Triple layer refractive index profile for tapered fibre beam expanders

Simo Tammela, Pekka Pöyhönen, Ari Tervonen

Research output: Contribution to journalArticleScientificpeer-review

1 Citation (Scopus)

Abstract

A triple layer index profile for tapered fibre beam expanders is designed. It is shown that it reduces the coupling losses between two unequal circular waveguides when compared to the use of a single-layer index profile.
It is also shown that the ellipticity of the modal field can be changed simultaneously with the size of the modal field using this triple layer profile.
Original languageEnglish
Pages (from-to)1205-1206
JournalElectronics Letters
Volume25
Issue number18
DOIs
Publication statusPublished - 1989
MoE publication typeA1 Journal article-refereed

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