Deploying FTTH Without Digging Things Up > Neat technology/concept

Neat technology/concept

It's actually not messing with the conduit. The fluid dissolves the dielectric in the coaxial cable, so once you pull the core out (probably copper, could be something else) you're left with the coaxial jacket, which can then be used as a conduit for fiber. So even direct-buried cable will work in this situation.

Oh... hrm, I guess I'm still not understanding it. Time for me to find a cross-section diagram of what the dielectric portion is, vs. conduit vs. copper/core...
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reply to iansltx
I don't believe you are correct. To dissolve the dielectric it would need to be a petroleum based product and wouldn't be biodegradable (Something they promote pretty heavily that they have EPA and EU certification for biodegradability of the fluid). But the biggest killer to your statement is that the system isn't for coax, they mention that they can do coax but this stuff is actually targeted at telco's and copper bundles based on their site information (Flash diagram, Video, FAQ and Pictures indicate copper bundles, not Coaxial cable) and I've never seen a telco copper bundle with dielectric around the copper pairs. Based on their diagram and flash program detailing the installation the fluid is nothing more than a lubricant (wouldn't surprise me if it's vegetable oil) that in the case of coax would be pressure injected between the dielectric and the sheath and then the whole dielectric + copper is pulled out in one piece leaving only the PVC sheath behind.

You really should visit the site before you start commenting on how the system works, but this is the internet, you know how it works based on the news post, right? Sheesh

No, sorry. I read the press releases on Multichannel (which specifically talked about dissolving the dielectric) and watched the demo video. Maybe I read everything wrong, but I could've sworn the release talked about dissolving the dielectric.

The dielectric and center conductor are not dissolved during the process. A combination of the fluids components and pressure allow the core to be extracted. The cable is left with the outside sheath and the aluminum turn-plate which serves as your conduit.

The technology is seeing success far greater than predicted on the process pertaining to coaxial cable.

Thanks for interjecting an official response. Guess I didn't know what I was talking about

reply to tubbynet

said by tubbynet:

said by koitsu:

Oh... hrm, I guess I'm still not understanding it. Time for me to find a cross-section diagram of what the dielectric portion is, vs. conduit vs. copper/core...

take a pair of snips to a leftover piece of coax. you have your center conductor (that protrudes from the fitting), then a "spongy" stubstance, then an outer jacket of some sort of metal and then some sort of outside wrapping/dressing.
the dielectric actually carries the wave. in the purely transverse electromagnetic (tem) case of wave propagation, you have a voltage differential between conductors, resulting in a electric (e) and magnetic (h) fields that obey maxwell's equations. when excited, these fields will allow for a propagation down the coaxial cable in the low-loss dielectric material according to the helmholtz wave equations.

q.