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Multiple conversion of modes in a fiber grating by using Fabry-Perot mirrors: analysis

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1 Author(s)
C. -X. Shi ; Res. Center for Adv. Sci. & Technol., Tokyo Univ., Japan

The multiple conversion between LP/sub 01/ and LP/sub 02/ modes, which is induced by both the periodic coupling through photorefractive fiber gratings and the resonance produced by two Fabry-Perot mirrors, is investigated by using coupled-mode theory. The result shows that the mode conversion has a narrow periodic passband spectrum if the period of the grating satisfies the phase-matching condition for the LP/sub 01/ and LP/sub 02/ modes. The conversion peaks are higher in the vicinity of the wavelength of phase-matching condition, but become lower gradually as the wavelength deviates from the phase-matching wavelength.<>

Published in:

IEEE Photonics Technology Letters  (Volume:4 ,  Issue: 11 )