As the demand for novel devices grows in telecommunications, there is a need to generate more flexibility in the materials that will enable these devices to come to fruition. By adding germanosilicate, there is now a range of UV and mid-IR laser processing techniques which are used to fabricate components such as Bragg gratings. However, the basis of these processing methods usually involves a change of density in the glass to achieve perturbations in the refractive index which can be accumulated along a waveguide to create a functional component. In the work described, this processing is enhanced by exploiting some of the unique transitional characteristics of glass recently highlighted as being an important factor in UV processing. This novel engineering exploits the fact that there is an effective rollover threshold between type I and type IIa processing with UV light and that it is strain dependent. In this manner the induced anisotropy is significantly larger than would otherwise be possible through simple UV-induced polarisability or geometric index changes. A buried planar waveguide device where stress conveniently already exists as compression on the waveguide core along the TE vector from the substrate is considered.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Creating large anisotropy in amorphous germanosilicate glass using a novel optical engineering approach


    Contributors:
    Canning, J. (author)


    Publication date :

    1999-01-01


    Size :

    152180 byte




    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English



    Photoinduced birefringence rotation in germanosilicate glass optical fiber

    Anbo Wang / Shunhua Zhou / Murphy, K.A. | IEEE | 1993


    Photoinduced Birefringence Rotation in Germanosilicate Glass Optical Fiber

    IEEE; Lasers and Electro-Optics Society | British Library Conference Proceedings | 1993


    Photoselective Reactions of H2 with Germanosilicate Glass

    IEEE; Lasers and Electro-Optics Society | British Library Conference Proceedings | 1994


    Second-harmonic generation in UV-poled germanosilicate glass

    Fujiwara, T. / Takahashi, M. / Ikushima, A. J. et al. | British Library Conference Proceedings | 1997


    Local structure around Ce in germanosilicate glass devices

    Warminski, T. / Stone, G. | IEEE | 1995