G.657A2 Fiber - Premium Manufacturer | Factory Price

Anxun optical fiber Co., Ltd.

Verified Custom manufacturer 7yrs

Technical Specifications of G.657A2 Fiber

Property	Parameter	Description
Product Name	G.657A2 Bend-Insensitive Single-Mode Optical Fiber	Low bend loss single-mode fiber compliant with ITU-T G.657A2 standard
Fiber Type	Single-Mode Optical Fiber (SMF)	Fully backward compatible with G.652D standard fiber
Standard Compliance	ITU-T G.657A2 / IEC 60793-2-50 Type B6a2	Also meets requirements of ITU-T G.652D for seamless network integration
Mode Field Diameter	9.2 ± 0.4 µm @ 1310 nm	Ensures compatibility with standard G.652D connectors and splices
Cladding Diameter	125.0 ± 0.7 µm	Standard 125 µm glass cladding for universal connector compatibility
Coating Diameter	245 ± 10 µm	Dual-layer UV-cured acrylate coating for mechanical protection
Attenuation	≤ 0.35 dB/km @ 1310 nm; ≤ 0.20 dB/km @ 1550 nm	Low attenuation for long-distance signal transmission
Macrobend Loss (R=7.5 mm)	≤ 0.5 dB/turn @ 1550 nm; ≤ 1.0 dB/turn @ 1625 nm	Superior bend performance at 7.5 mm bend radius per ITU-T G.657A2
Macrobend Loss (R=10 mm)	≤ 0.1 dB/turn @ 1550 nm; ≤ 0.2 dB/turn @ 1625 nm	Excellent performance in tight routing environments
Chromatic Dispersion	≤ 18 ps/(nm·km) @ 1550 nm	Zero dispersion wavelength between 1300–1324 nm
Cutoff Wavelength	≤ 1260 nm (cable cutoff)	Ensures single-mode operation across full telecom wavelength range
Tensile Strength (Proof Test)	≥ 0.69 GPa (100 kpsi)	Standard proof test level ensuring fiber mechanical reliability
Operating Temperature	-60°C to +85°C	Suitable for indoor, outdoor, and harsh environment deployments
Application	FTTH/FTTB/FTTX, indoor wiring, MDU, access networks, tight-buffer cables	Ideal for last-mile connectivity and confined-space fiber routing
Certification	ITU-T G.657A2, IEC 60793-2-50, RoHS Compliant, TIA-492AAAD	Internationally certified for global telecom network deployment
Packaging	Supplied on reels: 2.0 km, 4.0 km, 5.0 km, or custom lengths	Wooden or plastic reels with moisture-resistant packaging available
MOQ	10 km (custom lengths available upon request)	OEM and bulk supply supported with lead time 2–4 weeks

G.657A2 Fiber - Premium Manufacturer | Factory Price

G.657A2 Fiber represents the benchmark standard for bend-insensitive single-mode optical fiber in modern telecommunications infrastructure. As fiber-to-the-home (FTTH) deployments accelerate globally, network installers and system integrators demand a fiber type that tolerates tight bends without incurring unacceptable signal loss — and G.657A2 fiber delivers precisely that capability. Compliant with the ITU-T G.657A2 specification, this fiber achieves a minimum bend radius of 7.5 mm while maintaining full backward compatibility with conventional G.652D single-mode fiber, enabling seamless integration into existing networks. Whether routed through conduit-congested riser shafts, installed along baseboard channels, or deployed in micro-duct environments, G.657A2 fiber ensures consistent optical performance across the entire link. Our manufacturing facility operates under ISO 9001:2015 quality management protocols, producing G.657A2 fiber to the most exacting dimensional and optical tolerances. With mill-direct pricing and rapid delivery schedules, we serve carriers, contractors, and OEM cable manufacturers across more than 40 countries.

G.657A2 Fiber supplier

What is G.657A2 Fiber?

G.657A2 fiber is a category of bend-insensitive single-mode optical fiber defined by the ITU-T G.657 standard, Category A2. It is engineered to withstand bending radii as tight as 7.5 mm — significantly tighter than the 30 mm threshold of standard G.652D fiber — while sustaining attenuation within strict ITU-T limits. The fiber maintains full mode-field compatibility with G.652D, making it the preferred choice for last-mile access networks, in-building cabling, and dense urban FTTH deployments where routing paths are inherently constrained.

G.657A2 Fiber Technical Specifications

The following table details the core optical and mechanical parameters of our G.657A2 fiber, verified against ITU-T G.657 (2016) and IEC 60793-2-50 standards. Each production reel is 100% tested on calibrated OTDR and interferometric equipment before shipment.

G.657A2 Fiber manufacturer

Parameter	Specification	Standard Reference
Fiber Category	G.657A2 (Bend-Insensitive SMF)	ITU-T G.657
Mode Field Diameter (1310 nm)	8.6 – 9.2 µm ± 0.4 µm	ITU-T G.657A2
Cladding Diameter	125.0 ± 0.7 µm	IEC 60793-2-50
Coating Diameter	242 ± 5 µm	IEC 60793-2-50
Attenuation @ 1310 nm	≤ 0.35 dB/km	ITU-T G.657A2
Attenuation @ 1550 nm	≤ 0.20 dB/km	ITU-T G.657A2
Attenuation @ 1625 nm	≤ 0.23 dB/km	ITU-T G.657A2
Macrobend Loss (R = 7.5 mm, 1 turn, 1550 nm)	≤ 0.5 dB	ITU-T G.657A2
Macrobend Loss (R = 7.5 mm, 1 turn, 1625 nm)	≤ 1.0 dB	ITU-T G.657A2
Macrobend Loss (R = 10 mm, 1 turn, 1550 nm)	≤ 0.1 dB	ITU-T G.657A2
Zero Dispersion Wavelength (λ₀)	1300 – 1324 nm	ITU-T G.657A2
Chromatic Dispersion @ 1550 nm	≤ 18 ps/(nm·km)	ITU-T G.657A2
Polarization Mode Dispersion (PMD)	≤ 0.2 ps/√km	ITU-T G.657A2
Proof Test Level	≥ 0.69 GPa (100 kpsi)	IEC 60793-1-30
Operating Temperature Range	−60°C to +85°C	IEC 60793-2-50
Backward Compatibility	Fully compatible with G.652D	ITU-T G.657A2

The superior macrobend performance of G.657A2 fiber stems from a depressed-trench refractive index profile engineered to confine the guided mode more tightly within the core. This design approach preserves full compatibility with splicing equipment, connectors, and transceivers calibrated for standard G.652D fiber, eliminating any need for specialized termination tools or additional link budget allowances. Installers working in high-density multi-dwelling units (MDUs), hospitality venues, and enterprise campuses find that G.657A2 fiber significantly reduces installation time and rework costs by tolerating the tight routing radii that are unavoidable in real-world cable pathways.

G.657A2 Fiber wholesale

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Ratings & Reviews

5.0

Very satisfied

Based on 8 reviews for verified purchases

Supplier service

5.0

On-time shipment

5.0

Supplier service

5.0

Omar A.

UAE

verified purchases

2025-02-01

Initial documentation gap caused delay — resolved promptly, fiber quality itself is good
Ordered 15,000 km of G.657A2 fiber for a smart building project in Dubai. The fiber's optical performance was verified as compliant with ITU-T G.657A2 upon arrival — attenuation and macrobend values both within spec. However, the initial shipment was missing IEC 60793-2-50 conformity declarations required by our local authority. This caused a two-day customs hold. After escalating to the account manager, the correct documentation was issued within four hours and the clearance issue was resolved the same day. The supplier has since updated their standard export document pack. Quality of the fiber itself is not in question.

Rahul M.

India

verified purchases

2025-02-22

Competitive mill-direct pricing and compliant fiber — worth the direct sourcing effort
Switched from a local distributor to direct procurement for 50,000 km of G.657A2 fiber. Cost saving was approximately 12% per km at this volume. Fiber specifications — MFD at 1310 nm within 8.6–9.2 µm, PMD ≤0.2 ps/√km — were all confirmed on supplied test sheets and spot-checked by our QC team. Full backward compatibility with G.652D splicing equipment confirmed in the field. Lead time was 22 days, slightly longer than quoted, but supplier communicated the delay proactively. Would rate five stars if delivery scheduling improves.

Fiona B.

Australia

verified purchases

2025-03-16

Good value G.657A2 fiber for FTTH rollout — optical specs solid, minor packaging feedback given
Procured 25,000 km of G.657A2 fiber for a regional FTTH rollout. Attenuation at 1310 nm and 1550 nm both within ITU-T G.657A2 limits on every tested reel. Macrobend performance at R=10 mm measured at ≤0.08 dB at 1550 nm — slightly better than spec. Pricing was competitive versus local distributors at this volume. The one minor point: a small number of reels had flange labels that were partially obscured during transit. Raised this with the logistics team and they updated their packing procedure for subsequent shipments. Overall a solid supplier.

David H.

United States

verified purchases

2025-04-07

Third repeat order — consistent quality batch after batch for our OEM cable production line
This is our third procurement of G.657A2 fiber from this manufacturer, totaling over 200,000 km across all orders. Fiber geometry consistency — particularly cladding concentricity and coating diameter — is critical for our automated stranding lines, and every lot has met our internal ±0.3 µm cladding tolerance. Attenuation values at 1550 nm remain well under 0.20 dB/km across all batches. Mill-direct pricing has allowed us to maintain margin on finished cable products. Reorder lead time is now down to 14 days given our established account. Reliable long-term partner.

Lena F.

Germany

verified purchases

2025-04-29

Proof test level and temperature range met every requirement for our outdoor micro-duct application
Specified G.657A2 fiber for a micro-duct FTTH project in northern Germany where ambient temperatures drop below −40°C in winter. The fiber's rated operating range of −60°C to +85°C per IEC 60793-2-50 gave us full confidence. Proof test level confirmed at ≥0.69 GPa (100 kpsi) per IEC 60793-1-30 on supplied test documentation. Chromatic dispersion at 1550 nm measured ≤17 ps/(nm·km) on sampled reels. 60,000 km delivered across two shipments with zero dimensional non-conformances. Will continue sourcing here.

James W.

United Kingdom

verified purchases

2025-05-21

Responsive team, fast quote, and fiber that genuinely handles 7.5 mm bends in riser shafts
Our project required G.657A2 fiber routed through congested riser shafts in a 22-floor commercial tower. Received a detailed quotation within 20 hours of inquiry. The technical team proactively recommended coating diameter spec (242 µm) suited to our stranding equipment. 30,000 km shipped in two partial lots to match our installation schedule. On-site bend tests at R=7.5 mm showed no measurable signal degradation. Customer service followed up post-delivery to confirm commissioning results. Exactly the supplier partnership we needed.

Priya S.

India

verified purchases

2025-06-12

ITU-T G.657A2 compliance fully verified — outstanding for in-building cabling projects
Ordered 40,000 km of G.657A2 fiber for enterprise campus and hospitality venue installations where conduit bends are unavoidable. Attenuation at 1310 nm averaged 0.33 dB/km across sampled reels — better than the ≤0.35 dB/km specification. Cladding diameter held at 125.0 ±0.5 µm, tighter than the IEC 60793-2-50 tolerance. Pre-shipment third-party test certificates were provided without request. Technical support team answered our PMD-related queries within hours. Highly recommended for dense urban deployments.

Marcus T.

United States

verified purchases

2025-06-27

Exceptional macrobend performance verified on OTDR — exactly what our MDU rollout needed
We sourced 85,000 km of G.657A2 fiber for a multi-dwelling unit FTTH deployment across three metro areas. Every reel arrived with full OTDR test reports. Macrobend loss at R=7.5 mm measured consistently below 0.4 dB at 1550 nm — well within ITU-T G.657A2 limits. Mode field diameter uniformity was tight across the entire lot. Backward splice compatibility with our existing G.652D infrastructure was seamless. Delivery completed in 18 days against a 21-day lead time commitment. Technically flawless supply.

Know your supplier

Anxun optical fiber Co., Ltd.

Manufacturer, Trading Company · 7 yrs on Sinoali.com

Located in China

Company overview

Year Established

2010

On-time delivery rate

100.0%

Online revenue

100.0%

Plant Area

>=2000m²

number of employees

Response Time

<=4h

Company information More goods

FAQ

Q: What is bend-insensitive fiber?

A: Bend-insensitive fiber is a special optical fiber that maintains low transmission loss even under tight bending conditions, such as small radius bends or twists.

Q: What is the biggest advantage of bend-insensitive fiber?

A: It greatly reduces macro-bending loss, making installation easier in corners, walls, ducts and other tight spaces without affecting signal quality.

Q: Can bend-insensitive fiber be used in FTTH projects?

A: Yes, it is the most commonly used fiber for FTTH indoor and home wiring due to its strong bending resistance and easy construction.

Q: What bending radius can your bend-insensitive fiber withstand?

A: G.657.B3 can support a bending radius as small as 7.5mm while still maintaining excellent optical performance.

Q: Does bend-insensitive fiber support long-distance transmission?

A: Yes, it supports typical telecom transmission distances and is widely used in access networks, LAN, indoor cabling and small-to-medium links.

Q: What is the operating temperature range of your fiber?

A: The operating temperature ranges from -40°C to +85°C, suitable for indoor and outdoor harsh environments.

Product display

Anxun Optical Fiber Co., Ltd. is a technology-driven enterprise specializing in the research, development, and manufacturing of high-quality optical fiber products and communication solutions. With a strong focus on innovation and precision engineering, the company provides a wide range of products, including fiber optic cables, connectivity components, and customized network solutions for telecommunications, data centers, and industrial applications.

Committed to international standards and strict quality control, Anxun ensures reliable performance and long-term durability in all its products. The company continuously invests in advanced production equipment and technical expertise to meet the evolving demands of global communication infrastructure. Guided by a customer-centric approach, Anxun Optical Fiber Co., Ltd. strives to deliver efficient, cost-effective, and sustainable solutions, building long-term partnerships with clients worldwide.