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Optical Engineering

Analytical study of Bragg-grating fiber-optic filters for DWDM and temperature-sensing applications
Author(s): Carlos Alberto de Francisco; Milson Tadeu Camargo Silva; Murilo Araujo Romero
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Paper Abstract

This work is concerned with the applications of Bragg-grating fiber-optic filters. First, on the basis of recently pointed out discrepancies between different formulations of the coupled-mode theory, we revisit the design process of devices intended for amplified spontaneous emission noise filtering in DWDM systems. Next, the use of these same basic filter structures in temperature sensing is discussed. The proposed device employs a dual-wavelength measurement scheme of the optical power being transmitted by the Bragg filter, thereby tracking temperature variations while simultaneously canceling spurious readings due to random optical power fluctuations.

Paper Details

Date Published: 1 July 2002
PDF: 5 pages
Opt. Eng. 41(7) doi: 10.1117/1.1483312
Published in: Optical Engineering Volume 41, Issue 7
Show Author Affiliations
Carlos Alberto de Francisco, Univ. de Sao Paulo (Brazil)
Milson Tadeu Camargo Silva, Univ. de Sao Paulo (Brazil)
Murilo Araujo Romero, Univ. de Sao Paulo (Brazil)


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