Product Detail
G657A2 0.25mm Bare Optical Fiber Spool – Single Mode Fiber 50.4km
G657A2 0.25mm Bare Optical Fiber is a compact single mode fiber solution
supplied in precision spool format for customized optical cable production
and specialized fiber applications.
Designed for efficient handling and flexible integration, this fiber is
available in 50.4km spool lengths, providing convenient material
supply for manufacturers requiring consistent quality, stable performance,
and reliable production efficiency.
Fiber Structure
Fiber Standard
Length Options
Core Features of Our Single Mode Bare Fiber
Ultra Compact Fiber Design
Reduced diameter structure enables compact optical solutions and efficient integration into space-limited applications.
Enhanced Bend Performance
G657A2 fiber technology provides excellent bending resistance for flexible routing and challenging installation environments.
Consistent Optical Quality
Advanced manufacturing control ensures stable optical performance and reliable fiber quality during production.
Flexible Production Integration
Spool packaging format provides convenient handling and supports efficient processing for customized fiber applications.
Product Specifications & Technical Data
Technical Specifications
| Parameter | Specification | Unit |
|---|---|---|
| Fiber Type | G657A2 Single Mode Fiber | – |
| Fiber Diameter With Coating | 245 ± 5 | μm |
| Cladding Diameter | 125 ± 1 | μm |
| Core / Cladding Concentricity Error | ≤0.4 | μm |
| Attenuation @1310nm | ≤0.34 | dB/km |
| Attenuation @1550nm | ≤0.22 | dB/km |
| Attenuation @1625nm | ≤0.24 | dB/km |
| Mode Field Diameter @1310nm | 9.2 ± 0.4 | μm |
| Mode Field Diameter @1550nm | 10.4 ± 0.8 | μm |
| Cable Cutoff Wavelength | ≤1260 | nm |
| PMD Maximum Value | ≤0.2 | ps/km½ |
| Macro Bend Loss (Φ60mm,100 turns) | ≤0.05 | dB |
| Proof Test | ≥1.4 | N |
| Operating Temperature | -60 ~ +85 | ℃ |
Applications of Single Mode Optical Fiber
FTTH & Access Networks
Designed for modern fiber access infrastructure, our optical fiber supports FTTH deployments and broadband connectivity solutions requiring stable transmission performance and flexible installation.
Fiber Optic Cable Manufacturing
Used as a core material for optical cable production, our fiber provides consistent quality and reliable optical performance for different cable structures and customized solutions.
FPV Drone & Aerial Communication
Suitable for advanced aerial communication systems, including FPV and tethered drone applications requiring compact optical solutions and dependable high-speed data transmission.
Industrial & Special Communication
Supporting specialized optical communication environments, our fiber solutions are suitable for industrial systems and customized applications requiring reliable connectivity.
Why Choose TianJin DongFang Group
Your Trusted Partner In The Fiber Optic Industry
TianJin DongFang Group is dedicated to the development and application of fiber optic technologies, serving customers across different markets with a focus on long-term industry growth.
We continuously explore new opportunities in the fiber optic field, working together with partners to support the evolution of modern connectivity and information infrastructure.
Through continuous improvement and industry experience, we aim to create sustainable value for customers and build lasting partnerships worldwide.
Industry Expertise
Years of experience in the fiber optic field allow us to better understand industry trends and customer requirements.
Professional Production System
Well-organized manufacturing processes ensure efficient production management and consistent operation.
Comprehensive Quality Control
Strict inspection procedures help maintain reliable product performance and stable quality standards.
Flexible Product Solutions
We provide adaptable solutions according to different specifications, applications, and project requirements.
Stable Supply Support
Efficient production planning and supply management help ensure reliable delivery for global customers.
Long-Term Cooperation
We value close partnerships with customers through responsive communication and continuous service improvement.
