Wavelength-division-multiplexed distributed fiber Raman amplifier bus network for sensors
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AuthorDíaz Lucas, Silvia; Lasheras, Gorka; López Amo, Manuel; Urquhart, Paul; Jáuregui Misas, César; López Higuera, José Miguel
© 2005 Society of Photo-Optical Instrumentation Engineers. One print or electronic copy may be made for personal use only. Systematic electronic or print reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited.
Proceedings of SPIE, 2005, vol. 5855, 242-245
17th International Conference on Optical Fibre Sensors, Brujas, 2005
SPIE Society of Photo-Optical Instrumentation Engineers
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Wavelength-division multiplexing (WDM)
Fiber Raman amplifier
Optical fiber sensors
We experimentally demonstrate a novel application of distributed fibre Raman amplification to a bus network for the wavelength multiplexing of optical sensors. Each sensor is uniquely identified by reflection from a fibre Bragg grating (FBG) and the distributed gain allows the number of sensors to be increased without using costly remote amplifiers. We show how the topology allows the received powers from the sensors to be equalised, even though only one Raman pump wavelength is used and we investigate how the performance depends on the launched pump power. The spectral filtering of the FBGs, combined with the distributed gain, jointly reduce the noise and we report measured signal to noise ratios.
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