Design of short length and C+L-band mismatched optical coupler with waveguide weighted by the Blackman function

Chi Feng Chen, Yun Sheng Ku, Tsu Te Kung

Research output: Contribution to journalArticlepeer-review

9 Scopus citations

Abstract

A mismatched optical coupler with waveguide weighted by the Blackman function is numerically investigated in the demand of short length, C+L-band, and low crosstalk. Utilizing the full factorial design, the structure parameters of coupling waveguide are obtained by beam propagation method. In the condition of crosstalk of -35 dB, the mismatched optical coupler with proper selected waveguide structure parameters is found to have a coupling length of 3.60 mm in the transmission wavelength ranges of C+L-band (1.53-1.61 μm). Obviously, the selection and design of waveguide structure are very important to satisfy the qualities of a mismatched optical coupler for the demand of short length, broad bandwidth, and low crosstalk.

Original languageEnglish
Pages (from-to)208-213
Number of pages6
JournalOptics Communications
Volume282
Issue number2
DOIs
StatePublished - 15 Jan 2009

Keywords

  • Adiabatic directional couplers
  • Blackman weighting function
  • Coupling waveguide structure
  • Mismatched optical coupler
  • Optical coupler

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