300℃ Large core optical fiber - Multi-mode PI fiber - 105μm to 800μm polyimide fiber - Pure silica core fiber optic

This product is a high-performance optical fiber product developed and manufactured by Beijing Dacheng Yongsheng Technology Co., Ltd. This product is specifically engineered for extreme temperature environments and versatile industrial optical signal or energy transmission requirements. It features a pure silica core, a fluorine-doped silica cladding, and an outer coating layer made of polyimide (PI), which offers exceptional thermal stability.

Product Introduction of OFSCN® Polyimide Large-Core Optical Fiber

The operating wavelength range of this fiber series is extremely broad, fully covering 200 nm to 2400 nm, and it is optimized for different bands by offering both low-OH (IR) and high-OH (UV) variants. To withstand complex and harsh deployment conditions in the field, Beijing Dacheng Yongsheng Technology Co., Ltd. also provides finished assemblies using loose tube or tight buffer packaging processes with materials such as seamless stainless steel tubes (304, 316L, etc.), ETFE, and PFA, ensuring robust protection against mechanical damage and corrosion.

Product brand is OFSCN®.

Note: The content of this information is for reference only. Due to different production batches, there may be slight deviations in the specifications.

Key Product Features of OFSCN® Polyimide Large-Core Optical Fiber

• Extreme Temperature Range: The fiber operates stably over a wide temperature range from -200°C to 300°C, meeting the requirements of severe industrial environments.
• Excellent Optical Transmission Performance: The spectrum covers 200 nm to 2400 nm (spanning UV, visible, and near-infrared bands), with optical attenuation at 850 nm controlled at ≤5 dB/km to ensure efficient signal transmission.
• Versatile Large-Core Specifications: Available in various large-core sizes from 105 µm to 800 µm, effectively enhancing the coupling efficiency and power-handling capability for high-power lasers.
• Superior Mechanical Strength: The fiber has passed proof-testing at ≥100 Kpsi, demonstrating excellent tensile strength and fatigue life.
• Multi-Material Custom Packaging: Supports protective jackets including seamless stainless steel tubes, ETFE, and PFA in either loose tube or tight buffer configurations, significantly boosting crush, tensile, and chemical resistance.

Technical Specifications of OFSCN® Polyimide Large-Core Optical Fiber

To facilitate product selection, the geometric specifications and general technical indicators of this fiber series are summarized below:

1. Geometrical Dimensions and Models

2. General Optical and Physical Parameters

Application Scenarios and Industry Analysis of OFSCN® Polyimide Large-Core Optical Fiber

Based on the product's unique physical properties—such as its large core, tolerance to high and low temperatures (-200 to 300°C), and ultra-broad spectrum —typical application scenarios and target industries include:

1. Typical Application Scenarios

• High-Power Laser Delivery: The large-core and pure silica core design allow the fiber to withstand extremely high optical energy densities, making it suitable for industrial laser welding, cutting, cleaning, and medical laser surgery energy guidance.
• High/Low-Temperature Industrial Sensors: Acts as the core transmission medium for fiber optic temperature, pressure, and strain sensors in harsh environments like industrial boilers, metallurgical blast furnaces, or cryogenic liquefied natural gas (LNG) storage tanks.
• Spectroscopic Analysis & Online Monitoring: Since it covers deep UV to near-IR wavelengths, it can be utilized as optical probes or light guide bundles in spectrophotometers, online chemical composition analyzers, and environmental emission gas monitoring systems.
• Corrosive & High-Stress Environments: Enhanced with stainless steel tubing, ETFE, or PFA jacketing, the fiber ensures stable signal and power delivery in acid/alkali environments and downhole oil/gas drilling applications where high mechanical stress and chemical exposure are present.

2. Primary Industries

• Aerospace & Defense: Monitoring of aircraft and rocket engine compartments, as well as airborne high/low-temperature sensing systems.
• Energy & Petrochemicals: Geothermal exploration monitoring, downhole oil and gas well temperature/pressure logging, and Distributed Temperature Sensing (DTS) systems.
• Medical Device Manufacturing: Delivery systems for medical Holmium (Ho:YAG) and Thulium (Tm:YAG) lasers, clinical endoscopes, and biomedical spectroscopic diagnostic equipment.
• Industrial Automation & Laser Processing: Manufacture of high-power industrial lasers, semiconductor wafer lithography and inspection equipment, and intelligent manufacturing sensor networks.
• Research Institutes & Academic Laboratories: High-energy physics research, advanced optical system setup, and material spectroscopy testing.