4 December 1998 Effective fabrication of long-period gratings by the use of microlens array
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A new method for fabricating Long Period Grating (LPG) using a microlens array is introduced. Instead of blocking the excimer laser beam, this new method convergences the UV laser beam into an intensity modulated profile and the writing efficiency is improved. This method enables shorter grating writing time and also suitable for batch production of LPGs, thus providing an efficient method with potential in the mass production of LPGs.
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Michael S. Y. Liu, Michael S. Y. Liu, Hwa-Yaw Tam, Hwa-Yaw Tam, Weichong Du, Weichong Du, } "Effective fabrication of long-period gratings by the use of microlens array", Proc. SPIE 3491, 1998 International Conference on Applications of Photonic Technology III: Closing the Gap between Theory, Development, and Applications, (4 December 1998); doi: 10.1117/12.328744; https://doi.org/10.1117/12.328744

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