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Multicore Single Mode Fiber Optic Underwater Cable | Subsea Signal

Published on:2026-05-24 Click:16

Multicore Single Mode Fiber Optic Underwater Cable | Subsea Signal

Multicore single-mode fiber optic underwater cable for subsea signal transmission. OS2 fibers, PUR jacket, for ROV, ocean observatory, and subsea LAN high-bandwidth fiber links.

Product introduction

Multicore Single-Mode Fiber Optic Underwater Cable for Subsea Signal Transmission

The multicore underwater single-mode fiber optic cable provides high-bandwidth optical signal transmission in subsea environments. OS2 single-mode fibers (9/125 μm) support transmission of 10 Gbps, 40 Gbps, 100 Gbps, and DWDM wavelength-division multiplexed signals over kilometre-scale cable runs with essentially zero bandwidth limitation. Suitable for ocean observatories, ROV high-bandwidth tethers, and subsea LAN infrastructure.

ParameterSpecification
Fiber TypeOS2 Single-mode (9/125 μm ITU-T G.652.D)
Fiber Count2 / 4 / 6 / 8 / 12 / 24 (specify)
BufferLoose-tube gel-filled or dry blocked
Strength MemberKevlar aramid yarn + optional central steel
Outer JacketPolyurethane (PUR)
Attenuation≤0.2 dB/km @ 1550 nm
Depth RatingUp to 6,000 m
ColourBlack / yellow

Key Applications

  • Ocean observatory subsea fiber backbone
  • ROV high-bandwidth video and data tether (fiber section)
  • Subsea LAN fiber patch cable
  • Deep-sea scientific instrument fiber network
  • Subsea repeaterless DWDM link

Request datasheet, custom length, or OEM pricing: sales@rovcable.com -- Shanghai Kabel Intelligence Technology Co., Ltd.

Frequently Asked Questions

What is the difference between OS1 and OS2 single-mode fiber?

OS2 (ITU-T G.652.D) has a lower attenuation (≤0.2 dB/km at 1550 nm vs ≤0.35 dB/km for OS1) and is designed for outside plant (OSP) applications including direct burial and underwater deployment. OS1 is for indoor use only. For any underwater cable, always specify OS2.

How many fibers do I need for a typical ROV tether?

For a standard ROV with HD video and Ethernet: 2 fibers (one Tx, one Rx) support a single 10 Gbps link or multiple 1 Gbps CWDM channels. 4 fibers provide redundancy. 6--12 fibers are used in work-class ROVs with multiple HD/4K cameras and high-bandwidth control links, plus spare fibers for future expansion.

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