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Mode-field converting fibre fabricated from a side-hole fibre

Mode-field converting fibre fabricated from a side-hole fibre

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A new mode-field converting fibre has been fabricated from a side-hole fibre with a circular core. An elliptical core of the mode-field converting fibre was realised by heating the side-hole fibre from the side to collapse the holes. Transmission loss of the mode-field converting fibre was < 0.1 dB. Coupling efficiency between an LD with an aspect ratio of 3.75 and the mode-field converting fibre was as high as 71.7%.

References

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      • V.S. Shah , L. Curtis , R.S. Vodhanel , D.P. Bour , W.C. Young . Efficient power couplingfrom a 980-nm, broad-area laser to a single-mode fibre using a wedge-shaped fiberendface. J. Lightwave Technol. , 1313 - 1318
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      • H.M. Presby , C.R. Giles . Asymmetric fibre microlenses for efficient coupling to ellipticallaser beams. IEEE Photonics Technol. Lett. , 2 , 184 - 186
    3. 3)
      • Yanagawa, H., Ono, T., Oyobe, A.: `Mode-field converting fibre for coupling tophotonic devices', Tech. Dig. of OFC/IOOC'93, 1993, 4, p. 1–2.
    4. 4)
      • K. Yoshida , T. Morikawa . Fabrication and characterization of side-holesingle-mode optical fibres. Opt. Fiber Technol.
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