Communication Needs

how do i use fibre optics to connect different buildings?

I have 7 buildings in the same area and the distance between each building is 150m

Public Comments

1. Call a company that does network cabling. That's what keeps me employed.
2. You would need to install a switch at each location with a fiber nic. They would all be part of a LAN. You would need 50 micron multimode fiber for the installation due to distance limitations and you could create a gig link between all locations. Another option that would be cheaper that having fiber trenched to every building would be lasers. You can now purchase lasers with a one gig full duplex link between sites. One such company that can do this is Dominion. Hope this helps.
3. You are asking for quite a technical build. First you will need to lay down the Out Side Plant Fiber (OSPF) to connect the buildings together. This would invole the Building Management Team for each facilities approval. Once that is gained you will need to allow for diversity into each building without crossing over the other OSPF. Once all of the OSPF is in place you will need to supply the Transport equipment. This would depend on your actual system requirements (SONET, Ethernet, SDH). This could be as simple as a network of media converters to as complex as a Dense Wave Division Muliplexing (DWDM) system. Last after the core system is in place is when you would connect your end user system (Layer 3 or SS7 switch, once again depending on your application needs).
4. You DON'T want to use multi-mode between the buildings. The actual path for the fibers could be further. Your $$ are going to be in the labor to get the cable in place, not as much the cable costs. MMF would be used between floors basically or patching not building to building. That is seldom done these days. You haven't said what the requirements are like IP connectivity , storage, video, etc. Most LAN and storage switches have optic SFPs that with long wave can get you up to 4 gig at 10 kilometers. At this distance you don't need a DWDM solution. Call your local Cisco rep for pointers......