Trenching a conduit is multiple times more expensive than laying fiber direct. More than likely using conduit would not be cost effective.
With a conduit you have to: (i) purchase the conduit, which is more expensive than the fibre cable itself, (ii) install the conduit, (iii) blow the fiber cable into the conduit and (iv) install all the support infrastructure required for a conduit system, such as manholes and cable wells.
Furthermore access points have to be installed at close enough intervalls to make air blowing or water jetting possible. In rural settings this might well be far more often than otherwise needed for a direct burial network. In all the steps along the way, a conduit based network drives up the cost, resulting in a multiple on the buildout cost.
Protection, diagnostics, additional capacity and other media. None of the aforementioned are necessary any better or easier in a ducted network. A duct does not protect against backhoe fade any better than a proper direct burial cable. Diagnostics are done the same way in a ducted and a direct buried network. However direct burial cables with metallic streng members are easier to find than a non-metallic ducted cable. Adding more cables to a small diameter duct is not always easy, feasible or straightforward, especially if the duct was not properly or professionally installed. As to other media, such as metallic cables, the whole point of installing a fiber network is to only need to maintain one outdoor plant, not multiple legacy networks.
In addition to the extra cost, there is a lot of fun and games to be had if you install ducts in regions with subzero temperatures. Water is going to get into the ducts and then you are going to have giant icicles with cable in the middle and duct on the outside.
Walking on a proper direct burial fiber optic cable is not even going to register. Anything less than a backhoe is unlikely to even leave a mark. On the other hand if you even look funny at a ducted cable, you might have problems.
Repairing a ducted network or a direct burial network is basically the same. You excavate the problem area and you replace the faulty parts. The main difference is that in a ducted network, you are going to spend most of your time fiddling and fixing the ducts, less time with fixing the fiber optic part.
Now, what a ducted network gives you, is flexibility, but at a greater cost. If properly built that is. A ducted network means you might not have to retrench later, but this might not be an issue in a rural setting.
With a conduit you have to: (i) purchase the conduit, which is more expensive than the fibre cable itself, (ii) install the conduit, (iii) blow the fiber cable into the conduit and (iv) install all the support infrastructure required for a conduit system, such as manholes and cable wells.
Furthermore access points have to be installed at close enough intervalls to make air blowing or water jetting possible. In rural settings this might well be far more often than otherwise needed for a direct burial network. In all the steps along the way, a conduit based network drives up the cost, resulting in a multiple on the buildout cost.
Protection, diagnostics, additional capacity and other media. None of the aforementioned are necessary any better or easier in a ducted network. A duct does not protect against backhoe fade any better than a proper direct burial cable. Diagnostics are done the same way in a ducted and a direct buried network. However direct burial cables with metallic streng members are easier to find than a non-metallic ducted cable. Adding more cables to a small diameter duct is not always easy, feasible or straightforward, especially if the duct was not properly or professionally installed. As to other media, such as metallic cables, the whole point of installing a fiber network is to only need to maintain one outdoor plant, not multiple legacy networks.
In addition to the extra cost, there is a lot of fun and games to be had if you install ducts in regions with subzero temperatures. Water is going to get into the ducts and then you are going to have giant icicles with cable in the middle and duct on the outside.
Walking on a proper direct burial fiber optic cable is not even going to register. Anything less than a backhoe is unlikely to even leave a mark. On the other hand if you even look funny at a ducted cable, you might have problems.
Repairing a ducted network or a direct burial network is basically the same. You excavate the problem area and you replace the faulty parts. The main difference is that in a ducted network, you are going to spend most of your time fiddling and fixing the ducts, less time with fixing the fiber optic part.
Now, what a ducted network gives you, is flexibility, but at a greater cost. If properly built that is. A ducted network means you might not have to retrench later, but this might not be an issue in a rural setting.