What do you know about all-optical networks?
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Optical networks are high-capacity telecommunications networks based on optical technologies and components that provide routing, grooming, and restoration at the wavelength level as well as wavelength-based services.\n\nOverview\n\nAs networks face increasing bandwidth demand and diminishing fiber availability, network providers are moving towards a crucial milestone in network evolution: the optical network. Optical networks, based on the emergence of the optical layer in transport networks, provide higher capacity and reduced costs for new applications such as the Internet, video and multimedia interaction, and advanced digital services.\n\nAs with any new technology, many questions arise. How is the optical network different from existing networks? What are the network elements required for optical networks? What applications do optical networks best suit? This tutorial will address all of these questions and explain the technologies, architectures, and market trends for emerging optical networks.
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The problem you could have (doesn´t men that it WILL happen) is that if you use routers of different brands, instead of buying only Cisco for example, other routers might not accept comunication from certain subnets.
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More details, please... I am totally into Networks.. but i will need info about what and where ur devices located, the tunnel's bandwidth, networking devices, Routers, etc that you have.
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This is a networking problem - look up 'Linear Bus', 'Star' or 'Hub', 'Token Ring' and 'Fully Connected Mesh'.\n\nYou need 21 for a fully connected topology, but you could do it with far less.
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I had an essay on optical fibers last semester and this link was really, really helpful:\n\nhttp://electronics.howstuffworks.com/fiber-optic.htm\n\nWikipedia's not so bad too:\nhttp://en.wikipedia.org/wiki/Fiber_optics
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I got most of my study aids from  this site.\n\nhttp://www.alibris.com/search/books/subject/Optoelectronics
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From a data transmission standpoint, fiber optic performance is limited by attenuation and dispersion.  Attenuation is the loss of signal strength over distance; dispersion is the loss bandwidth due to the degradation of signal waveforms.
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"A Passive Optical Network (PON) is a fiber to the premises configuration in which unpowered optical splitters are used to enable a single optical fiber to serve multiple premises, typically 32. A PON consists of an Optical Line Termination (OLT) at the communication company's office and a number of Optical Network Units (ONUs) near end users. It is, in other words, a point-to-multipoint configuration, which reduces the amount of fiber required compared with point to point.\n\nDownstream signals are broadcast to each premises sharing a fiber. Encryption is used to prevent eavesdropping.\n\nUpstream signals are combined using a multiple access protocol, invariably time division multiple access (TDMA)."
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Fiber optic cables offer two big advantages over traditional copper in a network:  they are immune to electromagntic interference, and they can run much much further than copper without needing repeaters.  The bigest two disadvantages to fiber are that they are more expensive, and that the standards are still evolving.\n\nBoth of those disadvantages are going away, though, meaning that I strongly believe fiber is going to completely replace copper eventually.  Right now, many companies are "future proofing" by running fiber along with copper in walls so that if they need to upgrade to fiber in the future, it is already part of thier structured network.  Also, major backbones, either running between campuses or even just between wings or floors of a building are now more and more fiber only, because it just makes sense when you're already paying so much money to set up the backbone.\n\nThe source below is a tutorial on my company's website giving more details about fiber.
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ARCOS - American Regional Caribbean Optical Ring System
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Optical fibers act light light tubes.  It is as if the internal walls of the fiber are coated with a morrored substance.  Whenever the light traveling down the fiber tries to exite through the wall of the fiber the ligt is reflected back into the firber path.  So almost 100% of the light entering, exists at the other end.\n\nSince th fibers transmit light which moves faster than any other phenomenon on Earth, optucal fibers are perfect for use in High-speed communications applications.\n\nData is converted to digital signals and that it turned into a pattern of light which is transmiotted down the fiber.  With fiber optics we can rung Gigabytes fo data in places were only kiliobyts of data was transmitted before.\n\nThere are also medical applications for fiber optics where small cameras can be inseted into the human boody and the images from the camera are sent over a fibe optic line to the doctor.
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check out this\n\nhttp://computer.howstuffworks.com/home-network.htm
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It is a form of writing that contains tons of jargons that only a selected few can understand, often stretching the simple into massively complicated structures to impress its readers and bewilder the masses.\n\nSample:\n\nMultimode Fiber with a 50-Micron Core (ITU-T G.651)\nThe ITU-T G.651 is an MMF with a 50-m nominal core diameter and a 125-m nominal cladding diameter with a graded refractive index. The attenuation parameter for G.651 fiber is typically 0.8 dB/km at 1310 nm. The main application for ITU-T G.651 fiber is for short-reach optical transmission systems. This fiber is optimized for use in the 1300-nm band. It can also operate in the 850-nm band.
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dial up - 56kb/s\nadsl/cable-64kbs/256/512kbs\nadsl2+ 24000kbs
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Today's star topologies are connected via an active switch, which eliminates collisions...thus higher throughput.\n\nIf you use a passive hub instead, yes, you will have collisions as more and more devices are added to the lan...along with exponential backoffs and slower throughput.
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1.What kind of network setup do you have?.\n2.Is there any Network monitoring system deployed?\n3.Are there any QOS policies implemented.?
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They are an alternative to broadband. They use Optical fiber to the curb and distribute it via passive components to the rest of the local network. I am not sure that this is being used anywher.