Fiber Bragg grating–based self-referencing technique for wavelength-multiplexed intensity sensors
2002; Optica Publishing Group; Volume: 27; Issue: 4 Linguagem: Inglês
10.1364/ol.27.000222
ISSN1539-4794
AutoresSílvia Abad, Manuel López-Amo, F. M. Araújo, Luís Ferreira, J. L. Santos,
Tópico(s)Advanced Fiber Laser Technologies
ResumoAn amplitude-phase-conversion self-referencing technique for intensity-modulated photonic sensors that uses two different-wavelength fiber Bragg gratings is presented. With this technique, the system response has been demonstrated to be almost unafffected by network power variations as high as 90% of the total power launched by the source. We prove the multiplexing capability of this type of self-referenced fiber sensor by wavelength-division multiplexing two of them in a star network. A tunable fused biconical wavelength-division multiplexer is used for sensor addressing at the detection block, providing both good isolation and low cross-talk values.
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