Silica nanotaper optics with Bragg-fiber structure

Lin Ma, Takashi Katagiri, Yuji Matsuura

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

4 Citations (Scopus)


We demonstrate the possibility of confining light in a submicron silica core by introducing a Bragg multilayer cladding. 1 μm-core Bragg tapers with mode field diameters about 1.1 μm for 850 nm wavelength are successfully fabricated by a sputtering technique combining with tapering method using a traveling burner. Simulation of the mode intensity profiles for both our devices and air cladding silica fibers are made by a beam propagation method. Bragg fiber tapers show stronger confinement than silica glass tapers. The ultra-small core Bragg taper device will be a good candidate as the mode coupler for nano-optical devices.

Original languageEnglish
Title of host publicationPassive Components and Fiber-based Devices III
Publication statusPublished - 2006
EventPassive Components and Fiber-based Devices III - Gwangju, Korea, Republic of
Duration: 2006 Sept 52006 Sept 7

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume6351 I
ISSN (Print)0277-786X


ConferencePassive Components and Fiber-based Devices III
Country/TerritoryKorea, Republic of


  • Bragg fiber
  • Tapered waveguide


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