Elliptical Core Polarization-Maintaining Fiber (ECF)
The Elliptical Core Polarization-Maintaining Fiber (ECF) delivers excellent temperature stability and birefringence performance, making it a pivotal component for high-precision polarization-related optical devices. By improving the elliptical core structure and intricately optimizing the core and cladding geometry, this advanced fiber significantly enhances overall structural uniformity and birefringence reliability.
As a highly specialized geometric birefringent polarization-maintaining fiber, the ECF is inherently less affected by ambient temperature fluctuations compared to traditional stress-induced fibers, offering superior temperature stability across extreme operational environments.
Product Applications
- Fiber optic gyroscope
- Optical fiber current transformer
- Fiber laser and amplifier
Product Features
- Low loss and high bending properties
- Good geometric uniformity
- High stability and reliability in use
- Temperature insensitive
Optical Fiber Structure
Product Specification
| Properties | Unit | ECF13-125-U25 | ECF13-80-U16 | ECF15-80-U13 | ECF15-80-U16 |
|---|---|---|---|---|---|
| Optical Properties | |||||
| Working wavelength | nm | 1310 | 1310 | 1550 | 1550 |
| Cutoff wavelength | nm | 1100 ~ 1290 | 1100 ~ 1290 | 1290 ~ 1520 | 1290 ~ 1520 |
| Mode field diameter | µm | 6.0 ± 1.0 | 6.0 ± 1.0 | 6.5 ± 1.0 | 6.5 ± 1.0 |
| Attenuation | dB/km | ≤ 1.0 | ≤ 1.0 | ≤ 1.0 | ≤ 1.0 |
| Beat length | mm | 3.0 ~ 80.0 | ≤ 3.0 | ≤ 4.0 | ≤ 4.0 |
| Typical crosstalk value | dB | ≤ -25 (100m) | ≤ -25 (1000m) | ≤ -25 (1000m) | ≤ -25 (1000m) |
| Geometric Properties | |||||
| Cladding diameter | µm | 125.0 ± 1.0 | 80.0 ± 1.0 | 80.0 ± 1.0 | 80.0 ± 1.0 |
| Coating type | / | Double UV curing acrylic resin | |||
| Coating diameter | µm | 245.0 ± 3.0 | 168.0 ± 3.0 | 135.0 ± 2.0 | 168.0 ± 3.0 |
| Cladding out-of-roundness | % | ≤ 2.0 | ≤ 2.0 | ≤ 2.0 | ≤ 2.0 |
| Core concentricity | µm | ≤ 1.0 | ≤ 1.0 | ≤ 1.0 | ≤ 1.0 |
| Environmental and Mechanical Properties | |||||
| Operation temperature | ºC | -45 ~ +85 | -45 ~ +85 | -45 ~ +85 | -45 ~ +85 |
| Screening tension | kpsi | 100 | 100 | 100 | 100 |
Customization Information
- Fiber cladding diameter and coating diameter can be customized according to customer requirements;
- The ratio of major and minor axes of optical fiber core can be customized according to customer requirements, and the maximum ratio is 4;
- The optical fiber beat length can be customized according to customer requirements.
Advanced Industry Applications & Technical Profile
At the forefront of photonics engineering, our Elliptical Core Polarization-Maintaining Fiber (ECF) establishes a robust standard for geometric birefringent PM fiber technology. Unlike conventional stress-applying part (SAP) designs, the purely geometric structure renders the ECF extraordinarily temperature insensitive, maintaining impeccable phase stability and birefringence across extreme thermal fluctuations (-45ºC to +85ºC).
This structural mastery ensures optimal mode field confinement, making it the definitive optical material for constructing ultra-precise fiber optic gyroscopes (FOG), highly sensitive optical fiber current transformers, and sophisticated coherent transmission networks. By eliminating thermal stress-induced cross-talk, our ECF guarantees the long-term reliability demanded by aerospace, industrial sensing, and next-generation fiber laser and amplifier deployments.