| MRV Products Fiber Optic and GMX Products
 
 
  Multimode Fiber-Optic Modules
 MRV provides a wide variety of SFP and 
GBIC modules for fiber optic communications, including data and video support. 
Multimode optical interfaces (generally 850nm) are designed for short distance, 
low cost communications. Multimode SFPs are used in several applications:
 
  Extended Multimode (MMX) Fiber-Optic 
ModulesCopper-to-Fiber - using an pluggables-based media converter, a switch or 
  router with copper interfaces can be attached to multimode fiber optic cabling 
  to reach longer distances (for example up to 500m for Gigabit Ethernet, as 
  opposed to 100m for copper) 
  Connect to a switch or router with a multi-mode interface, and then, 
  through a Media Converter, convert to singlemode. This allows traditionally 
  short-distance systems to extend to long distances. 
  In WDM systems, it is required to convert the signal from the host system 
  (switch or router) to a specific wavelength. Since the host system is often a 
  multimode fiber (especially in high-speed Ethernet, Fibre Channel, and SONET 
  applications), it is important to have a multimode fiber optic connection 
  option to the WDM system.  MRV provides a unique Multimode Extension (MMX) solution to 
extend the reach of high-speed data networking protocols over traditional 
multimode fiber. FDDI networks (100Mbps) allowed up to 2km rings to be created, 
which led to a large number of 2 km fiber plant installations in campus 
environments. MMX technology can extend Gigabit Ethernet beyond 2 km, allowing 
simple upgrades of FDDI backbone networks to Gigabit Ethernet. The typical usage 
of MMX pluggables would be in a media converter to connect a copper or standard 
multimode system to 2 km fiber link.
 
 Single-Mode Fiber-Optic 
Modules
 MRV provides an enormous range of single-mode fiber optic 
provides an enormous range of single-mode fiber optic interfaces in the SFP form 
factor, including solutions for virtually every known data and video protocol, 
and even protocol independent solutions. Single-mode SFPs and GBICs are used in 
a variety of applications:
 
  Single Fiber SolutionsCopper-to-Fiber - using an SFP-based media converter, a switch or router 
  with copper interfaces can be attached to single-mode fiber optic cabling to 
  reach extremely long distances (for example up to 80km for Gigabit Ethernet, 
  as opposed to 100 m for copper or 500 m for multimode fiber) 
  Distance extension - in an SFP-based signal repeater/regenerator, two 
  single-mode SFPs are used to extend the distance of fiber optic links up to 
  hundreds of kilometers. 
  Connect to a switch or router with a multi-mode interface, and then, 
  through an SFP-based Media Converter, convert to single-mode. This allows 
  traditionally short-distance systems to extend to long distances. 
  In WDM systems, it is required to convert the signal from the host system 
  (switch or router) to a specific wavelength. In some cases, the host system is 
  a single-mode fiber (especially in SONET OC-48 applications), so it is 
  important to have a single-mode fiber-optic connection option to the WDM 
  system.  MRV provides a unique 
capability of both transmitting and receiving data on a single fiber. This 
feature is critical for many Fiber-to-the-X (FTTX) environments, where a single 
fiber is laid to each customer. MRV's single-fiber solutions cover a range of 
protocols and distances, and even include single- fiber WDM. For Ethernet 
applications, MRV provides SFP modules that directly connect to a bi-directional 
fiber interface. MRV Also provides a wide variety of specialty patch cables to 
combine wavelengths and multiplex transmit and receive 
signals.
 
 
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