Coarse WDM networking of self-referenced fiber-optic intensity sensors with reconfigurable characteristics
2010; Optica Publishing Group; Volume: 18; Issue: 5 Linguagem: Inglês
10.1364/oe.18.004396
ISSN1094-4087
AutoresD. S. Montero, Carmen Vázquez, J. M. Baptista, J. L. Santos, Julio Montalvo,
Tópico(s)Semiconductor Lasers and Optical Devices
ResumoA CWDM network operating in reflective configuration for multiplexing remote Radio-Frequency (RF) self-referenced fiber-optic intensity sensors is analyzed and experimentally investigated. In the described approach, the use of fiber Bragg gratings as spectral selective mirrors allows to implement delay lines in the electrical domain, achieving more compact sensor-heads and easy-reconfigurable sensing points. Two measurement parameters for the sensing heads are defined and comparatively studied in terms of design parameters, linearity, sensitivity and resolution. The proposed sensor configuration is modeled following the Z-transform formalism, which permits an easy analysis of the system frequency response. Experimental results are presented, showing the characterization of the network performance and considering the properties of sensor self-referencing as well as sensor crosstalk.
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