This white paper from OFS explores the rationale for when to use single-mode or multimode optical fiber.

Cloud computing and web services continue to drive increased bandwidth demand, pushing data communications rates from 1 and 10G to 40 and 100G and beyond in enterprise and data center networks. These higher speeds might lead system designers to believe that single-mode optical fiber enjoys an increasing advantage over multimode optical fiber in premises applications. However, higher Ethernet speeds do not automatically mean that single-mode fiber is the right choice.

Read the source article at OFS On OFS (Headquarters)