Montalvo García, JulioVázquez García, María CarmenSánchez Montero, David Ricardo2009-06-292009-06-292006-05Optics Express, Vol. 14, Issue 11, pp. 4601-46101094-4087https://hdl.handle.net/10016/4526A new scalable self-referencing sensor network with low insertion losses implemented in Coarse Wavelength Division Multiplexing (CWDM) technology is reported. It allows obtaining remote self-referenced measurements with a full-duplex fibre downlead up to 35 km long, with no need for optical amplification. Fibre Bragg gratings (FBG) are used in order to achieve a reflective configuration, thus increasing the sensitivity of the optical transducers. Low-cost off-the-shelf devices in CWDM technology can be used to implement and scale the network. Ring resonator (RR) based incoherent interferometers at the measuring points are used as selfreferencing technique. A theoretical analysis of power budget of the topology is reported, with a comparison between the proposed network and a conventional star topology. Finally, the new configuration has been experimentally demonstrated.application/pdfengFiber optics sensorsMultiplexingBragg reflectorsRemote sensingresearch articleTelecomunicaciones10.1364/OE.14.004601open access