Monolithic, all-optical Mach-Zehnder demultiplexer using an asymmetric twin-waveguide structure

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Abstract

We demonstrate monolithic integration of a twin-waveguide Mach-Zehnder terahertz optical asymmetric demultiplexer (MZ-TOAD). The InGaAsP-InP device operates at 1.55 μm wavelength and has two semiconductor optical amplifiers in the asymmetric MZ interferometer configuration with a single control input and a built-in switching delay. A 28-ps full-width at half-maximum (FWHM) switching window with high contrast ratio for a range of control powers is obtained using a counter-propagating optical signal and control pulses.
Original languageEnglish
Pages (from-to)600-602
Number of pages3
JournalIEEE Photonics Technology Letters
Volume13
Issue number6
DOIs
Publication statusPublished - 2001

Keywords

  • Mach-Zehnder demultiplexer
  • asymmetric twin-waveguide structure
  • integrated optics
  • optical control
  • monolithic integrated circuits

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