Linden’s ROV Fiber Optic Tether

Linden Photonics is renowned for its innovative fiber-optic solutions, specifically designed for Remote Operated Vehicles (ROVs). These tethers are crucial in underwater applications, offering high performance, durability, and reliability in challenging environments.

For use with ROV’s (Remote Operated Vehicles) and other underwater vehicles, the LINDEN-SPE-7098 tether is a premium ROV fiber optic cable. At 3.5mm in diameter, it has a tensile strength of more than 350 kg, and its density nearly matches that of seawater. The basic building block of the cable lies in the STFOC (Strong Tether Fiber Optic Cable) at its center. This patented technology relies on a jacket of extruded LCP (liquid crystal polymer) designed to provide strength and moisture protection to an otherwise delicate, bare fiber-optic element.

Surrounding this center fiber-optic element are torque-balanced Vectran strength members. This ROV cable is finished with a ruggedized, low-density polymer outer jacket.  Particularly with our STFOC cables, we can routinely produce single continuous lengths close to 50 km.

Our ROV cable designs are created for optimizing the mechanical, electrical and optical performance in demanding and harsh subsea environments. Our ROV cables are trusted and preferred for high quality, safety and reliability.

Linden’s ROV Tethers can include fiber optics, electrical conductors, coax, twisted pairs, shield, water block and aramid fillers. Linden Photonics manufacturers a variety of ROV tethers using proven methods and components for power, data, video and etc. at short lead times and competitive pricing since 2002.

Linden’s team of engineers works closely with customers and their application requirements to provide the most reliable cable solutions for high performance ROV’s used in defense, mine detection, finding shipwrecks and other marine or inspection applications. We continue to meet the changing needs of our customers with our quality services delivered beyond our customers’ expectations. We are happy to provide custom solutions because one cable does not fit all!


Cable Specification


Item No. Component Details
1 Cable OD 3.5 mm (0.137”)
2 Cable OD Tolerance ±0.127mm (0.005″)
3 Fiber Singlemode
4 Jacket Linden Proprietary Design;

Primary strength coating: LCP/TPU/Aramid Braid/LDPE

5 Attenuation @ 1310 nm (dB/km) < 0.45
6 Attenuation @ 1550 nm (dB/km) < 0.35
7 Optical Propagation Loss


Performed 100% on all cables at 1310nm and 1550nm
8 Tensile Strength (lbs) 750 lbs
9 Safe Working Load (SWL) Recommended guideline – 15% (113 lbs); SWL is application and environment dependent
10 Minimum Bend Radius (MBR) Recommended guideline – 70 mm (2.75”); MBR is application and environment dependent
11 Weight in Air 9.52 g/m (6.4 lbs/1,000 ft)
12 Specific Gravity 0.99
13 Tensile Strength Measurement Qualification by Calculation
14 Serialization All cables will have Cable ID number for traceability
15 Test Data A package detailing optical propagation will be supplied with each shipment


OD (P/N): 3.5mm (1-SM-A-27-O-55-X-137)

For color designation add the following to Cable P/N: Blue (-BLU); Brown (-BRN); Green (-GRN); Gray (-GRA); Orange (-ORN); Red (-RED); Violet (-VIO); White (-WHT); Yellow (-YEL); Black (-BLK)

Categories of Fiber-Optic Tethers

Standard ROV Tethers: Designed for general underwater applications, these tethers provide robust performance with essential features for most ROV operations.

High-Strength Tethers: These are reinforced with additional materials to withstand extreme conditions and mechanical stress, suitable for deep-sea explorations.

Miniature Tethers: Ideal for compact ROVs, these tethers are lightweight and flexible without compromising on strength and data transmission capabilities.

Hybrid Tethers: Combining fiber optics with electrical conductors, these tethers are versatile and can handle multiple types of signals simultaneously, perfect for advanced ROVs with various sensors and tools.

Key Features of Linden Photonics’ Fiber-Optic Tethers

High Tensile Strength: Ensures the tether can withstand significant forces without breaking.

Flexibility: Allows for easy maneuverability of ROVs in tight or complex underwater environments.

Lightweight Design: Minimizes drag and enhances the ROV’s operational efficiency.

High Data Transmission Rates: Supports real-time video and data feeds from the ROV to the control station.

Durability: Resistant to harsh underwater conditions, including pressure, saltwater corrosion, and mechanical abrasion.

FAQs about Linden Photonics ROV Fiber-Optic Tethers

Q1: What makes Linden Photonics tethers suitable for underwater use?

A1: Linden Photonics tethers are specifically engineered for underwater applications, featuring high tensile strength, flexibility, and resistance to harsh marine environments, ensuring reliable performance for ROV operations.

Q2: Can these tethers be customized for specific ROV models?

A2: Yes, Linden Photonics offers customization options to tailor tethers to specific requirements, including length, strength, and connector types to match various ROV models and applications.

Q3: How do I determine the right type of tether for my ROV?

A3: Consider factors such as the operational depth, the type of data transmission needed, the mechanical stress the tether will face, and the specific application of your ROV. Consulting with Linden Photonics experts can also provide tailored recommendations.

Q4: What is the typical lifespan of a Linden Photonics ROV tether?

A4: The lifespan varies based on usage and environmental conditions, but these tethers are designed for long-term durability and can last several years with proper maintenance.

Q5: Are there maintenance requirements for these tethers?

A5: Regular inspection for physical damage, proper cleaning after use in saltwater, and ensuring correct handling and storage can prolong the life of the tether.

Buying Guide

Step 1: Identify Your Needs

Operational Depth: Determine the maximum depth your ROV will operate at.

Data Transmission: Assess the amount and type of data you need to transmit.

Environmental Conditions: Consider factors like water salinity, temperature, and presence of debris.

Step 2: Choose the Right Tether Category

Standard: For general-purpose ROV use.

High-Strength: For deep-sea and high-stress environments.

Miniature: For small, agile ROVs.

Hybrid: For complex operations requiring multiple signal types.

Step 3: Customization

Contact Linden Photonics to discuss customization options if standard products do not meet your needs. They can customize length, strength, and other specifications.

Step 4: Budget Considerations

Ensure that the tether you choose fits within your budget while meeting all necessary operational requirements.

Where to Buy

Linden Photonics’ ROV fiber-optic tethers can be purchased directly from their official website or through authorized distributors. Here are some options:

Official Website: Visit the Linden Photonics website for the latest products, customization options, and direct purchase.

Authorized Distributors: Check with certified distributors who can provide local support and possibly better shipping terms.

Industry Trade Shows: Attend marine and underwater technology trade shows where Linden Photonics often showcases their latest products.

Linden Photonics’ ROV fiber-optic tethers are a critical component for reliable and efficient underwater operations. By understanding the different categories, key features, and following the buying guide, you can select the perfect tether for your needs. Always purchase from trusted sources to ensure you receive genuine, high-quality products.

For more information or to discuss your specific requirements, visit the Linden Photonics website or contact their customer support team.

Contact Linden Photonics to get a quote or Call Us at (978) 392-7985


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