These were published in a scientific journal or shown in my talks.
A list of fiber fuse papers is available here.
See here to know what 'fiber fuse' is.
In situ observation of fiber fuse void formation through a single-mode silica glass optical fiber. Record rate: 30000 fps.
You can see how bright fiber fuse is. It ran at 1 m/sec through a
plastic-coated silica glass optical fiber (outer diameter: 0.9 mm) consuming the
energy of 7 W 1480 nm light.
Fiber fuse in the dark
Fiber fuse ignition and propagation
Optics Express, 13, 6381-6389
(2005)
Macroscopic view of fiber fuse propagation through a single-mode silica
fiber pumped by a 9.0 W and 1.48
m laser light. The speed
is about 1.2 m/s.
Microscopic view of fiber fuse ignition. Original gray-scale images are converted to color-scale images.
Microscopic view of fiber fuse propagation pumped at 9 W (1.48
m).
Microscopic view of fiber fuse propagation pumped at various laser
powers (1.48
m) ranging from 1.5 to 9.0 W. Original gray-scale
images are converted to color-scale ones.
Visible light emission of a fiber fuse and generated voids near the
splice points shown in the top. 2nd: Photographs of the visible light
emission of a fiber fuse pumped by 1070 nm 9W light (original
gray-scale image is converted to color-scale image), 3rd: their
intensity profiles along the dashed lines in these photographs taken
every 2.78
sec, and Bottom: optical micrographs of the damage
pattern generated at corresponding segments immersed in matching oil.
The cladding diameter is 125
m.
An edited video of a series of optical micrographs showing the damage
generated by 5.0 W laser light. The interval of the vertical lines is
17.8
m. The viewing speed of the video is about 50,000 times
slower than the propagating speed of the 5.0-W-pumped optical discharge.
Macroscopic view of an optical discharge running through a single-mode
silica fiber when the pump laser power is near the threshold value for
fiber fuse propagation (wavelength: 1.48
m). A stripped section of
fiber is located between the two bright spots in the captured
photograph. The larger spot is the optical discharge at one unstripped
end and the other spot is a reflection at the end away from the
discharge. The discharge passed through the segment when the power was
1.31 W or more. It self-terminated in or before the segment when the
power was 1.30 W or
1.28 W, respectively. The propagation speed
was about 0.3 m/s.
Microscopic view of fiber fuse propagation just before self-termination. Original gray-scale images are converted to color-scale images.
A device inserted in an optical fiber circuit which breaks in responce to excess incident light. As is the case of fuse in electric apparatus, it protects optical systems from accidents. My device is made of a low-melting glass and breaks down thermaly.
A technique for making optical fuse described above. Small amount of captured glass melt between two ends of silica glass optical fibers is quenched to form the device structure. It is applicable even for the melt with poor thermal stability.