Design criterion for low-loss optical coupler tapers |
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| Authors: | Chiang K.S. |
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| Affiliation: | Australian Defence Force Academy, University of New South Wales, Department of Mathematics, University College, Campbell, Australia; |
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| Abstract: | A criterion for the local taper angle of a low-loss single-mode fibre coupler is established by considering the dominant mode coupling in the coupler taper. Effects due to structure parameters, such as cladding/core thickness ratio, corecladding index difference and core separation, are investigated. It is found that the criterion for the coupler taper can be well approximated by that for the single-mode fibre taper with the same structure parameters. |
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