Overcoming restrictions of traditional FBG sensor networks using SIK-DS-CDMA

S. Abbenseth; S. I. Lochmann

doi:10.1117/12.622923

28 September 2005 Overcoming restrictions of traditional FBG sensor networks using SIK-DS-CDMA

S. Abbenseth, S. I. Lochmann

Proceedings Volume 5952, Optical Fibers: Applications; 59521K (2005) https://doi.org/10.1117/12.622923
Event: Congress on Optics and Optoelectronics, 2005, Warsaw, Poland

Abstract

Due to their variability Fiber Bragg Grating (FBG) sensors are introduced in a growing number of applications. Furthermore these sensors are predestined for serial networking, whereby the two properties spectral selectivity and reflectivity led directly to wavelength division multiplex (WDM) and time division multiplex (TDM), respectively. But, both technologies show big disadvantages with regard to the efficiency of resource utilisation. In contrast to WDMA, in our proposed system using sequence inversion keyed direct sequence code division multiplexing (SIK-DS-CDM), the FBG spectra can overlap. Also the light pulses, reflected with a unique delay by each sensor, can superimpose. Hence more information per time reaches the receiver compared to TDMA. A simulation with 20 FBGs in a spectral range of 2nm shows the abilities of this system, whereby theoretical works regarding optimal codes and network structure deal with its conditions.

Citation Download Citation

S. Abbenseth and S. I. Lochmann "Overcoming restrictions of traditional FBG sensor networks using SIK-DS-CDMA", Proc. SPIE 5952, Optical Fibers: Applications, 59521K (28 September 2005); https://doi.org/10.1117/12.622923

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