Fiber Optic Cables – Types and Symbol Meanings. Key aspects 

Fiber optic cables are essential for transmitting data through light pulses. These cables consist of glass or plastic fibers that internally reflect light, enabling extremely fast information transfer. They are becoming increasingly vital to modern telecommunications, supporting high-speed internet, data transmission, and various digital services. 

In response to the growing demand, BITNER Cable Factory has expanded its selection of cables and wires to include the BiTfiber fiber optic cable line, which is engineered with specialized designs that comply with strict standards and certification requirements.

Types of BiTfiber Optic Cables

Outdoor Cables

These cables are designed to withstand various weather and environmental conditions. They feature a loose tube construction filled with gel, which protects the optical fibers inside. They can be installed in secondary ducts, micro-ducts, or even buried directly in the ground. Additionally, they are suitable for aerial installations, whether blown or suspended as self-supporting cables.

• • BiTfiber Z-XOTKtmsd
  • BiTfiber Z-XOTKtsd
  • BiTfiber Z-XOTKtsdD
  • BiTfiber Z-XXOTKtsdD
  • BiTfiber Z-(XV)OTKtsd
  • BiTfiber Z-(XV)OTKtsdD
  • BiTfiber A-DQ(ZN)B2Y
  • BiTfiber S-XOTKtsdp

Indoor Cables

These cables are designed for indoor use and feature a construction that includes a single-fiber tight-buffered or semi-tight-buffered tube. They are equipped with flame-retardant jackets and emit low levels of harmful gases in the event of a fire. Examples include: 

• • BiTfiber W-NOTKSd (simplex)
  • BiTfiber W-NOTKSd (duplex)
  • BiTfiber W-NOTKSd (minibreakout)

Universal Fiber Optic Cables

These cables are designed for both indoor and outdoor use. They provide excellent resistance to various weather conditions and are flame-retardant, making them ideal for subscriber connections and facilitating fast network deployments. Below is a list of universal fiber optic cables: 

• • BiTfiber ZW-NOTKtsd
  • BiTfiber ZW-NOTKtsdD
  • BiTfiber ZW-NXOTKtsdD
  • BiTfiber ZW-(NV)OTKtsd
  • BiTfiber ZW-(NV)OTKtsdD
  • BiTfiber U-DQ(ZN)BH
  • BiTfiber ZW-NOTKtcdD

Special Fiber Optic Cables

These cables are specifically designed for specialized applications, including the mining industry, sewage systems, and mobile device connectivity. Some examples of these cables are: 

• • BiTfiber ZKS-XXOTKtsFo
  • BiTfiber ZKS-XXOTKtsDFo
  • BiTfiber YOTKGtsFoyn
  • BiTfiber YOTKGtsDFoyn
  • BiTfiber YOTKGtsFtZnyn
  • BiTfiber YOTKGtsDFtZnyn

Fiber Optic Cable Designations

Selecting the appropriate fiber optic cables from the extensive range available at BITNER will depend on your understanding of their designations.

Symbol Meanings in Cable Applications 

Z – External cables 
ZKS – External duct cables 
W – Internal cables 
ZW – External/internal cables 
S – External, self-supporting cables 

Symbol Meanings for Outer Sheath Materials 

X – Polyethylene

Y – PVC

Q – Polyurethane

V – Polyamide

Yn – Flame-retardant PVC

N – LSOH material (halogen-free and flame-retardant

(XV) – Dual-layer sheath (polyethylene + polyamide)

(NV) – Dual-layer sheath (LSOH + polyamide)

Symbol Meanings for Inner Sheath Materials 

X – Polyethylene

Y – PVC

Q – Poliuretan

V – Polyamide

Yn – Flame-retardant PVC

N – LSOH material (halogen-free and flame-retardant)

Within the scope of application, the symbols are defined as follows:

OTK – Optical telecommunications cable

OTKG – Optical telecommunications mining cable

For cable core types, the symbols represent: 

ts – Tube with dry sealing

tc – Central tube

tm – Microtube

S –Tight or semi-tight tube

Regarding dielectric properties, the symbol indicates: 

d – Designation of a fully dielectric cable (if the “d” is absent in the cable name, it means the cable contains metallic components such as a support strand, moisture barrier, or steel armor). 

For additional dielectric cable reinforcement, the symbols are: 

D – Additional dielectric cable reinforcement 

Db – Optional fiberglass yarn reinforcement, which also provides rodent protection 

In terms of armor type, the symbol signifies: 

Fo – Armor made of round steel wires 

FtZn – Armor made of galvanized steel tapes

For flat cable designation, the symbol indicates: 

p – Designation of a flat cable

 When it comes to the number and type of fibers in the cable, the symbols mean: 

Example: 36J2D or 36J(G652D): 36 single-mode fibers that comply with the ITU-T G652D category 
12G62.5: 12 multi-mode fibers with a core diameter of 62.5µm, OM1 grade 
12G50(OM2): 12 multi-mode fibers with a core diameter of 50µm, OM2 grade

For cable core configuration, the symbol indicates: 

Example: (3×12): The arrangement of fibers in the cable – in this case, 3 tubes containing 12 fibers each 

Complete fiber information, for instance: 36J2D(3×12) or 36J2D(6×6)