Tilted fibre gratings for sideways light delivery

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Abstract

We investigate the properties of tilted fibre gratings written using two techniques - namely UV laser with phase mask inscription in hydrogenated fibre, and pointby-point femtosecond IR inscription in nonphotosensitised fibre. The intended application of this work is for laser light delivery from the side of an intravenous optical fibre for cauterising biological tissue in surgical procedures. Consequently, broad bandwidth gratings capable of withstanding temperatures of 100's of degrees celsius are required. With an efficient and rapid writing process (exposure times of a few seconds to minutes are typical), we have produced phase-maskinscripted gratings using tilt angles of up to 8° and point-by-point inscripted tilted gratings. The latter have the advantage of being highly thermally stable (up to 600°C) and offer the prospect of suitable bandwidths through careful design of the grating. We present an investigation of these two grating structures.

Original languageEnglish
Title of host publicationProceedings of the 2nd Pacific International Conference on Application of Lasers and Optics 2006
EditorsMilan Brandt, Erol Harvey
Place of PublicationOrlando, FL
PublisherLaser Institute of America
Pages363-365
Number of pages3
ISBN (Print)0912035846, 9780912035840
Publication statusPublished - 2006
EventPICALO 2006 - 2nd Pacific International Conference on Applications of Laser and Optics - Melbourne, VIC, Australia
Duration: 3 Apr 20065 Apr 2006

Other

OtherPICALO 2006 - 2nd Pacific International Conference on Applications of Laser and Optics
CountryAustralia
CityMelbourne, VIC
Period3/04/065/04/06

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