Light in the Furnace: OFSCN® 700°C Specialty Fiber Optic Patch Cord — Optical Attenuation and Gold Coating Durability

In fields like metallurgy, aerospace, and nuclear research, equipment can be exposed to ultra-high temperatures of a sustained 700 degrees. At this temperature, any organic material rapidly carbonizes, and traditional Polyimide coated fibers (limit approximately 300 degrees) cannot survive. The challenge for communication and sensing links has escalated from "preventing degradation" to the level of "material survival."

Beijing Dacheng Yongsheng Technology Co., Ltd. (DCYS)'s OFSCN® 700°C Fiber Optic Patch Cord overcomes this challenge with its breakthrough core technology: Gold Coated Fiber. This ensures that even within a 700 degree "furnace," your data link remains a stable and lasting source of light.

Core Technology: The Leap from Polymer to Metal

The key to achieving 700 degree temperature resistance lies in upgrading the fiber's core protective layer from a polymer to a metal: pure gold.

1. Durability of the Gold Coating:
   • Chemical Inertness: Pure gold is an inert metal; it does not oxidize or decompose at 700 degrees. The bond between the gold layer and the quartz core is stable, eliminating the issue of traditional coatings delaminating or outgassing at high temperatures.
   • Low Outgassing: Gold coated fiber exhibits an extremely low outgassing rate in high-temperature and high-vacuum environments, making it virtually the only option for optical connection within aerospace and scientific vacuum chambers (such as 500 degree ultra-high vacuum furnaces).
2. The Secret to Optical Attenuation:
   • Stress Isolation: The gold coating maintains some flexibility even at 700 degrees. Crucially, the stainless steel seamless tubing armor we employ is designed with a precise stress decoupling structure internally. This allows the thermal expansion stress of the external armor to be effectively absorbed and isolated from the core, minimizing micro-bending loss.
   • Long-Term Stability: Compared to Polyimide fiber, whose performance gradually degrades above 300 degrees, the optical attenuation (such as dB per kilometer) curve of gold coated fiber shows exceptional flatness at its 700 degree design temperature, enabling stable, continuous operation for thousands of hours.

Armor Synergy: The "Steel Guardian" at 700°C

The fiber's intrinsic temperature resistance is just the first step; the durability of the entire link requires robust armor coordination:

• 316L Stainless Steel Armor: The exterior of the patch cord uses corrosion-resistant 316L stainless steel seamless tubing, which withstands thermal creep and chemical erosion at the 700 degree high temperature.
• All-Metal Connection: Paired with proprietary 700 degree grade all-metal/all-ceramic connectors (such as FC or SC interfaces), this ensures that the mechanical precision and end-face alignment of the connector do not degrade at 700 degrees due to material thermal expansion differences.

Conclusion: Your Assurance in Extreme Environments

By choosing the OFSCN® 700°C Fiber Optic Patch Cord, you are choosing more than just a 700 degree temperature rating. You are selecting an extreme-environment communication and sensing solution based on Gold Coated Fiber technology and verified through long-term high-temperature aging tests. It ensures that your critical data remains stable, accurate, and durable within metallurgical furnaces, engine test beds, or nuclear reaction zones.

Manufacturer: Beijing Dacheng Yongsheng Technology Co., Ltd. (DCYS) Website: https://www.ofscn.org/ Related Product Link: https://www.ofscn.org/patch-cords/high-temperature-700.html