[in Chinese], [in Chinese]. Phase Shifted Long Period Grating and Its Application in Gain Flattening[J]. Acta Optica Sinica, 1999, 19(9): 1207
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The transmission spectrum of long period grating was analized by a combination of coupled mode theory and transfer matrix method. It is suggested that a phase-shifted long period grating can be used to flatten the gain spectrum with two peaks, and the result proved that such gain flattening is plausible.