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Vector coupled-mode calculation of guided vector modes on an equilateral three-core optical fiber

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2 Author(s)
Huang, H.S. ; Dept. of Electr. Eng., Nat. Taiwan Univ., Taipei, Taiwan ; Chang, Hung-Chun

The guided vector modes propagating on an equilateral three-core optical fiber in which the component cores are identical, single-mode, and arrayed in an equilateral triangle are determined using the coupled-mode approach. It is shown that in the case of weakly guiding fibers, the polarization patterns of the six vector array modes can be correctly obtained if the vectorial-form coupled-mode theory is applied and the coupling among the six HE/sub 11/ modes of the individual cores is considered. However, it is found that the accuracy of the coupled-mode analysis decreases as the fibers become more strongly guiding, and the predicted field patterns are distorted.<>

Published in:

Microwave and Guided Wave Letters, IEEE  (Volume:1 ,  Issue: 3 )