Low-crosstalk, short-length mismatched optical coupler designed by new weighting function

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Abstract

A newly self-developed Broadband weighting function is presented to show the excellent results comparing with the Blackman and Hamming weighting function in applying to the waveguide structure of mismatched optical couplers for the demand of short-length, C+L-band, and low crosstalk. It is found that the coupler with the Broadband weighting function can reach the bandwidths between 1.360 to 1.700 μm with a coupling length of 2.5 mm and crosstalk of -35 dB. Obviously, the Broadband WF is suited in weighting the waveguide structure of a mismatched optical coupler to obtain a short coupling length, low crosstalk, and broad bandwidth.

Original languageEnglish
Title of host publicationPassive Components and Fiber-based Devices VI
DOIs
StatePublished - 2009
EventPassive Components and Fiber-based Devices VI - Shanghai, China
Duration: 2 Nov 20096 Nov 2009

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume7630
ISSN (Print)0277-786X

Conference

ConferencePassive Components and Fiber-based Devices VI
Country/TerritoryChina
CityShanghai
Period2/11/096/11/09

Keywords

  • Blackman function
  • Coupling waveguide structure
  • Hamming function
  • Mismatched optical coupler
  • Optical directional coupler

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