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Multi-mode & Single-mode Fibre Optic Cable
Release time: 2023-10-25

Multi-mode & Single-mode Fibre Optic Cable

Fiber Optic Cables Construction

There are several types of fiber optic cables, and they are differentiated according many construction properties like the core, buffer, fiber count, cable arrangement, sub units, filling, strength member, and outer jacket. Mixing all these properties, with each having its own derivative options, results in a large variety of fiber optical cables that can be used for different applications.
Fiber Optic Cable Construction PropertiesThe diameter of the inner “Core” of a fiber strand defines the main usage of a fiber cable. A fiber with a 9µm (9 micrometer) diameter core allows only one single light pulse to pass through it at a time, thus it is called single mode fiber.

On the other hand, a fiber with a 62.5µm or 50µm core diameter, allows for multiple pulses of light to refract and pass through it; and this type is called multi-mode fiber. Single mode fibers have a longer range but only transfer one signal; a single mode fiber can transfer one light signal up to 5 kilometers. Oppositely, multi-mode fibers can transfer several signals at the same time but to a shorter range; a multi-mode fiber can transfer multiple light signals up to 550 meters.
Fiber Optic Cable Construction Properties Fiber Core and Cladding Single Mode Multi-mode
Fibers Count Simplex Duplex or Multiple
Cable Arrangement Tight Buffer Loose Tube
Sub Units Cord Cable Breakout Cable
Cable Filling Gel-free Gel-filled
Strength Member Aramid Yarn Glass Yarn
Cable Coating Jacket Indoor Safe Outdoor Resistant

Multi-mode OM1 fibre optic cable (62.5/125)

Multi-mode OM1 fibre optic cable has 62.5/125µm cores and is generally used for backbone applications due to high capacity and reliability. Loose tube versions are ideal for external use and commonly available with SWA or CST mechanical protection. Tight buffered versions are designed for runs around multiple bends and not usually armoured. 
Multi-mode fibres have larger core diameters than single-mode so the light is reflected in a zigzag pattern down the core, resulting in higher attenuation rates (losses) than single-mode.

Construction – Multi-mode OM1 fibre

  1. 1. 62.5/125µm fibres with coloured coating
  2. 2. fibres are either contained in a loose tube (LT) or tight buffered (TB)
  3. 3. optional steel wire armour (SWA) or corrugated steel tape armour (CST)
  4. 4. generally with low smoke zero halogen (LSZH) sheathing

Technical – Multi-mode OM1 fibre

  1. 1. fibre diameter:core 62.5µm (micrometres), cladding 125µm
  2. 2. number of fibres:4, 6, 8, 12, 16 or 24 core versions commonly available
  3. 3. loose tube (LT):fibres are enclosed within protective tube(s), usually with a water resistant gel
  4. 4. tight buffered (TB):fibres have an additional tough waterproof layer over the normal coating

Multi-mode OM2 OM3 or OM4 fibre optic cable (50/125)

Construction – Multi-mode OM2, OM3 or OM4 fibre optic

  1. 1. 50/125µm fibres with coloured coating
  2. 2. fibres are either contained in a loose tube (LT) or tight buffered (TB)
  3. 3. optional steel wire armour (SWA) or corrugated steel tape armour (CST)
  4. 4. generally with low smoke zero halogen (LSZH) sheathing

Technical – Multi-mode OM2, OM3 or OM4 fibre optic

  1. 1. fibre diameter:core 50µm (micrometres), cladding 125µm
  2. 2. number of fibres:4, 6, 8, 12, 16 or 24 core versions commonly available
  3. 3. loose tube (LT):fibres are enclosed within protective tube(s), usually with a water resistant gel
  4. 4. tight buffered (TB):fibres have an additional tough waterproof layer over the normal coating 

Single-mode OS1 or OS2 fibre optic cable (9/125)

Single-mode OS1 or OS2 fibre optic cable has 9/125µm cores and is commonly utilized where low attenuation rates are required over long distances. Loose tube versions are ideal for external use and commonly available with SWA or CST mechanical protection. Tight buffered versions are designed for runs around multiple bends and not usually armoured. 
Single-mode fibres have much smaller core diameters than multi-mode so the light does not reflect as often, reducing losses to a minimum and guaranteeing an enormous range.

Construction – Single-mode OS1 or OS2 fibre optic

  1. 1. 9/125µm fibres with coloured coating 
  2. 2. fibres are either contained in a loose tube (LT) or tight buffered (TB)
  3. 3. optional steel wire armour (SWA) or corrugated steel tape armour (CST)
  4. 4. generally with low smoke zero halogen (LSZH) sheathing 

Technical –  Single-mode OS1 or OS2 fibre optic

  1. 1. fibre diameter: core 9µm (micrometres), cladding 125µm
  2. 2. number of fibres: 4, 6, 8, 12, 16 or 24 core versions commonly available
  3. 3. loose tube (LT): fibres are enclosed within protective tube(s), usually with a water resistant gel
  4. 4. tight buffered (TB): fibres have an additional tough waterproof layer over the normal coating

For a closer look at Multimode & Singlemode Fiber Optic Cable Price, you can check this website, and do not hesitate to email us for more info on info@uni-fibercable.com

How to Order OFC Cable Price

Our team is committed to providing outstanding service before, during, and after the sale. To learn more about our products or to place an order, please contact your sales representative. WhatsApp/Mobile/WeChat our Customer Service Department at +86 186 3866 8721 or email us at info@uni-fibercable.com
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