In this paper, we discuss the design and fabrication of diffractive elements for coupling applications involving multiple fibres. We present a diffractive beam homogeniser for coupling to a fibre bundle. The flexibility of diffractive optics for fibre coupling is demonstrated by elements combining homogenising and beam splitting functions for coupling to two or four individually mounted fibres. The two way fan out was designed as a binary element to minimise the computational time and fabrication complexity. The element had a diffraction efficiency of 54%, which was considered to be too low. This was addressed in the design of the four way fan out which was designed as a 16 level element. Again the geometry was chosen to minimise the computational time required. The efficiency of the four way fan out is approximately 80%.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Diffractive beam shaping elements for high power fibre coupling


    Contributors:


    Publication date :

    2003-01-01


    Size :

    79788 byte




    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English



    DThB2 Diffractive optics for high power beam shaping and material processing

    Balluder, K. / Blair, P. / Rudman, P. et al. | British Library Conference Proceedings | 2000


    DTuD21 Optimization of beam shaping diffractive elements using a bias phase

    Balluder, K. / Blair, P. / Taghizadeh, M. R. | British Library Conference Proceedings | 2000


    Optimal design of boundary-modulated diffractive optical elements for general beam shaping

    Kim, Hwi / Yang, Byungchoon / Park, Jinhong et al. | SPIE | 2002



    Design of a fibre-to-chip coupling device with diffractive optical elements (DOE)

    Buczek, H. / Institution of Electrical Engineers; Electronics Division | British Library Conference Proceedings | 1993