light at 1550nm. A lot of experience has been gained in amplifying optical signal at 1550nm, however, another kind of range finder is being presented. The wavelength of 1550nm is selected because it is not harmful to the human eyes; it has less atmospheric absorption which makes it performs better in free space. A 1550 nm has less attenuation in free space than 902 nm or 1064 nm. 1550 nm is also safer than 902 nm and 1064 nm laser. In our system a 1550 nm, pulsed laser is used. Pulsed power is amplified by Erbium Doped Fiber Amplifier (EDFA), which is pumped by 1480nm, getting a 53.15mW 1550nm signal laser. A portion of the power after passing through the 1550 nm coupler triggers the counter to start the count. Optical pulse is collimated before it propagates in a free space. The receiver detects the laser power reflected from the target. The reflected amplified signal is used to stop the counter. The number of counts is proportional to time of flight. The resulting distance is calculated form the time of flight measured by the range finder. Since distance can be calculated this tends that, the velocity can be calculated. From the results, it is observed that the error is due to the time delay of the photodetector, and using EDFA gave an advantage of power control.
format	Thesis
qualification_level	Master's degree
author	Moloud Abufela, Basm Altaher
author_facet	Moloud Abufela, Basm Altaher
author_sort	Moloud Abufela, Basm Altaher
title	Development of Laser Range Finder Using 1550 nm Wavelength
title_short	Development of Laser Range Finder Using 1550 nm Wavelength
title_full	Development of Laser Range Finder Using 1550 nm Wavelength
title_fullStr	Development of Laser Range Finder Using 1550 nm Wavelength
title_full_unstemmed	Development of Laser Range Finder Using 1550 nm Wavelength
title_sort	development of laser range finder using 1550 nm wavelength
granting_institution	Universiti Putra Malaysia
granting_department	Faculty of Engineering
publishDate	2006
url	http://psasir.upm.edu.my/id/eprint/624/1/600418_fk_2007_7_abstrak_je__dh_pdf_.pdf
_version_	1747810275590930432

Development of Laser Range Finder Using 1550 nm Wavelength

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