Effect of the first-order mode in access waveguides on the performance of unbalanced MMI couplers

E.A. Patent, J.J.G.M. Tol, van der, F. Karouta, J.J.M. Binsma, M.K. Smit

Research output: Contribution to journalArticleAcademicpeer-review

2 Citations (Scopus)

Abstract

Unbalanced multimode interference (MMI) couplers are optical integrated components widely used in photonic integrated circuits. Couplers with two fixed coupling ratios: 85/15 and 15/85 are studied in this paper. Low-loss MMI couplers are designed and fabricated. Excitation of the first-order mode in access waveguides of MMI couplers can influence the excess losses and the coupling ratio of these components. The effect of the first-order mode excitation was simulated and confirmed by the experimental results, which are presented in this paper.
Original languageEnglish
Pages (from-to)1882-1884
Number of pages3
JournalIEEE Photonics Technology Letters
Volume16
Issue number8
DOIs
Publication statusPublished - 2004

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