Spot size variation in non-adiabatic single mode fibre tapers
- 1 January 1989
- journal article
- Published by Institution of Engineering and Technology (IET) in IEE Proceedings J Optoelectronics
- Vol. 136 (4) , 219-224
- https://doi.org/10.1049/ip-j.1989.0036
Abstract
In an adiabatic taper, spot size is determined by the fundamental local mode alone. In non-adiabatic tapers, some of the power in the fundamental mode is coupled into cladding local modes, so that spot size is determined by a superposition of all these modes and can depart significantly from the adiabatic result. Both analytical and numerical solutions are presented.Keywords
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