The calculation of switching power of symmetric and asymmetric nonlinear directional couplers with variable coupling coefficient

Chengao Wang, Qu Li, Gangjun Liu, Guoliang Jin, Xiaozhen Xu

Research output: Contribution to journalArticle

3 Scopus citations

Abstract

It is proposed that the switching power of symmetric one-coupling-length nonlinear directional couplers (NLDC) with variable coupling coefficient (VCC) can be calculated as the weighted average of the local critical power of the coupler. Further, it is shown that the switching characteristics of a one-coupling-length VCC NLDC are determined mainly by the first half of the coupler and the switching power of an asymmetric VCC NLDC can be calculated as the weighted average of the local critical power over the first half of the coupler. Both symmetric and asymmetric examples are presented.

Original languageEnglish (US)
Pages (from-to)2248-2250
Number of pages3
JournalIEEE Photonics Technology Letters
Volume16
Issue number10
DOIs
StatePublished - Oct 1 2004

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ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Electrical and Electronic Engineering

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