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Single Core Fiber Optic Underwater Connectors -- Simplex Subsea Fiber Connector | IP68 | 7000m

Published on:2026-05-24 Click:25

Single Core Fiber Optic Underwater Connectors -- Simplex Subsea Fiber Connector | IP68 | 7000m

Shanghai Kabel Intelligence Technology Co., Ltd single-core (simplex) fiber optic underwater connectors. Single SM or MM fiber channel, IP68, 7000m depth. For simplex subsea sensor links and fiber measurement systems.

Product introduction

Single-Core Fiber Optic Underwater Connectors -- Simplex Subsea

Shanghai Kabel Intelligence Technology Co., Ltd single-core fiber optic underwater connectors provide a single wet-mateable simplex fiber channel for subsea applications where only one optical path is required at the connection point. With a 7,000 m depth rating, IP68 sealing, and zirconia ceramic ferrule, these connectors deliver reliable optical performance in the most demanding underwater environments -- from shallow ROV operations to full-ocean-depth scientific instruments.

Available in single-mode (9/125 um, PC or APC polish) and multimode (50/125 or 62.5/125 um) fiber types. Can be paired with power contacts in a hybrid configuration on request.

Specifications

Parameter Value
Fiber channels 1 (simplex)
Depth rating 7,000 m
IP rating IP68
Fiber type SM 9/125 um (PC polish) / SM 9/125 um (APC, 8 deg) / MM 50/125 um / MM 62.5/125 um
Ferrule material Zirconia ceramic (ZrO2), precision-lapped
Insertion loss < 0.3 dB typical, < 0.5 dB max per mating
Return loss (SM PC) > 45 dB
Return loss (SM APC) > 65 dB
Mating cycles 500+ (fiber only connector)
Shell Anodized aluminium (standard) / Titanium Grade 5 (option)
Sealing Dual O-ring + fiber ferrule face seal
Mount styles Bulkhead (panel flange) / In-line (cable assembly)
Hydrostatic test 600 psig per batch, certificate supplied
Operating temperature -20 to +85 degC

When to Choose a Single-Core Fiber Connector

  • Simplex measurement systems: Many oceanographic sensors (fluorometers, turbidity sensors, backscatter meters) have a single fiber output that connects directly to an analyser or data logger -- one fiber channel is all that is needed.
  • WDM (Wavelength Division Multiplexing) links: When wavelength-multiplexed signals carry multiple data streams on a single fiber, only one physical fiber channel is required at the connector.
  • Monitoring-only links: Passive optical sensing systems (distributed temperature sensing, strain sensing) use simplex fiber for the sensing element.
  • Cost-optimised simplex comms: Where link direction is always one-way (e.g., a simplex video uplink from a seabed camera), a single-core connector is sufficient.

Applications

  • Subsea fluorometer and backscatter sensors with single fiber output
  • Distributed temperature sensing (DTS) cable termination connectors
  • Single-fiber WDM link termination on subsea nodes
  • Passive optical sensor arrays (Brillouin, Rayleigh, FBG)
  • ROV simplex fiber inspection camera downlink
  • Single-channel fiber gyro (FOG) output connector on AUV

Email: sales@rovcable.com | www.rovconnector.com
Address: No.100 Yezhuang Road, Fengxian District, Shanghai, China 201415

Frequently Asked Questions

What is the difference between PC and APC polish on a single-mode ferrule?

PC (physical contact) polish is flat -- return loss greater than 45 dB. APC (angled physical contact) uses an 8-degree angled ferrule face -- return loss greater than 65 dB. APC is preferred for analog fiber links (cable TV, RF over fiber, coherent laser sensors) and dense WDM systems where back-reflection causes noise. For standard digital communications, PC polish is sufficient. Note: PC and APC ferrules are NOT cross-compatible -- both ends of a fiber link must use the same polish type.

Can a single-core fiber connector be combined with power contacts?

Yes. We offer a 1F2P hybrid variant (1 fiber + 2 power contacts) for applications where the simplex fiber link and power supply must share one penetration. Contact sales@rovcable.com for a custom configuration quotation.

How is the fiber aligned during wet-mating?

Precision zirconia ceramic ferrules in a spring-loaded alignment sleeve ensure core-to-core alignment to within 1 micron. The alignment sleeve is protected by a water-displacement seal -- when the connector is mated, the seawater film between the ferrule faces is displaced by the spring-loaded contact force before the ferrules fully seat.

Applications

  • Hybrid power and fiber optic transmission for ROV and AUV umbilical systems
  • Subsea communication networks requiring combined electrical and optical channels
  • Ocean observatory data backhaul with fiber optic broadband capability
  • Offshore platform subsea control and monitoring with photoelectric sensors
  • Underwater video systems requiring high-bandwidth fiber optic data links

Customization Options

  • Custom fiber count and power conductor configurations for specific system needs
  • Alternative connector body materials suited to deployment environment
  • Direct moulding to customer-specified hybrid cable assemblies
  • Certified optical insertion loss testing and pressure testing available
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