12 Core Fiber Optic Cable

FTTH drop cable-Ink printing

Flat cable-Plasma pringting

Outdoor cable GYTC8S-Iron printing

Jumper cable- SC/UPC-SC/APC

GYTC8S 24 core -wooden drum

FTTH cable-1km drum

FTTH cable-carton packing

Patch cords-Pallet package

 

 

Patch cords in Pallet delivery

FTTH cable in cartons packing

Flat cable in plywood drum package

Composite drum full loaded into contianer

Solid wooden drum loading photo

 

 

Lightweight & flexible for easy installation Lower density than steel, smaller outer diameter and lighter weight under same tensile load; superior bending performance without brittle fracture.

Stable performance under extreme temperature Low thermal expansion coefficient avoids fiber extra loss caused by sheath shrinkage under temperature change, and provides cushioning against external impact.

Perfect for air-blown microduct installation Compact outer diameter and low friction coefficient enable quick air-blow laying inside existing microducts without new trenching.

Photonic crystal fiber is new-generation microstructure special optical fiber different from traditional solid core fiber, designed with periodic micro pore array structure. It controls optical transmission path via photonic bandgap effect, breaking the transmission limit of traditional fiber. It has ultra-bend resistance, anti-high-power laser and adjustable nonlinear optical characteristics. It is not limited to communication transmission, widely applied in high-precision medical laser equipment, industrial laser cutting, aerospace optical sensing and quantum communication fields. Customized pore structure can adjust fiber transmission wavelength freely. In the next decade, photonic crystal fiber will be popularized in ultra-high-speed quantum communication and industrial optical control fields, expanding new application boundary of optical fiber technology beyond civilian network communication.

Optical cable becomes the exclusive transmission medium for modern intelligent traffic system, covering highway monitoring, traffic signal control, tunnel intelligent sensing and urban rail transit communication. Intelligent traffic has strict anti-interference and long-distance transmission demands, which copper cable cannot meet. Roadside optical cable connects bayonet camera, radar speed measuring equipment and traffic signal host to realize real-time video back transmission and timing signal linkage. Tunnel flame-retardant optical cable adapts closed humid tunnel environment, uploading fire monitoring and air quality sensing data. Urban rail dedicated optical cable supports train dispatching communication and on-board real-time monitoring. Traffic optical network has high stability requirement, adopting double-cable loop networking to avoid single-line breakage causing traffic system paralysis.

Long-term strong ultraviolet radiation is one main natural aging factor for overhead outdoor optical cables. Ultraviolet photon will break polymer molecular chain of outer sheath material gradually, leading to sheath whitening, cracking, hardening and water permeability. Ordinary PVC sheath cannot resist ultraviolet ray, forbidden for aerial outdoor laying. PE and modified PE sheath add anti-ultraviolet carbon black additive to improve radiation resistance. High-altitude plateau areas have stronger ultraviolet intensity, needing special anti-UV aerial optical cable. Cracked sheath caused by ultraviolet aging will lead to armor rust, fiber dampening and increasing optical attenuation. Regular exterior inspection of aerial cable sheath is required for plateau outdoor communication line daily maintenance.

Optical fiber chromatic dispersion means different wavelength light has different transmission speed inside fiber, causing signal time delay difference at receiving end. It is divided into material dispersion, waveguide dispersion and modal dispersion three types. Material dispersion is caused by silica glass raw material characteristics; waveguide dispersion is determined by fiber core and cladding structural design; modal dispersion only exists in multi-mode fiber. Excessive chromatic dispersion will widen digital pulse signal, lead to code error and network packet loss. Communication engineers adjust working wavelength to zero-dispersion window to restrain dispersion. 1310nm is the zero-dispersion wavelength of standard G.652 fiber, which is the core reason for large-scale application of 1310nm wavelength trunk transmission.

Optical fiber transmission is divided into unidirectional transmission and bidirectional transmission according to signal transmission direction. Unidirectional transmission means one fiber core only transmits optical signal in single fixed direction, needing two fiber cores to complete sending and receiving interaction, which is the most common mode for traditional trunk lines. Bidirectional transmission adopts different wavelength transceiver technology, realizing uplink and downlink signal transmission on one single fiber core simultaneously. Household FTTH broadband adopts bidirectional transmission: 1490nm wavelength for downlink receiving data, 1310nm wavelength for uplink sending data. Bidirectional mode saves half fiber core resources, suitable for access network. Unidirectional mode owns stronger anti-crosstalk performance, prioritized for long-distance high-speed backbone optical transmission.