Launch conditions and mode coupling in hollow-glass waveguides

Rick K. Nubling, James A. Harrington

Research output: Contribution to journalArticlepeer-review

88 Scopus citations


The attenuation and input end heating of hollow-glass waveguides are greatly affected by the way in which the input laser energy is coupled into the guides. A theoretical discussion of coupling conditions is related to waveguide loss and local heating, which can occur when the coupling is not optimized. Our results indicate that the optimum coupling for maximum transmission is not necessarily equivalent to optimum coupling to the lowest order HE11 mode. Additionally, it is shown that the input end heating of these waveguides can be reduced substantially with minimal effect on transmission if the waveguide bore size is large.

Original languageEnglish (US)
Pages (from-to)2454-2458
Number of pages5
JournalOptical Engineering
Issue number9
StatePublished - Sep 1998

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics
  • General Engineering


  • Beam delivery
  • Carbon dioxide laser
  • Coupling efficiency
  • Fiber optics
  • Hollow waveguides
  • Hollow-glass waveguides
  • Waveguide modes


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