LINDEN-SPE-7098 High-Strength Buoyant 750
LINDEN-SPE-7098 High-Strength Buoyant 750 is a rugged buoyant fiber optic cable designed for demanding marine and underwater applications. Built with high-strength reinforcement and a durable outer jacket, it provides reliable optical performance, excellent buoyancy, and protection against abrasion, moisture, and harsh environmental conditions. Ideal for underwater sensing, marine data links, offshore systems, and temporary or permanent deployment where strength and flotation are required.
Description
LINDEN-SPE-7098 High-Strength Buoyant 750 is a compact, buoyant singlemode fiber optic tether cable designed for subsea, marine robotics, ROV, inspection, research, and harsh-environment optical communication applications. It is built for projects that need a thin, lightweight cable with strong tensile performance and positive buoyancy, without sacrificing flexibility or optical reliability.
This model is listed by Linden Photonics as a High Strength STFOC™ Singlemode 9/125 cable with one fiber, 3.5 mm outside diameter, buoyant construction, and 750 lb / 341 kg ultimate tensile strength.
Product Overview
The LINDEN-SPE-7098 is engineered for underwater systems where a standard fiber optic cable may be too heavy, too fragile, or unsuitable for repeated deployment. Its buoyant design helps reduce drag and handling difficulty in water, while the high-strength construction allows the cable to support demanding subsea operations.
The cable is especially useful where a small cable diameter, low weight, and reliable singlemode optical transmission are required. The specification sheet identifies the cable as STFOC Non-Kink Buoyant 750 lbs, with 3.5 mm OD and singlemode fiber.
Key Features
High-strength buoyant construction
The cable provides 750 lbs tensile strength, making it suitable for demanding marine applications where the cable may be pulled, handled, deployed, or recovered repeatedly.
Compact 3.5 mm outside diameter
With a 3.5 mm / 0.137 inch OD, this cable offers a slim profile for tethered systems where cable drag, reel space, and deployment weight matter.
Singlemode optical fiber
The cable uses singlemode 9/125 fiber, making it suitable for long-distance optical data transmission in underwater and remote sensing applications.
Buoyant design
The product selector lists this model as buoyant, helping the tether maintain controlled behavior in water and reducing the risk of heavy cable sag in subsea operations.
Built for harsh subsea use
Linden describes its buoyant fiber optic tether as designed for harsh subsea environments and resistant to hydrostatic pressure.
Long continuous lengths
Linden notes that it manufactures long continuous lengths up to 25 km for this type of singlemode fiber optic tether.
Technical Specification Snapshot
| Specification | Detail |
|---|---|
| Product | LINDEN-SPE-7098 |
| Cable Type | High-Strength Buoyant Fiber Optic Cable |
| Construction | STFOC™ Non-Kink Buoyant |
| Fiber Type | Singlemode 9/125 |
| Number of Fibers | 1 fiber |
| Outside Diameter | 3.5 mm / 0.137 inch |
| Buoyancy | Yes |
| Ultimate Tensile Strength | 750 lbs / 341 kg |
| Working Load | 562 lbs |
| Product Family | BSTFOC |
| Copper Conductors | None |
| Typical Use | ROV, subsea tether, underwater inspection, marine research |




