Corning 12 Strand 62.5/125 Multimode OM1 Outdoor Armored Direct Burial Fiber Optic Cable - Black (Per Foot)

Leraning Center:
How to Pull Fiber Optic Cable

Do you need Multi Mode?

Multi-mode optical fiber (multimode fiber or MM fiber) is a type of optical fiber mostly used for communication over shorter distances, such as within a building or on a campus. Typical multimode links have data rates of 10 Mbit/s to 10 Gbit/s over link lengths of up to 600 meters—more than sufficient for the majority of premises applications.

Applications:

The equipment used for communications over multi-mode optical fiber is much less expensive than that for single-mode optical fiber.[1] Typical transmission speed/distance limits are 100 Mbit/s for distances up to 2 km (100BASE-FX), 1 Gbit/s to 220–550 m (1000BASE-SX), and 10 Gbit/s to 300 m (10GBASE-SR). Because of its high capacity and reliability, multi-mode optical fiber generally is used for backbone applications in buildings. An increasing number of users are taking the benefits of fiber closer to the user by running fiber to the desktop or to the zone. Standards-compliant architectures such as Centralized Cabling and Fiber to the Telecom Enclosure offer users the ability to leverage the distance capabilities of fiber by centralizing electronics in telecommunications rooms, rather than having active electronics on each floor.

Comparison to Single mode:

Multimode fiber has higher "light-gathering" capacity than single-mode optical fiber. In practical terms, the larger core size simplifies connections and also allows the use of lower-cost electronics such as light-emitting diodes (LEDs) and vertical-cavity surface-emitting lasers (VCSELs) which operate at the 850 nm and 1300 nm wavelength (single-mode fibers used in telecommunications operate at 1310 or 1550 nm and require more expensive laser sources. Single mode fibers exist for nearly all visible wavelengths of light).[2] However, compared to single-mode fibers, the limit on speed times distance is lower. Because multi-mode fiber has a larger core-size than single-mode fiber, it supports more than one propagation mode, hence it is limited by modal dispersion, while single mode is not. Also, because of their larger core size, multi-mode fibers have higher numerical apertures which means they are better at collecting light than single-mode fibers. Due to the modal dispersion in the fiber, multi-mode fiber has higher pulse spreading rates than single mode fiber, limiting multi-mode fiber’s information transmission capacity. Single-mode fibers are most often used in high-precision scientific research because the allowance of only one propagation mode of the light makes the light easier to focus properly. Jacket color is sometimes used to distinguish multi-mode cables from single-mode, but it cannot always be relied upon to distinguish types of cable. The standard TIA-598C recommends, for civilian applications, the use of a yellow jacket for single-mode fiber, and orange for 50/125 µm (OM2) and 62.5/125 µm (OM1) multimode fiber.[3] Aqua is recommended for 50/125 µm "laser optimized" OM3 fiber.

• Single-armor construction provides additional crush and rodent protection
• High-strength ripcord under armor for ease of stripping
• Gel-free design is fully waterblocked using craft-friendly water-swellable yarns and tapes, making cable access simple and requiring no clean up
• Available in 62.5 μm, 50 μm, single-mode and hybrid versions
• Standard 3.0 mm buffer tube size reduces the number of access tools required by crafts personnel
• SZ-stranded, loose tube design isolates fibers from installation and environmental rigors and allows for easy mid-span access

• 87
  

• 0.48 in

• Loaded:  121 mm (4.8 in)
• Installed: 182 mm (7.2 in)
  

• Short-Term: 2700 N (600 lb)
  
• Long-Term: 890 N (200 lb)

• Storage -40°C to 70°C (-40°F to 158°F)
  
• Installation: -30°C to 70°C (-22°F to 158°F)
• Operation: -40°C to 70°C (-40°F to 158°F)