LINDEN-SPE-7098-4 High-Strength Buoyant 750
The LINDEN-SPE-7098-4 High-Strength Buoyant 750 is a compact, singlemode buoyant fiber optic tether designed for underwater vehicles, ROVs, marine inspection systems, and long-distance subsea data transmission. With a 3.5 mm outside diameter, 750 lbs tensile strength, low optical attenuation, and a proprietary LCP/aramid/LDPE jacket construction, it offers a strong and lightweight solution for harsh underwater environments.
Description
Product Overview
LINDEN-SPE-7098-4 High-Strength Buoyant 750 is a rugged, lightweight buoyant fiber optic tether designed for demanding subsea, ROV, marine research, inspection, and underwater communication applications. Built around Linden Photonics’ strong tether fiber optic cable technology, this cable is engineered to provide high tensile strength while maintaining a compact cable diameter and near-neutral buoyancy in water.
The base LINDEN-SPE-7098 specification is listed as a 3.5 mm OD singlemode buoyant cable with 750 lbs tensile strength, 341 kg UTS, and specific gravity of 0.99, making it suitable for underwater systems where strength, flexibility, and low drag are important.
Key Features
- High-strength buoyant fiber optic cable
- 750 lbs tensile strength / 341 kg UTS
- Singlemode fiber construction
- 3.5 mm compact outside diameter
- Specific gravity: 0.99
- Designed for ROV and subsea tether applications
- Low optical attenuation at 1310 nm and 1550 nm
- Linden proprietary jacket design
- LCP / aramid braid / LDPE construction
- Abrasion-resistant outer protection
- Cable ID serialization for traceability
- Optical propagation test data supplied with shipment
Detailed Product Description
The LINDEN-SPE-7098-4 High-Strength Buoyant 750 is designed for applications where a fiber optic cable must combine strength, buoyancy, flexibility, and reliable optical performance. In marine and subsea environments, ordinary fiber optic cables may be too fragile, too heavy, or unsuitable for repeated deployment. This cable is built to address those challenges by combining a strong internal fiber structure with a rugged buoyant outer design.
Its singlemode optical fiber supports long-distance data transmission, making it suitable for underwater inspection, ROV control, sensor data transfer, marine research, and other remote subsea systems. The cable’s 3.5 mm OD keeps the profile slim, helping reduce drag in water while still delivering high mechanical strength.
The cable uses a Linden proprietary jacket design with a primary strength coating that includes LCP, aramid braid, and LDPE. This construction helps protect the optical fiber while supporting the cable’s high tensile strength and buoyant performance.
Technical Specifications
| Specification | Details |
|---|---|
| Product | LINDEN-SPE-7098-4 High-Strength Buoyant 750 |
| Base Reference Document | LINDEN-SPE-7098 |
| Cable Type | STFOC Non-Kink Buoyant Fiber Optic Cable |
| Fiber Type | Singlemode |
| Cable OD | 3.5 mm / 0.137 inch |
| OD Tolerance | ±0.127 mm / ±0.005 inch |
| Tensile Strength | 750 lbs |
| UTS | 341 kg |
| Safe Working Load Guideline | 15% / 113 lbs |
| Minimum Bend Radius Guideline | 70 mm / 2.75 inch |
| Weight in Air | 9.52 g/m / 6.4 lbs per 1,000 ft |
| Specific Gravity | 0.99 |
| Attenuation @ 1310 nm | < 0.45 dB/km |
| Attenuation @ 1550 nm | < 0.35 dB/km |
| Jacket Construction | LCP / Aramid Braid / LDPE |
| Optical Testing | 100% tested at 1310 nm and 1550 nm |
| Traceability | Cable ID serialization |
| Test Data | Optical propagation test package supplied |
Source note: I found the public specification for LINDEN-SPE-7098. I did not find a separate public page specifically naming LINDEN-SPE-7098-4, so the technical data above is based on the publicly available LINDEN-SPE-7098 family/spec sheet.




