Direct imaging of optical interference in erbium-doped Al2O3 waveguides

G.N. Hoven, van den, A. Polman, C. Dam, van, J.W.M. Uffelen, van, M.K. Smit

Research output: Contribution to journalArticlePopular

12 Citations (Scopus)
131 Downloads (Pure)


Interference of 1.48-mu m light in multimode interference waveguides is made visible by imaging green and infrared upconversion luminescence from Er3+ ions dispersed in the waveguide. A two-dimensional mode density image can be derived from the data and agrees well with mode calculations for this structure. This new technique provides an interesting tool for the study of optical mode distributions in complicated waveguide structures and photonic band-gap materials. (C) 1996 Optical Society of America
Original languageEnglish
Pages (from-to)576-578
JournalOptics Letters
Issue number8
Publication statusPublished - 1996


Dive into the research topics of 'Direct imaging of optical interference in erbium-doped Al2O3 waveguides'. Together they form a unique fingerprint.

Cite this