Polarisation independent all-optical demultiplexing using four wave mixing in dispersion shifted fibre

Polarisation independent all-optical demultiplexing using four wave mixing in dispersion shifted fibre

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A novel polarisation independent demultiplexer based on four wave mixing in a dispersion shifted fibre is proposed using a short, highly birefringent fibre in a forward and backward propagation scheme to allow polarisation diversity operation. The device has been tested with a 4×10 Gbit/s optical time division multiplexing transmitter. Polarisation dependency is less than 0.5 dB and the BER measurement does not show any floor down to 10-13.


    1. 1)
      • P.A. Andrekson , N.A. Olsson , J.R. Simpson , T. Tanbun-Ek , R.A. Logan , M. Haner . 16 Gbit/s all-optical demultiplexing using four-wave mixing. Electron. Lett. , 11 , 922 - 924
    2. 2)
      • T. Morioka , H. Takara , S. Kawanishi , K. Uchiyama , M. Saruwatari . Polarisation-independent all-optical demultiplexing up to 200 Gbit/susing four-wave mixing in a semiconductor laser amplifier. Electron. Lett. , 9 , 840 - 842
    3. 3)
      • T. Morioka , S. Kawanishi , K. Uchiyama , H. Takahara , M. Saruwatari . Polarisation-independent 100 Gbit/s all-optical demultiplexer using four-wavemixing in a polarisation-maintaining fibre loop. Electron. Lett. , 7 , 591 - 592
    4. 4)
      • Patent pending.

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