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.
Elliptical-Core Polarization-Maintaining Fiber Buyer Guide
Elliptical-core polarization-maintaining fiber (ECF) uses geometric birefringence to maintain polarization with reduced sensitivity to ambient temperature changes. It is suited to fiber-optic gyroscopes, optical current transformers, fiber lasers and polarization-sensitive instruments.
How to Select an ECF Model
- Match the 1310 nm or 1550 nm operating wavelength to the source and optical system.
- Confirm the required 80 µm or 125 µm cladding format and compatible coating dimensions.
- Review mode-field diameter, attenuation, beat length and crosstalk requirements together.
- Define bend radius, routing, temperature range and proof-test requirements.
Information to Include in Your RFQ
- Operating wavelength and preferred ECF model
- Required cladding and coating dimensions
- Beat-length, crosstalk and attenuation targets
- Coil diameter, operating temperature and test method
- Fiber length, quantity, packaging and delivery destination
Frequently Asked Questions
How is elliptical-core PM fiber different from Panda PM fiber?
ECF obtains birefringence primarily from the elliptical core geometry, while Panda fiber uses stress-applying parts around the core. The appropriate design depends on temperature sensitivity, geometry, wavelength and polarization requirements.
Which operating wavelengths are available on this page?
The listed ECF models cover 1310 nm and 1550 nm designs. Final selection should also consider cutoff wavelength, mode-field diameter, attenuation, beat length and crosstalk.
What data is needed to confirm an ECF quotation?
Please provide wavelength, model or dimensional requirements, polarization performance, environmental conditions, order length, quantity and any required test documentation.
Technical inquiry: Sales@opticlumos.com · WhatsApp +86 13871596508