SUBMARINE APPLICATIONS UTILIZING ULTRA-LONG REACH TRANSMISSION TECHNOLOGY

摘要

The global market for festoon and regional undersea systems is new and relatively untapped. Utilizing commercially available ultra-long reach terrestrial technology carriers are now able to rapidly, and cost-effectively, establish presence in a number of markets along and between coastlines. Enabled by strong error-correction coding, Raman amplification and advanced modulations techniques it is now possible to transparently support native lOGbps DWDM systems to maximize the bandwidth-distance product without incurring the operational and capital expense of deploying and maintaining specialized undersea optical repeaters. Borrowing from such recently commercialized advancements in ultra-long reach terrestrial transmission systems, unrepeatered applications can utilize the same techniques to mitigate non-linear effects to enable native 10 Gbps unrepeatered transmission between landing sites separated by hundreds of kilometers. Seamless integration with the terrestrial plant ensures simplified operational and maintenance procedures thus reducing the life-cycle cost of the system while allowing for diverse optical protection switching schemes. This next generation of unrepeatered transmission systems can augment existing network capacity, provide alternate protection routes for land-based systems, or completely obsolete many of the systems currently in use by supporting higher capacities in a more cost-effective manner than previously possible.