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Physics
Classical Physics
Optics
Light coupling from optical fiber to glass?
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[QUOTE="Tom.G, post: 6833187, member: 581973"] Yes. Methylene Chloride dissolves epoxy, it also removes paint from metal, bark from trees, skin from bone. It is sold (diluted?) over-the-counter as paint stripper. Full strength is available from makers of epoxy. Containers are a problem though, only all-metal or all-glass will hold the stuff, no gaskets on the cover, they dissolve. (I havent tried, but one of the Teflons might hold up.) Ordinary copy paper or printer paper that claims "High Brightness" (94+%) has optical brighteners added that fluoresce under UV light. There is also "Fluorescein", a moderately common chemical that fluoresces under UV. Another critical subject is the optical acceptance angles of the fiber and of the glass capillary. Those, along with the dispersion angle of the light source (LED) can severly limit the optical coupling efficiency. Note that these angles are often reported as a 'half angle', that is the limiting angle off the physical axis of the device/material beyond which incoming light is reflected rather than accepted (sometimes known as the 'critical angle'). Amazon has UV flashlights, 395nm, at low cost. A dimensioned sketch of the optical system would help. Cheers, Tom [/QUOTE]
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Physics
Classical Physics
Optics
Light coupling from optical fiber to glass?
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