Complete technical specification guide for GYXTW fiber optic cable — structure, fiber counts, attenuation values, mechanical properties, and application suitability.
Direct Answer
What is GYXTW fiber optic cable? GYXTW is a compact outdoor fiber optic cable built around one central loose tube. The optical fibers are placed inside a filled PBT tube, protected by water-blocking materials, steel tape or steel-polyethylene composite protection according to the final design, and a PE outer sheath. It is commonly selected for low-fiber-count duct, campus, access-network, and aerial-lashed routes where a compact cable and additional mechanical protection are required. Standard project configurations commonly use 2–12 fibers; the final fiber count, fiber type, cable dimensions, mechanical performance, and installation method must be confirmed before production.
GYXTW uses a central loose tube rather than multiple stranded loose tubes. This construction keeps the cable compact and economical for projects that do not require the higher fiber capacity of a stranded loose tube cable such as GYTS or GYTA. The optical fibers remain inside a PBT loose tube with controlled excess fiber length, allowing the fibers to tolerate temperature changes and installation stress without carrying the full mechanical load applied to the cable.
A typical GYXTW construction contains optical fibers, a central filled loose tube, water-blocking or filling materials, steel tape protection, strength elements according to the approved design, and a black PE outer sheath. Exact construction details can vary between manufacturers and project specifications. For that reason, buyers should confirm the approved cable drawing and datasheet instead of selecting the cable only by model name.
| Construction Element | Typical Function |
|---|---|
| Optical fiber | Common project options include G.652D and G.657A1/A2 single-mode fibers. Final fiber type must match the network design. |
| Central loose tube | Protects the fibers from mechanical stress and provides controlled excess fiber length. |
| Tube filling / water blocking | Helps restrict longitudinal water migration inside the cable. |
| Steel tape protection | Improves crush and mechanical protection. The exact steel tape or composite structure must be confirmed in the final design. |
| PE outer sheath | Provides outdoor environmental protection for duct and aerial-lashed routes. |
The following values describe common purchasing parameters, not a universal fixed datasheet. Cable diameter, weight, tensile load, crush resistance, bend radius, and temperature performance depend on fiber count, material selection, armor structure, and the customer-approved cable design.
| Parameter | Typical Project Option | Confirmation Required |
|---|---|---|
| Fiber count | Commonly 2, 4, 6, 8, 10, or 12 fibers | Confirm the exact count before production |
| Fiber type | G.652D, G.657A1, or G.657A2 | Confirm attenuation and transmission requirements |
| Fiber attenuation | Common single-mode targets include ≤0.35 dB/km at 1310 nm and ≤0.22 dB/km at 1550 nm | Use the approved fiber and finished-cable test specification |
| Loose tube | Central PBT loose tube with filling compound or approved water-blocking design | Confirm dry or gel-filled construction |
| Armor / protection | Steel tape or steel-polyethylene composite protection according to design | Confirm the required crush and moisture performance |
| Outer sheath | Black PE for outdoor use | Confirm sheath material, color, thickness, and marking |
| Installation | Duct, campus network, FTTx access route, or aerial-lashed route | Confirm route conditions and installation method |
| Drum length | Project-based standard or customized drum length | Confirm route length, tolerance, and packaging requirement |
GYXTW is best suited to outdoor communication routes that need a compact low-fiber-count cable with more mechanical protection than a basic non-armored central tube design. Common applications include telecom access links, campus connections, industrial communication routes, FTTx feeder or distribution segments, and duct routes between buildings.
Steel tape protection and the PE sheath make GYXTW suitable for many outdoor duct routes, subject to the specified pulling load, duct condition, and installation method.
The compact central tube design is practical for low-fiber-count links between buildings, equipment rooms, and access-network nodes.
GYXTW may be used in properly engineered aerial-lashed installations. It is not a self-supporting ADSS cable and must not be treated as one.
Standard GYXTW should not automatically be specified for continuous direct burial merely because it contains steel tape. Direct-burial routes can expose the cable to soil pressure, water, rocks, rodents, construction damage, and repeated mechanical load. For those conditions, a double-sheath or enhanced armored design such as GYXTW53, GYTA53, or GYTY53 may be more appropriate, depending on the required structure.
The final decision must be based on route conditions rather than model-name similarity. Buyers should specify whether the cable will be installed in duct, directly buried, aerial-lashed, exposed to rodents, installed near power infrastructure, or pulled through an existing conduit.
For a focused central loose tube versus stranded loose tube decision, review the GYXTW vs GYTS fiber optic cable comparison.
| Cable Type | Basic Construction | Typical Selection Logic |
|---|---|---|
| GYXTW | Central loose tube with steel tape protection and PE sheath | Compact low-fiber-count outdoor duct or aerial-lashed routes requiring additional mechanical protection |
| GYXTY | Central loose tube outdoor cable with strength elements according to design | Low-fiber-count routes where the specified GYXTY construction meets mechanical requirements |
| GYTS | Stranded loose tube cable with steel tape protection | Higher fiber counts, metro networks, backbone routes, and projects requiring a stranded tube structure |
| GYXTW53 | Enhanced armored central tube construction with additional sheath protection | Routes requiring stronger moisture and mechanical protection, subject to the final direct-burial specification |
A model number alone is not enough for a reliable quotation. Two cables sold as GYXTW can differ in fiber brand, attenuation grade, tube design, sheath thickness, steel tape structure, cable diameter, mechanical performance, printing, and drum length. A usable RFQ should include the following information:
Do not approve production from a generic website table alone. The final quotation should identify the fiber count, fiber type, construction, cable diameter, weight, tensile performance, crush performance, drum length, printing, and applicable test standard. These values should then be reflected in the approved datasheet or cable drawing.
Send your specifications for a direct supply quote
