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All-optical format conversion from NRZ to RZ signals using a walk-off balanced nonlinear fibre loop mirror

All-optical format conversion from NRZ to RZ signals using a walk-off balanced nonlinear fibre loop mirror

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The authors have successfully demonstrated a novel scheme for signal conversion from the non-return-to-zero to return-to-zero formats by using a walk-off balanced nonlinear fibre loop mirror with duty ratio controllability and with no extinction ratio degradation. This scheme may be very useful in all-optical communication systems as an interfacing device for low speed local networks with high speed optical trunk lines.


    1. 1)
      • S. Bigo , E. Desurvire , B. Desruelle . All-optical RZ-to-NRZ formatconversion at 10 Gbit/s with nonlinear optical loop mirror. Electron. Lett. , 22 , 1868 - 1869
    2. 2)
      • S. Bigo , E. Desurvire , E. Brun , S. Gauchard . Bit-rate enhancement through optical NRZ-to-RZ conversion and passivetime-division multiplexing for soliton transmission systems. Electron. Lett. , 12 , 984 - 985
    3. 3)
      • S. Kawanishi , H. Takara , O. Kamatani , T. Morioka , M. Saruwatari . 100Gbit/s, 560 km optical transmission experiment with 80 km amplifier spacingemploying dispersion management. Electron. Lett. , 470 - 471
    4. 4)
      • H.K. Lee , K.H. Kim , S.Y. Park , E.-H. Lee . A walk-off balanced nonlinearfibre loop mirror. IEEE Photonics Technol. Lett. , 12 , 1441 - 1443

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