Breaking Installation Limits: OFSCN® G.657.A Bend-Insensitive Fiber – Stability and Efficiency for Your Network

In the era of rapid optical fiber network deployment, space constraints and signal attenuation are core challenges for cabling engineers, whether dealing with tight corners in Fiber-to-the-Home (FTTH) installations or high-density cabinet routing in data centers.

The OFSCN® G.657.A2 Bend-Insensitive Single-Mode Optical Fiber, from Beijing Dacheng Yongsheng Technology Co., Ltd. (DCYS), is specifically designed to solve these pain points. We have summarized all the features of this fiber and answered all your potential questions.

Core Feature 1: Superior Bend Performance – Eliminating Space Constraints

The biggest highlight of the OFSCN® G.657.A2 fiber is its excellent control over Macro-bending Loss.

Macro-bending Loss Parameters	Specification (1550nm)	Advantage Interpretation
Bend Radius R=15 mm, 10 turns	≤0.03 dB	Easily handles compact coiling in splice enclosures and fiber boxes.
Bend Radius R=10 mm, 1 turn	≤0.1 dB	Solves extreme bending issues in narrow conduits and behind furniture.
Bend Radius R=7.5 mm, 1 turn	≤0.5 dB	Suitable for the most stringent indoor cabling and patch cord scenarios.

Addressing Customer Questions (Q&A):

• Q1: How bend-resistant is it, and why do I need this feature?
  • A: Our bend radius standard ensures that signal attenuation is kept extremely low even at the tightest corners during installation. Traditional fibers suffer significant signal loss or failure when bent; the G.657.A2 effectively solves the pain points of "difficult routing and excessive attenuation," guaranteeing stable and long-term network operation.
• Q2: Will performance degrade after prolonged bending?
  • A: No. OFSCN® fiber undergoes a strict proof test during manufacturing ( screening strain). This ensures that the fiber's transmission performance and service life are reliably maintained, even when it is continuously subjected to a small bend radius.

Core Feature 2: High Compatibility and Bandwidth Assurance

The OFSCN® G.657.A2 fiber guarantees seamless support for existing networks while maintaining its superior bend performance.

Addressing Customer Questions (Q&A):

• Q3: Is G.657.A compatible with G.652D? Will splicing loss increase?
  • A: It is fully compatible. Our fiber complies with both ITU-T G.657.A2 and G.652D specifications. Its Mode Field Diameter (MFD) at is highly matched with G.652D fibers (approximately ), allowing for seamless fusion splicing with traditional trunk cables, resulting in extremely low splice loss that does not compromise network performance.
• Q4: What is the benefit of having a Low Water Peak?
  • A: The Low Water Peak feature means the fiber has minimal attenuation around . This allows the network to utilize this extra band for transmission (the E-band), reserving valuable space for future network upgrades and bandwidth expansion.

Diverse Applications: Beyond FTTH

Thanks to its unique properties, the OFSCN® G.657.A2 is not only the ideal choice for access networks but also shows great potential in high-end fields:

• FTTH/FTTB Access Networks: Solves all bending challenges encountered in drop cables and in-building wiring.
• Data Center Cabling: Manages high-density patch cords and narrow cabinet spaces, improving routing efficiency and maintenance ease.
• Fiber Bragg Grating (FBG) Sensing: Suitable for manufacturing FBG sensors, widely used in Structural Health Monitoring and industrial sensing applications, providing a foundation for high-precision, high-reliability measurements.

Key Transmission Parameters at a Glance

Transmission Parameter	Specification	Geometrical Parameter	Specification
1310nm Attenuation	≤ 0.35 dB/km	Cladding Diameter	125±0.7 mum
1550nm Attenuation	≤0.21 dB/km	Coating Diameter	243±7 mum
Polarization Mode Dispersion (PMD)	≤0.1 ps/sqrt(km)	Cut-off Wavelength	≤1260 nm

Upgrade your network today with a more stable and flexible cabling solution.

For more product information, please visit our official website: https://www.ofscn.org/optical-fibers/g-657-a.html

Or contact the Beijing Dacheng Yongsheng Technology Co., Ltd. sales team for customized solutions.