1310 nm Single Mode PYROCOAT® Low / High Temperature Optical Fibre
- Technology
- Speciality fibre
- Partner
- Lightera (formerly OFS)
This single-mode optical fibre is engineered for harsh thermal environments where conventional fibres may fail. Its thin, hard PYROCOAT® polyimide coating supports stable performance from cryogenic conditions to high operating temperatures. The fibre is suitable for distributed sensing applications such as Brillouin-based strain and temperature sensing and Rayleigh-based acoustic sensing. It operates at standard 1310 nm and 1550 nm wavelengths for compatibility with common optical instrumentation and telecom equipment. The construction also provides resistance to chemicals and abrasion, supporting use in demanding industrial settings. With low attenuation, high proof strength, and a slim 155 µm coated diameter, it is well suited for long-term deployments where reliability and durability are critical.
Designed for harsh environments, this 1310 nm single-mode optical fibre combines standard telecom-compatible optical behaviour with a high-performance PYROCOAT® polyimide coating. It is intended for applications where extreme temperatures, chemical exposure, abrasion resistance, and long-term stability are critical, including distributed sensing, industrial monitoring, and specialised communication links.
Range features
A high level overview of what this range offers
- PYROCOAT® polyimide coating: Thin, hard coating designed for extreme heat and cold while also improving resistance to chemicals and abrasion.
- Broad temperature capability: Suitable for operation from deep sub-zero conditions up to about +300 °C, with typical long-term use around +250 °C.
- Single-mode at 1310 nm and 1550 nm: Compatible with standard distributed sensing systems and telecom-style optical equipment.
- High mechanical strength: Proof-tested to at least 200 kpsi (1.38 GPa) for dependable handling and installation performance.
- Low attenuation: Optical loss of ≤ 0.7 dB/km at 1310 nm and ≤ 0.6 dB/km at 1550 nm supports long-distance transmission and sensing.
- Slim 155 µm profile: Compact coated diameter helps with routing, embedding, and use in space-constrained assemblies.
Built for harsh thermal conditions Supports applications spanning cryogenic environments through to high-temperature industrial processes.
Optimised for sensing Suitable for DTS, DAS, and distributed strain/temperature sensing where fibre stability is essential.
Easy system compatibility Standard 125 µm cladding and 1310/1550 nm operation help integration with common fibre-optic components.
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for 1310 nm Single Mode PYROCOAT® Low / High Temperature Optical Fibre
1310 nm Single-Mode PYROCOAT Optical Fibre – Low/High Temperature
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All the variants in the range and a comparison of what they offer
Parameter | Value |
Product Description | Single-mode fibre with PYROCOAT® coating for low and high temperature applications |
Core Material | Germanium-doped synthetic SiO₂ (silica) |
Cladding Material | Silica (SiO₂) |
Coating Material | PYROCOAT® polyimide |
Core/Cladding Offset | ≤ 0.5 µm |
Cladding Diameter | 125 ± 1 µm |
Cladding Non-Circularity | ≤ 2.0 % |
Coating (Outer) Diameter | 155 ± 5 µm |
Coating Concentricity | ≥ 80 % |
Type | Single-mode (SM) |
Fiber Cutoff Wavelength | ≤ 1310 nm |
Mode Field Diameter @ 1310 nm | 8.9 ± 0.4 µm |
Attenuation @ 1310 nm | ≤ 0.7 dB/km |
Attenuation @ 1550 nm | ≤ 0.6 dB/km |
Operating Temperature Range | –65 °C to +300 °C |
Long-Term Use (typical) | Up to ~20 years continuous at +250 °C (application-dependent) |
Proof Test Level | ≥ 200 kpsi (≥ 1.38 GPa) |
Part Number (Order Code) | F78910 |
FAQs
for 1310 nm Single Mode PYROCOAT® Low / High Temperature Optical Fibre
PYROCOAT® is a proprietary polyimide coating designed to protect the fibre in demanding environments. Compared with standard coatings, it offers much better resistance to high temperatures, chemicals, and abrasion, helping preserve fibre integrity and long-term optical performance.
The fibre is specified for operation from approximately –65 °C up to +300 °C. It can tolerate very high temperatures, but for long-duration service the typical recommendation is to stay around +250 °C for the best long-term reliability.
Yes. It is well suited to distributed sensing applications including DTS, DAS, and distributed strain and temperature sensing. Its single-mode performance at 1310 nm and 1550 nm, combined with high thermal durability, makes it appropriate for harsh deployment environments.
Yes. The fibre supports standard operation at 1310 nm and 1550 nm, making it compatible with common single-mode optical sources, receivers, and related equipment used in sensing and communication systems.
Yes. The 125 µm cladding makes it compatible with standard fibre alignment and splicing practices. Because the PYROCOAT® polyimide coating is thinner and more heat resistant than typical coatings, suitable stripping and handling methods should be used during preparation.
Key characteristics include a mode field diameter of 8.9 ± 0.4 µm at 1310 nm, attenuation of ≤ 0.7 dB/km at 1310 nm and ≤ 0.6 dB/km at 1550 nm, standard 125 µm cladding, and a slim 155 ± 5 µm coated diameter. It is also proof-tested to at least 200 kpsi for strong mechanical performance.
