Simulation of dual fibre Bragg gratings as a fabry-perot tunable filter

A Fabry-Perot Bragg Gratings (FP-BG) is developed by using two uniform fibre Bragg gratings (FBG) system. The objective of this research is to simulate single, dual FBGs and fabricate single FBG by using phase mask writing with a UV KrF excimer laser. Three single FBGs with Bragg wavelength of 1551....

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Main Author:	Md. Rashid, Siti Nafisah
Format:	Thesis
Language:	English
Published:	2010
Subjects:	QC Physics
Online Access:	http://eprints.utm.my/id/eprint/12342/6/SitiNafisahMdMFS2010.pdf
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id	my-utm-ep.12342
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spelling	my-utm-ep.123422017-09-13T03:15:50Z Simulation of dual fibre Bragg gratings as a fabry-perot tunable filter 2010 Md. Rashid, Siti Nafisah QC Physics A Fabry-Perot Bragg Gratings (FP-BG) is developed by using two uniform fibre Bragg gratings (FBG) system. The objective of this research is to simulate single, dual FBGs and fabricate single FBG by using phase mask writing with a UV KrF excimer laser. Three single FBGs with Bragg wavelength of 1551.09 nm, 1551.29 nm and 1551.66 nm have been fabricated with reflectivity values of 30.2%, 78.1% and 44.7% respectively. FBG’s with reflectivity value of 78.1% are categorized as good and strong FBG, since its reflectivity value is more than 50%. Some simulation works were also executed in this research to generate the transmission spectrum of single and dual FBGs. For single FBG, the transmission spectra for different values of grating lengths and reflectivities have been studied. Results showed that the transmission spectra of single FBG becomes wider if the grating produced is short, and longer when the reflectivity value is increased. For dual FBGs, simulations were performed by varying the separation distance between the two FBGs. The separation distance was varied from 0.5 cm to 5.5 cm, with an increment of 0.5 cm. The result showed that any increase of the separation distance led to an increase in the number of maximum transmission peaks of dual FBGs, due to the absorption phenomenon. Only selected wavelengths with certain frequencies were allowed to transmit at the fibre’s end and the dual FBGs performed acted as a Fabry-Perot filter. This new configuration of FP filter exhibited similar behaviours as the conventional FP etalon, in which the parameters of free spectral range (FSR), full-width-half-maximum (FWHM) and finesse can be obtained from the transmission profiles. 2010 Thesis http://eprints.utm.my/id/eprint/12342/ http://eprints.utm.my/id/eprint/12342/6/SitiNafisahMdMFS2010.pdf application/pdf en public masters Universiti Teknologi Malaysia, Faculty of Science Faculty of Science
institution	Universiti Teknologi Malaysia
collection	UTM Institutional Repository
language	English
topic	QC Physics
spellingShingle	QC Physics Md. Rashid, Siti Nafisah Simulation of dual fibre Bragg gratings as a fabry-perot tunable filter
description	A Fabry-Perot Bragg Gratings (FP-BG) is developed by using two uniform fibre Bragg gratings (FBG) system. The objective of this research is to simulate single, dual FBGs and fabricate single FBG by using phase mask writing with a UV KrF excimer laser. Three single FBGs with Bragg wavelength of 1551.09 nm, 1551.29 nm and 1551.66 nm have been fabricated with reflectivity values of 30.2%, 78.1% and 44.7% respectively. FBG’s with reflectivity value of 78.1% are categorized as good and strong FBG, since its reflectivity value is more than 50%. Some simulation works were also executed in this research to generate the transmission spectrum of single and dual FBGs. For single FBG, the transmission spectra for different values of grating lengths and reflectivities have been studied. Results showed that the transmission spectra of single FBG becomes wider if the grating produced is short, and longer when the reflectivity value is increased. For dual FBGs, simulations were performed by varying the separation distance between the two FBGs. The separation distance was varied from 0.5 cm to 5.5 cm, with an increment of 0.5 cm. The result showed that any increase of the separation distance led to an increase in the number of maximum transmission peaks of dual FBGs, due to the absorption phenomenon. Only selected wavelengths with certain frequencies were allowed to transmit at the fibre’s end and the dual FBGs performed acted as a Fabry-Perot filter. This new configuration of FP filter exhibited similar behaviours as the conventional FP etalon, in which the parameters of free spectral range (FSR), full-width-half-maximum (FWHM) and finesse can be obtained from the transmission profiles.
format	Thesis
qualification_level	Master's degree
author	Md. Rashid, Siti Nafisah
author_facet	Md. Rashid, Siti Nafisah
author_sort	Md. Rashid, Siti Nafisah
title	Simulation of dual fibre Bragg gratings as a fabry-perot tunable filter
title_short	Simulation of dual fibre Bragg gratings as a fabry-perot tunable filter
title_full	Simulation of dual fibre Bragg gratings as a fabry-perot tunable filter
title_fullStr	Simulation of dual fibre Bragg gratings as a fabry-perot tunable filter
title_full_unstemmed	Simulation of dual fibre Bragg gratings as a fabry-perot tunable filter
title_sort	simulation of dual fibre bragg gratings as a fabry-perot tunable filter
granting_institution	Universiti Teknologi Malaysia, Faculty of Science
granting_department	Faculty of Science
publishDate	2010
url	http://eprints.utm.my/id/eprint/12342/6/SitiNafisahMdMFS2010.pdf
_version_	1747814926318043136

Simulation of dual fibre Bragg gratings as a fabry-perot tunable filter

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