Tight-Buffered Fiber Optic Cables for Indoor Applications | Simplex & Duplex Fiber Cables

■ What is an Indoor Tight-Buffered Fiber Optic Cable?

Indoor tight-buffered fibers (900μm tight-buffered) are used as a central structure and are armed with Kevlar aramid yarns which are with a good flame retarding feature. They are even more flexible than outdoor loose-tube cables. They are more compact; therefore, can be used indoors as preferred. 

It is used often in the following basic cases: 

• It is a connection between the distribution frame and the equipment, the patch cords. 

• In-house connectivity of devices (like ONU, transceiver). 

• Drop wiring FTTH (Fiber to Home) gives line connection to homes. 

• Fabrication of fiber pigtails and patch cords. 

The cables come with easy stripping, superior flexibility, and universal installation for various amplification purposes in communications or networking systems.

Indoor Optical Fiber Cable

■ Zion Indoor Tight-Buffered Cable Product Range 

Zion Communication gives a complete series of indoor tight-buffered cables, differentiated into four major categories:

1️⃣ Tight-Buffered Fiber 

• Structure: (900μm) Tight buffered fibers that, if needed, can come with the outer coat or remain bare 

• Advantages: Simple for fusion or mechanical splicing, easy handling, and wrapping. 

• Applications: Proper for the pigtails, patch cords, and indoor connections for short distances. 

• Recommended Types: G.657.A1 / A2, G.652.D 

2️⃣ Simplex Round Indoor Cable 

• Structure: One 900μm tight-buffered fiber reinforced with Kevlar strength members and LSZH or PVC flame-retardant sheath. 

• Advantages: High-reliability, low smoke, and LSZH which is compatible with standard connectors. 

• Typical Use: A patch cord form device-to-device connections, patch panels, FTTH, and intelligent building wiring. 

3️⃣ Standard Parallel Duplex Flat Indoor Cable (Type A) 

• Structure: Two equal lengths of 900μm tight-buffered fibers, with a flat LSZH jacket or surrounded by an outer jacket. 

• Advantages: Ideal for flat surface layouts, having an easy installation, and maintaining flexibility. 

• Typical Use: The optical transceivers, ONU devices, and duplex communication modules are the ones to which this is a connection line. 

4️⃣ Enhanced Duplex Flat Indoor Cable (Type B) 

• Structure: Fibers and FRP or Steel wire as the strength component in the cable, protected by an LSZH flat jacket (available both black and white). 

• Advantages: Enhanced tensile and compression strength may be operated for longer connections and for complex routing. 

• Applications: Building backbone extension, splitter connect, and indoor FTTH systems demanding higher mechanical durability. 

■ Technical Parameters Comparison

■ Packaging & Service Support 

Delivery Options: In coils or bundled bags, respectively, that are cased are named. 

Customization: Length, color, printing and labeling are offered on request. 

OEM/ODM: Brand custom decoration, color jacket printing, and connectors termination services.

■ Why Choose Zion Communication?

James is a technical manager and associate at Zion Communication. 

Specializes in Optical Fiber communications,  FTTH Solutions, 

Fiber optic cables,  ADSS cable, and ODN networks.

james@zion-communication.com

+86 13777460328