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Design and analysis of a novel polarisation splitting directional coupler

Design and analysis of a novel polarisation splitting directional coupler

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We present a novel polarisation splitting directional coupler configuration consisting of two interacting optical waveguides with a thin layer of metal between the two waveguides. Using Ghatak et al.'s recently developed matrix method we show that the proposed device has extinction ratios of about −31 dB and throughput loss less than 0.1 dB.

References

    1. 1)
      • G. Stewart , W. Johnstone , B. Culshaw , T. Hart . , Surface plasmon resonance in thin metal films for optical fibre devices.
    2. 2)
      • A.W. Snyder , A. Stevenson . Polarization splitters and birefringent couplers. Electron. Lett. , 75 - 77
    3. 3)
      • K.S. Chiang . Birefringent-fiber polarization splitters. Electron. Lett. , 908 - 909
    4. 4)
      • M.S. Yataki , D.N. Payne , M.P. Varnham . All-fiber polarizing beam splitter. Electron. Lett. , 249 - 251
    5. 5)
      • A.K. Ghatak , K. Thyagarajan , M.R. Shenoy . Numerical analysis of planar optical waveguides using matrix method. J. Lightwave Technol. , 660 - 667

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