Chinese Journal of Lasers, Volume. 33, Issue 7, 933(2006)
Experimental Study of Long-Period Moiré Gratings
Two kinds of special long-period fiber gratings, phase-shift and apodised long-period gratings, were studied by many researchers, because of their special spectral characteristics. According to the theory of long-period moiré gratings, with the methods of step-by-step ultraviolet (UV) writing and double-exposure with different grating period, several kinds of long-period moiré gratings were fabricated in the hydrogened high-germanium-doped fiber by controlling the period and the first position of both exposure and the exposure-time of each step, which realized the effects of phase-shift and apodization. The results indicated that the moiré gratings technology can be well applied in fabricating the special kinds of long-period fiber gratings, such as phase-shifted and apodised gratings.
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[in Chinese], [in Chinese], C. Paul. Experimental Study of Long-Period Moiré Gratings[J]. Chinese Journal of Lasers, 2006, 33(7): 933