Gold-coated Optical Fiber - Single-mode Gold-plated Optical Fiber - Multimode Gold-coated Fiber Optic - Polarization-maintaining Gold-plated Optical Fiber - Sensing/Communication Fiber - Picture Parameters - Manufacturer Brand Price - DCYS - ofscn.org

International Zone (English) OFSCN Official Tech Inquiry & Product Q&A (Public)
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Iven | www.ofscn.org Last Updated: 01 March 2026

This product is a gold-coated optical fiber, with a coating layer made of gold that can withstand high temperatures of 700/650℃ and low temperatures down to -269℃. It is available in single-mode or multimode options, with multimode fiber core diameters of 50/62.5 microns, in step-index or graded-index configurations. The fiber core is made of silica.

This is a companion discussion topic for the original entry at https://www.ofscn.org/optical-fibers/gold-coated.html
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This is a professional technical summary regarding the OFSCN® Gold-coated Optical Fiber for high-temperature and extreme environment applications.

Technical Overview

The OFSCN® Gold-coated Optical Fiber is designed to operate in extreme thermal conditions where standard polymer coatings (like Acrylate or Polyimide) would fail. By utilizing a metallic gold coating, this fiber achieves superior thermal stability and hermeticity.

Key Specifications:

  • Temperature Range: Single-mode (SM) fibers withstand -270°C to +700°C; Multimode (MM) fibers withstand -270°C to +650°C.
  • Fiber Types: Available in Single-mode (G.652D or G.657 A2 bend-insensitive) and Multimode (50/125μm or 62.5/125μm).
  • Dimensions: Standard cladding diameter of 125μm with a gold coating layer bringing the total diameter to approximately 155μm.
  • Core Material: Doped silica (standard) or pure silica core (customizable for radiation resistance).
  • Hermeticity: The gold layer provides an excellent barrier against hydrogen and moisture, preventing fiber aging in harsh chemical environments.

Product Visuals

OFSCN® Gold-coated Optical Fiber Tray
OFSCN® Gold-coated Optical Fiber Tray360×360 46.5 KB

OFSCN® Gold-coated Optical Fiber Close-up
OFSCN® Gold-coated Optical Fiber Close-up768×144 37.9 KB

Applications

This fiber is primarily used for:

  1. High-Temperature Sensing: Fabrication of high-temperature FBG sensors or distributed temperature sensing (DTS/OFDR) in oil and gas or aerospace.
  2. Cryogenic Environments: Superconducting magnet monitoring and liquid nitrogen/helium temperature sensing.
  3. Hermetic Packaging: Soldering directly to metal components to create vacuum-tight feedthroughs.

For detailed technical data sheets, please refer to the official product page:
OFSCN® Gold-coated Optical Fiber Technical Details