Interferometric effects in bend loss in buffered single- and overmoded optical fibers

Frank Haran, James S. Barton, Julian D. Jones

Research output: Chapter in Book/Report/Conference proceedingConference contribution


A theoretical model has been developed to describe the bend loss characteristic of buffered single-mode optical fiber, based on interference between the core-guided mode and a 'whispering gallery' mode guided in the buffer coating. The theory is supported by experiments in which the relative phase of the modes was modulated by temperature or wavelength. As the arc length of the bend is increased, multiple-order interference is observed and predicted. The model was extended to over-moded fibers, and was consistent with experiments demonstrating coupling between the LP11 and a whispering gallery mode.

Original languageEnglish
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
Number of pages10
Publication statusPublished - 1994
EventInterferometry '94: Interferometric Fiber Sensing - Warsaw, Pol
Duration: 16 May 199420 May 1994


ConferenceInterferometry '94: Interferometric Fiber Sensing
CityWarsaw, Pol


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