Point by point femtosecond laser inscription of fibre and waveguide bragg gratings for photonic device fabrication

Graham D. Marshall, Martin Ams, Michael J. Withford

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

12 Citations (Scopus)

Abstract

We present a flexible and rapid method for the production of Bragg gratings in a range of optical waveguides such as optical fibres and direct laser-written waveguides in bulk media. Using a low repetition rate (1 kHz) femtosecond laser, Bragg grating structures can be written in a point-by-point fashion (where each laser pulse inscribes one period of the Bragg structure) in both passive and active media be they fibre (FBG) or waveguide (WBG) based. Furthermore it is possible to control parameters such as the amplitude and chirp of the Bragg periods to create arbitrary reflection and transmission profiles. This technique can be coupled with existing fibre, rib waveguide and direct write waveguide technologies to create a range of photonic devices such as channel splitters, frequency combs, and signal amplifiers and conditioners for all-optical photonic signal processing. In initial tests 3 frequencies filter combs and Bragg grating reflectors with -53 dB insertion loss were written at arbitrary wavelengths in non-sensitised single mode fibre (SMF-28e) with process times between 30 and 90 seconds. These gratings are highly stable and withstand annealing to 600°C.

Original languageEnglish
Title of host publicationPICALO 2006 - 2nd Pacific International Conference on Applications of Laser and Optics, Conference Proceedings
EditorsMilan Brandt, Erol Harvey
Place of PublicationOrlando, Fla.
PublisherLaser Institute of America
Pages360-362
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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