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Academic Video Clips

This page is out-of-date. Please visit http://fiberfuse.info/video if you like. Thank you. 2013/02/11 S. Todoroki

Counter9 These were published in a scientific journal or shown in my talks.

A list of fiber fuse papers is available here.

Japanese version
Subsections


Fiber Fuse

See here to know what 'fiber fuse' is.

Void formation during fiber fuse propagation

In situ observation of fiber fuse void formation through a single-mode silica glass optical fiber. Record rate: 30000 fps.

Fiber fuse in the dark

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 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 $\mu$m laser light. The speed is about 1.2 m/s.


In situ observation of fiber fuse ignition

Optics Express, 13, 9248-9256 (2005)

Microscopic view of fiber fuse ignition. Original gray-scale images are converted to color-scale images.


In situ observation of fiber fuse propagation (over-exposed)

Ref.: Jpn. J. Appl. Phys., 44, 6A, pp. 4022-4024 (2005)

Microscopic view of fiber fuse propagation pumped at 9 W (1.48 $\mu$m).


In situ observation of fiber fuse propagation

Optics Express, 13, 6381-6389 (2005)

Microscopic view of fiber fuse propagation pumped at various laser powers (1.48 $\mu$m) ranging from 1.5 to 9.0 W. Original gray-scale images are converted to color-scale ones.


In situ observation of fiber fuse over hetero-core splice point

PLoS ONE, 3(9) e3276 (2008)

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 $\mu$sec, and Bottom: optical micrographs of the damage pattern generated at corresponding segments immersed in matching oil. The cladding diameter is 125 $\mu$m.

Animation of fiber fuse damage, demonstrating periodic void formation

Optics Express, 13, 6381-6389 (2005)

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 $\mu$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.


Fiber fuse self-termination

Optics Express, 13, 9248-9256 (2005)

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 $\mu$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 $\leq$1.28 W, respectively. The propagation speed was about 0.3 m/s.


In situ observation of fiber fuse self-termination

Optics Express, 13, 9248-9256 (2005)

Microscopic view of fiber fuse propagation just before self-termination. Original gray-scale images are converted to color-scale images.


Optical fuse

Ref.: Jpn. J. Appl. Phys., 43, 2B, pp. L256-L257 (2004)

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.


Fiber splicing via soft glass

Ref.: J. Ceram. Soc. Jpn., 110, 5, pp. 476-478 (2002)

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.


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TODOROKI Shin-ichi, Feb 11, 2013