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Dense wavelength division multiplexing of fibre Bragg grating sensors using CDMA

Dense wavelength division multiplexing of fibre Bragg grating sensors using CDMA

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The dense wavelength division multiplexing of fibre Bragg grating sensors is demonstrated by combining code division and wavelength division multiplexing schemes. This approach allows close spectral spacing among Bragg grating sensors without sensor spectral dynamic range limitation.

Inspec keywords: wavelength division multiplexing; fibre optic sensors; code division multiple access; Bragg gratings

Other keywords: wavelength division multiplexing; CDMA; dense WDM; fibre Bragg grating sensors; WDMA; code division multiplexing

Subjects: Signal processing and conditioning equipment and techniques; Fibre optics; Fibre optic sensors; fibre gyros; Gratings, echelles; Fibre optic sensors

References

    1. 1)
      • Al-Raweshidy, H.S., Uttamchandani, D.: `Spread spectrum technique for passivemultiplexing of interferometric optical fiber sensors', SPIE Fibre Optics '90, 1990, 1314, p. 342–347.
    2. 2)
      • R.C. Dixon . (1984) Spread spectrum systems.
    3. 3)
      • A.D. Kersey , A. Dandridge , M.A. Davis . Low-crosstalk code-division multiplexed interferometric array. Electron. Lett. , 351 - 352
    4. 4)
      • J.A. Slehi . Code division multiple-access techniques in optical fiber networks--PartI. IEEE Trans. , 8 , 824 - 833
    5. 5)
      • M.A. Davis . Interrogation of 60 fibre Bragg grating sensors with microstrainresolution capability. Electron. Lett. , 15 , 1393 - 1394
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