Breaking the high-temperature limit: OFSCN® 120°C multimode heat-resistant optical fiber - the first choice for industrial sensing and communications

Introduction: Solve your core pain points

In harsh industrial, power, oil and gas, and aerospace environments, ordinary optical fibers frequently fail due to temperature fluctuations and mechanical stress, seriously affecting system stability and data reliability.

OFSCN® , a subsidiary of Beijing Dacheng Yongsheng Technology (DCYS) , has designed 120°C multimode, high-temperature-resistant optical fiber specifically to address this challenge . Not only does it offer excellent temperature resistance, but it also offers highly flexible customization options, ensuring your system maintains stable and efficient operation in high-temperature environments.

Product official website link : https://www.ofscn.org/optical-fibers/high-temperature-120-mm.html

1. Core Features and Excellent Performance

Feature Classification	Key indicators and advantages	Customer benefits (why choose it?)
Extreme temperature resistance range	Operating temperature: -50°C to +120°C	Ensure long-term stability and data reliability in environments ranging from extremely cold to very hot.
Reliable coating	Use modified acrylate coating , coating diameter 245± 10 μm	Compared with traditional coatings, it has better heat resistance while maintaining good flexibility and easy peelability.
Industrial-grade mechanical strength	Tensile strength up to 100kpsi .	Able to withstand the high stress of industrial wiring, pulling and installation, it is durable.
Multimode (MM) high bandwidth	Optional 50/125 μm or 62.5/125 μm core /cladding .	It is ideal for short-range (hundreds of meters) high-speed data communications and distributed sensing systems.
Excellent optical performance	Attenuation @850nm < 4.0dB/km ; @1310nm < 2.0dB/km .	Ensures low signal loss, high data transmission quality, and remains stable even during temperature changes.

2. Customer Selection Questions and Answers (Customization Guide)

customization when choosing specialty optical fibers . OFSCN® 120°C multimode optical fibers offer a variety of customization options:

Question 1: Which fiber core/cladding specifications should I choose?

• 50/125 μm : Suitable for higher bandwidth requirements and is the preferred choice for modern data centers and high-speed sensing .
• 62.5/125 μm : It has a larger numerical aperture and better coupling efficiency, and is more suitable for occasions with low light source power or loose requirements on connection loss .

Question 2: What is the purpose of carbon coating? Do I need it?

• Non-carbon coating : Suitable for most environments.
• Optional carbon coating: A carbon coating acts as an inner coating, providing additional protection against hydrogen damage and microbending losses . If your application involves long-term exposure to hot and humid environments, hydrogen (such as in oil and gas wells), or requires extremely high fiber lifespan, a carbon coating is highly recommended.

Question 3: How to choose between step refractive index and gradient refractive index?

• Graded-index: Suitable for data communications, it can effectively reduce intermodal dispersion and increase transmission bandwidth.
• Step-index: Common in certain fiber optic sensing and high numerical aperture applications.

Question 4: What is the compatibility of optical fiber?

• OFSCN® 120°C optical fiber features a standard 125 μm cladding diameter and is fully compatible with existing mainstream fiber optic connectors, fusion splicers, and optical components. We also offer custom manufacturing services, from bare fiber to high-temperature patch cords/pigtails, as well as specialty optical cables (such as metal-jacketed fiber optic cables (FIMT)).

3. Typical Application Scenarios

This high-reliability fiber is the ideal solution for high-temperature applications requiring continuous monitoring and data transmission:

1. Energy & Power: Temperature and vibration monitoring inside power plants, generators, transformer windings, and steam turbines.
2. Oil and Gas: Downhole sensing and monitoring, distributed temperature and strain monitoring of oil and gas pipelines.
3. Industrial Automation: Process control and sensing systems in furnaces, ovens, and heat treatment equipment.
4. Transportation: Sensing and networking near heat sources such as automobile engine compartments and rail transit braking systems.
5. Aerospace and military: temperature and strain data acquisition for aircraft engines and high-performance electronic equipment.

Contact us now

Choosing OFSCN® 120 μm multimode high-temperature optical fiber means you're choosing stability, reliability, and efficiency under extreme heat challenges. As a professional specialty optical fiber manufacturer, Beijing Dacheng Yongsheng Technology (DCYS) is committed to providing high-quality products, flexible customization services, and stable supply guarantees.

Contact us now for technical specifications, samples, or a custom quote:

• Beijing Dacheng Yongsheng Technology (DCYS)
• Product website: https://www.ofscn.org/optical-fibers/high-temperature-120-mm.html