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Modal characteristics of bent dual mode planar optical waveguides

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3 Author(s)
Kumar, A. ; Dept. of Phys., Indian Inst. of Technol., New Delhi, India ; Gallawa, R.L. ; Goyal, I.C.

Modal characteristics of bent dual-mode planar optical waveguides are obtained. The bending-induced changes in the modal power distribution is found to be quite different for the two modes. Surprisingly, unlike the fundamental mode, bending causes the fractional modal power for the second mode to increase in the inner core-half and to decrease in the outer core-half of the waveguide. Interestingly, this leads to a decrease in effective index of the second mode due to bending at sufficiently high V-values

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Lightwave Technology, Journal of  (Volume:12 ,  Issue: 4 )