Singlemode Fibers Metal Coated Series: Gold/Aluminum

Singlemode Fibers Metal Coated Series: Gold/Aluminum

The featured Singlemode (SM 9/125) metal coated fiber was designed to provide optimum performance in both the 1310 nm and 1550 nm wavelength operating ranges, according to G.652 A/B standards. The fiber is supplied with either 24 kt Gold or Aluminum coatings. As an electric conductor, these types of coatings provide the user with the ability to terminate the fiber directly to the coating, supporting hermetically sealed assemblies. Gold and Aluminum coated fibers are most capable of withstanding high temperatures and harsh environ- ments compared to polymer coated fibers. A dedicated manufacturing process of these fibers result in low stress corrosion susceptibility, and thus offering an improved mechanical protection to the optical fiber when used in the most challenging harsh environments.

All metal coated Singlemode fibers are 100 % quality tested to stringent test procedures in accordance with the Telecommunications Industry Association (TIA/EIA) and international Fiber Optic Test Procedures (FOTP). Custom specific tests to verify application requirements are available. 

Meeting the need of our customer

Heracle is focused on development and manufacturing of custom specialty optical fibers required for sophisticated applications serving the industrial, medical and optical sensor markets. In addition to a wealth of product, system and marketing experience in the fiber optics industry, the Heracle team and network is well versed in:

Preform design and manufacturing, optical fiber drawing and coating technologies, characterization of optical and mechanical fiber parameters, best practices and international standards.

The company is located in Jena, Germany, and provides customers worldwide with a personal bridge to the innovation and break- throughs of the optical fiber industry across the globe.


Metal coated singlemode optical fibers are typically used under extreme conditions such as:

  • Aircraft, missile, rocket, turbine & jet engine monitoring
  • Radiation, caustic & corrosive environments
  • Material fatigue sensing applications • High power laser delivery systems
  • Ultra high vacuum applications
  • Semiconductor manufacturing


  • Wide operating temperature range • Hermetic & sterilizable

  • Directly solderable for vacuum feedthroughs & laser diode pigtailing

  • Radiation resistant

  • Low outgassing

  • Resistant to organic solvents