For many years, 1G was the dominant speed in enterprise networks but that is certainly no longer the case today. As it turns out, the vast majority of enterprise networks have already migrated to or are in the process of migrating to 10G.
The 10G technology has been available for many years now so that is no longer a hindering factor. Whether it is 10G capable switches or other elements of the network, these are all available widely.
Also, the transition from 1G to 10G is facilitated by the fact that you do not need a complete forklift and replacement of your network. For the most part you can reuse the same fiber infrastructure. As for optical transceivers, 1G SFP and 10G SFP+ utilize the same fort factor and very often you can unplug the 1G SFP and replace by a 10G SFP+ in the same port (assuming of course the switch supports 10G already)
While the clear advantage of going to a 10G network is the 10 fold increase in bandwidth and speed, cost remains an important factor to consider. Over the last few years the price of 10G switches and other network components like optical transceivers has been dropping steadily and that's why more and more 10G is taking over as the dominant speed in enterprise networks. While 10G does remain more expensive, the jump in cost is relatively small considering the 10x gain in speed.
GigOptics - Your Supplier for 1G and 10G optics
At Gigoptics, we offer a wide range of optical transceivers including all types of 1G SFP and 10G SFP+; all tested to ensure quality and reliability. For more information, contact us at firstname.lastname@example.org.