Extension of operational range of semiconductor optical add and drop multiplexer

Tomonori Yazaki*, Masayoshi Horita, Shinsuke Tanaka, Yuichi Matsushima

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


The contra-directional coupling between waveguides with a large difference of effective refractive index Δneff was investigated in order to extend the operational range of an optical add and drop multiplexer, which consists of vertically stacked semiconductor waveguides. Numerical calculations were performed, and the contra-directional coupling between the waveguides with a large Δneff was experimentally confirmed. The operating range of the device was successfully extended by more than 40 nm by using dissimilar waveguides with Δneff of 3%.

Original languageEnglish
Pages (from-to)1190-1193
Number of pages4
JournalJapanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers
Issue number2 B
Publication statusPublished - 2002 Feb
Externally publishedYes


  • Δn
  • Contra-directional coupling
  • Difference of effective refractive index
  • Operational range

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)


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