AOH-OCTOPUZ

All-Optical Hydrophone Array System

Advanced underwater acoustic sensing with power-over-fibre technology. No electrical power on the sensing line — 100km+ range on a single-mode fibre.

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Technology

Product Overview

The AOH-OCTOPUZ is an advanced underwater acoustic sensing network developed by PhoenixZ, designed to deliver exceptional range, sensitivity, and reliability in subsea monitoring. The system converts the output of standard electrical hydrophones into optical signals using a proprietary passive transducer, creating a fully optical sensing link that transmits high-fidelity acoustic data over distances exceeding 100km through a single-mode fibre — with no electrical power required along the sensing line.

Optical-Only Signal Path

No electrical power required on the sensing line. The optical-only sensing path enables simple, low-cost deployment and service-free operation.

100km+ Range

Ultra-long-range operation on a single-mode fibre optic cable. The Remote Terminal Unit (RTU) can be located over 100 kilometres from the sensing point.

High Sensitivity

Sensitivity of -190 dB re 1V/µPa (±3 dB) with 100–120 dB dynamic range and low noise floor. Compact and lightweight — deployable by a two-person team or ROV.

01 Optical-only signal path — zero electromagnetic interference

02 Ultra-long-range operation exceeding 100km on single-mode fibre

03 High sensitivity with low distortion acoustic performance

04 Compact and lightweight — 2-person or ROV deployable

05 Standard Ethernet output for seamless data integration

06 Corrosion-resistant construction for harsh marine environments

Applications

Where AOH-OCTOPUZ Operates

Defence & Security

Seabed surveillance networks, anti-submarine warfare support, and autonomous underwater platform sensing.

— Seabed surveillance
— Anti-submarine warfare
— Autonomous platforms

Oceanography

Marine ecosystem monitoring, ambient noise studies, and seismic event detection with high-fidelity underwater acoustic data capture.

— Marine ecosystems
— Ambient noise studies
— Seismic monitoring

Offshore Energy

Long-range monitoring of pipelines, subsea assets, and structural integrity in demanding marine conditions.

— Pipeline monitoring
— Structural integrity
— Subsea assets

Wet End

Optical Hydrophone

The AOH-OCTOPUZ hydrophone converts underwater acoustic signals into optical data using a proprietary passive transducer based on liquid crystal technology. Housed in a corrosion-resistant aluminium, acrylic, and stainless steel enclosure, it is compact enough for two-person deployment or ROV installation.

Download Technical Drawing (PDF)

Hydrophone Specifications

Housing: Aluminium / Acrylic / SS
Diameter: ⌀100mm
Length (without hydrophone): 200mm
Length (with hydrophone): 600mm
Weight: 2kg / Neutral buoyancy
Cable: >100km SM Fibre
Sensitivity: -190 dB re 1V/µPa (±3 dB)
Dynamic Range: 100–120 dB
Noise Floor: 40–60 dB re 1 µPa²/Hz
Max Acoustic Input: 190–200 dB re 1 µPa

RTU Specifications

Output: Ethernet
Power Supply: ±12–18V DC / 24V / 240V AC
Power per Channel: 12W
Max Channels: 8
Connector: 2× LC-APC Duplex SM
Form Factor: 19" Rackmount 4U
Dimensions: 482.6 × 177.8 × 255mm

Dry End

Remote Terminal Unit

The RTU receives optical signals from the hydrophone array and converts them to standard Ethernet output for integration with existing data systems. Housed in a standard 19-inch 4U rackmount chassis, it supports up to 8 channels and can be located over 100km from the sensing point.

Download Technical Drawing (PDF)

Product Video