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Q: Replace ethernet cables with POF backbone on home Powerline?
Hi all.
I regularly transfer many large files to/from my media device (like a mini NAS) two rooms away. Though this box has both Ethernet and Wi-Fi connectivity, neither provide a satisfactory throughput. So I caved and installed a pair of Devolo Magic LAN 2 Powerline adapters. Sure there's a lot of bandwidth loss, but even that is faster than using a "networked" connection via my router. The setup is very simple: Mediabox - CAT-7 (S/FTP) Ethernet cable - Powerline (two rooms further) Powerline - CAT-7 (S/FTP) Ethernet cable - Laptop For some time now, I've been thinking (dreaming) it would be great if I could replace my CAT-7 cables with glass fibre... and then came POF (Plastic Optical Fibre). Using POF, there would be 0% signal loss, plus it's not subject to induction which is an added bonus. So how would I go about doing this, if it's at all feasible? Besides the obvious POF cable (which I wouldn't mind running though the house as it's so small), what else would I need? A POF switch? Something else? It's possible that the signal frequencies used by Powerline may not be compatible with POF (I hope not !). I have no idea. I'd appreciate the input of an electronics guru on this. Thanks. x13 --------------= Posted using GrabIt =---------------- ------= Binary Usenet downloading made easy =--------- -= Get GrabIt for free from https://www.shemes.com/ =- |
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Q: Replace ethernet cables with POF backbone on home Powerline?
On 9/19/2020 5:13 AM, x13 wrote:
but even that is faster than using a "networked" connection via my router. Wired router? Wireless router? What sort? I wired my old house with Cat 5e when I moved in 20+ years ago and have no trouble moving data at least 70-80% of Gigabit speed between devices which are capable of handling the sustained throughput. My file transfers never get anywhere close to my router -- they go through a Gigabit switch (or two or three) along the way depending on where they are headed. If my present setup was so slow that powerline adapters showed an apparent speed increase I think I'd be looking at what is wrong with the present setup rather than dreaming fiber dreams. BTW if you had fiber you would still have the problem of getting the signal into and out of the devices and, unless you had some sort of magical never-heard-of laptop with a fiber socket, you would still be dealing with fiber-to-ethernet adapter at each end which would be subject to normal Ethernet speed standards. BTW-BTW it is not all that difficult to install high-speed Ethernet wiring without doing major damage and if you don't trust yourself there are people who will do the job and probably more cheaply than buying fiber infrastructure. Plenum-rated cable is not all that large and is pretty slippery and easy to drag where you want. There, I guess I've beaten that particular horse thoroughly enough... -- Bodger's Dictum: Artifical intelligence can never overcome natural stupidity. |
#3
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Q: Replace ethernet cables with POF backbone on home Powerline?
x13 wrote:
Hi all. I regularly transfer many large files to/from my media device (like a mini NAS) two rooms away. Though this box has both Ethernet and Wi-Fi connectivity, neither provide a satisfactory throughput. So I caved and installed a pair of Devolo Magic LAN 2 Powerline adapters. Sure there's a lot of bandwidth loss, but even that is faster than using a "networked" connection via my router. The setup is very simple: Mediabox - CAT-7 (S/FTP) Ethernet cable - Powerline (two rooms further) Powerline - CAT-7 (S/FTP) Ethernet cable - Laptop For some time now, I've been thinking (dreaming) it would be great if I could replace my CAT-7 cables with glass fibre... and then came POF (Plastic Optical Fibre). Using POF, there would be 0% signal loss, plus it's not subject to induction which is an added bonus. So how would I go about doing this, if it's at all feasible? Besides the obvious POF cable (which I wouldn't mind running though the house as it's so small), what else would I need? A POF switch? Something else? It's possible that the signal frequencies used by Powerline may not be compatible with POF (I hope not !). I have no idea. I'd appreciate the input of an electronics guru on this. Thanks. x13 Could you make this more complicated ? What if the laptop is such a loser, it doesn't deserve all this frippery in the first place ? As long as you have *some* connectivity, that's a real win. ******* This article says plastic optical fiber has a loss of 180dB/km. That's not exactly a wonder-pony. Could you do a set of EO modules to work with that ? Of course. Plastic fiber is used for TOSLink at 6Mbit/sec, using EOs that "cost a dollar" on the ends. All components are optimized for that single application. The EO probably doesn't even have AGC to compensate for various lengths of fiber. https://www.fiberoptics4sale.com/blo...-optical-fiber "SIPOF, today has a best bandwidth of 12.5 MHz-km and an attenuation of 180 dB/km" This article helps interpret bandwidth-distance product, which is typically dispersion limited (for the lousy number stated above). https://www.rp-photonics.com/bandwid...e_product.html At 100 meters then, it could pass 125MHz. At 20 meters, it could pass 625MHz. The encoding method then converts that into some baud rate. At 20 meters, the loss would be 4dB. I expect the connector loss, or launch losses, will add to that. Module design with AGC could give maybe a 15dB budget with ease. But, you'll be paying money for this too. The solution no longer "costs $1", because the modulation method and transmitter type have to change to hit really high rates. The EO guys at work, it used to be a bad joke, that like fusion power, they'd promise us "cheap modules" and we'd say in return "yes, only 50 years to go...". Certain components can be cheap, like lasers stolen out of DVD players for $1, but the modules just never seem to get cheaper. Paul |
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