# Fileset

[lat_ignt_sem4.pdf](https://mdr.nims.go.jp/filesets/8ac03ec1-6e42-4572-9ab6-641f8098d055/download)

## Creator

[TODOROKI, Shin-ichi](https://orcid.org/0000-0003-3986-1900)

## Rights

In Copyright[In Copyright](http://rightsstatements.org/vocab/InC/1.0/)

## Other metadata

[In-situ observation of fiber-fuse ignition](https://mdr.nims.go.jp/datasets/fec879cb-88a8-4e9f-b536-bc2e1461838d)

## Fulltext

UntitledLSK3, ICONO/LAT 2005 (1)'&$%In-situ Observationof Fiber Fuse IgnitionShin-ichi TODOROKI (Xin�iqi Riiqeviq Todoroki)Advanced Materials Lab. / NIMS Japan30 framesper sec.100,000frm/s ?Slide 1'&$%Introduction Fiber fuse• Found in 1987(R.Kashyap & K.J.Blow)• Optical discharge runstoward the light source leaving periodic voids����Video~WHeat~1m/sSlide 2LSK3, ICONO/LAT 2005 (2)'&$%OVERVIEWIn-situ observation of fiber-fuse ignitionVideographyHow was the moment captured?The momentHow did the discharge appeared?Additional factsDoes it the only mode of ignition?Slide 3'&$%Videography to capture the ignition1480nm9WGlass ferrule Co oxide powderSlide 4LSK3, ICONO/LAT 2005 (3)'&$%Videography Shooting condition• 10µs/frame• 1µs-exposure with ND filters (×16)• 256×32 pixelsFiberLaser1480nm, 9WND filterSMF-28Zoom lensSlide 5'&$%The moment Trajectory of the radiant����VideoSlide 6LSK3, ICONO/LAT 2005 (4)'&$%Additional facts Photographs of damaged tailsTypeATypeB⇐=TypeC⇐= ∼ 6cmSlide 7'&$%SUMMARYIn-situ observation of fiber-fuse ignitionVideographyIgnited in a glass ferrule. Captured every 10µs.The momentFrom a slow & dark radiant at ∼0.3mm from the edge.Additional factsMust be other modes of ignition to be investigated.Slide 8LSK3, ICONO/LAT 2005 (5)'&$%Acknowledgement• Mr. Kazuhide HANAKA &Mr. Akira SAKAMAKI• Dr. Satoru INOUEAnnouncementTomorrow 14:30 at Hall 6Symposium onOptical Discharge Propagation in Fiber WaveguidesSlide 9