Product Detail
G.657.B3 Ultra-Bendable Single Mode Optical Fiber
G.657.B3 Ultra-Bendable Single Mode Optical Fiber is designed for optical networks where installation space is limited and extremely tight fiber routing is required. With a minimum bend radius of just 5mm, it allows fiber cables to follow sharper corners and compact pathways while maintaining reliable optical connectivity.
The fiber is particularly suited to high-density FTTH deployments, compact indoor networks, data centers, and telecommunications infrastructure where conventional fiber may require larger routing space. Its flexible design provides greater installation freedom in complex building layouts and other space-constrained environments.
Bend Radius
Single Mode Fiber
Temperature Range
Core Features of Our Single Mode Bare Fiber
5mm Bend Radius
Supports a minimum bend radius of 5mm for tight routing in compact installation spaces.
Low Optical Loss
Maintains low attenuation for stable signal transmission over fiber optic networks.
Wide Temperature Range
Designed to maintain stable performance from -60°C to +85°C.
High Mechanical Strength
Strong mechanical performance helps ensure reliable fiber handling and installation.
Product Specifications & Technical Data
| Parameter | Specification | Unit |
|---|---|---|
| Fiber Type | G.657.B3 | — |
| Fiber Mode | Single Mode | — |
| Minimum Bend Radius | 5 | mm |
| Macro-Bending Loss @1550nm | ≤ 0.15 | dB |
| Mode Field Diameter @1310nm | 8.6 ± 0.4 | μm |
| Attenuation @1310nm | ≤ 0.350 | dB/km |
| Attenuation @1550nm | ≤ 0.210 | dB/km |
| Operating Temperature | -60 to +85 | °C |
| Temperature Dependence | ≤ 0.05 | dB/km |
| Dynamic Fatigue Parameter (Nd) | ≥ 20 | — |
| Mechanical Strength | Weibull 50% Probability ≥ 4.00 | GPa |
Applications of Single Mode Optical Fiber
FTTH & Access Networks
Suitable for fiber-to-the-home networks and access infrastructure where optical fiber needs to be routed through compact spaces, corners, walls, and indoor distribution areas.
Indoor Communication Networks
Ideal for residential buildings, offices, commercial facilities, and other indoor communication systems requiring flexible fiber routing and space-efficient installation.
Data Centers & High-Density Networks
Can be used in high-density optical infrastructure where limited installation space requires efficient fiber routing around racks, equipment, and distribution points.
Telecommunication Infrastructure
Applicable to a wide range of telecommunication systems, including optical distribution networks, communication links, and fiber-based infrastructure projects.
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.
