Vertically coupled InGaAsP/InP buried rib waveguide filter

R. C. Alferness, L. L. Buhl, U. Koren, B. I. Miller, M. Young, T. L. Koch

Research output: Contribution to journalArticlepeer-review

17 Scopus citations


We report the first demonstration of narrowband (<17 Å full width at half maximum) wavelength selective grating-assisted coupling between vertically stacked buried rib InGaAsP/InP channel waveguides. These vertically coupled channel waveguides form the basis both of integrable filters essential to photonic circuits such as amplifier/filter and demultiplexer/detector circuits as well as a general approach to vertical integration of photonic circuits.

Original languageEnglish (US)
Pages (from-to)2573-2575
Number of pages3
JournalApplied Physics Letters
Issue number20
StatePublished - 1991

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)


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