FTTH Network Low Attenuation Single Mode Optical Fiber G652D, G657A1, G657A2
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Product Highlights
- Wide Wavelength Window: Operates from 1260nm to 1625nm, opening E-band for 100nm more usable wavelengths.
- Low Attenuation Performance: Attenuation as low as 0.21 dB/km at 1550nm and 0.35 dB/km at 1310nm.
- ITU-T G.652D Compliant: Meets or exceeds ITU-T G.652D and IEC 60793-2-50 B1.3 specifications.
- Superior Bending Loss: Optimized for reduced bending loss at L-band (1565nm~1625nm).
- High-Speed Transmission: Supports DWDM and CWDM with excellent PMD performance for long repeater spacing.
- Customizable Fiber Color: Available in bare or 12 different colored options for easy identification.
- Versatile Application: Suitable for central loose tube, ribbon fiber optics, ADSS, and OPGW cables.
Product Attributes
- Customization
- Available
- Application
- Communication
- Type
- Single-mode Fiber
- Model NO.
- G. 652. D/ G657. A1/ G657. A2
- Connection Structure
- N/M
- Material Shape
- Round Wire
- Allowed Lateral Pressure
- N/M
- Allowed Tensile Strength
- 100N<1000N
- Core
- Single Core
- Certification
- ISO9001
- Brand
- Changrong
- Sheath Material
- PVC
- Fiber Type
- G652D, G657A1, G657A2
- Fiber Color
- Bare or Colored (12 Colors)
- Cladding Diameter
- 125 ±1.0 μm
- Coating Diameter
- 243±5 μm
- Attenuation@1310
- 0.35
- Attenuation@1550
- 0.21
- Transport Package
- Plastic Reels Packed in Carton Box
- Specification
- 24.4km/48.8km/50.4km
- Trademark
- Changrong Tech
- Origin
- Anhui, China
- HS Code
- 9001100001
- Production Capacity
- 15, 000, 000 Km/Year
- Package Size
- 27.00cm * 17.00cm * 27.00cm
- Package Gross Weight
- 5.000kg
Shipping
- Shipping Cost:
- Contact the supplier about freight and estimated delivery time.
Online Trading Protection
- Payment Guarantee
-
Platform-protected payments with refund support for eligible order issues.
- Platform Logistics
- Clearer shipment tracking with platform-supported logistics.
- Inspection Service
- Optional pre-shipment inspection for quality and quantity checks.
- After-Sales & Dispute Handling
- Platform-assisted dispute resolution, including refunds or returns when applicable.
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Product Description
Single Mode Optical Fiber G652D, G657A1, G657A2 for Communication Use
G. 652.D single mode optical fiber is designed specially for optical transmission systems operating over the entire wavelength window from 1260nm to 1625nm. By suppressing the water peak that occurs near 1383nm in conventional single mode fibre due to hydroxyl (OH-) ions absorption, the fiber is able to open E-band (1360-1460nm) for operation, and consequently provides 100nm more usable wavelengths. It optimizes attenuation and dispersion across the entire wavelength window from 1260nm to 1625nm, also reduces bending loss at L-band (1565nm~1625nm), and provides bandwidth resources for trunk, metropolitan area and access network.

(1) Comply to or superior to the ITU-T G.652D recommendation and IEC 60793-2-50 B1.3 specification.
(2) Designed for operation over 1260nm to 1625nm wavelength spectrum.
(3) Outstanding optical performance supporting high-speed transmission requirement of DWDM and CWDM.
(4) Excellent PMD performance, supporting high-speed and long repeater spacing transmission system.
(5) Compatible with existing 1310nm equipment.
(1) Application for all kinds of configuration of optical fiber cables: central loose tube, stranded loose tube, backbones fiber optics, ribbon fiber optics, ADSS, OPGW etc.
(2)Low dispersion , attenuation and PMD enables higher transmission speeds with more wavelengths over Long-haul Trunks Communication, CATV and WDM.
| Characteristics | Unit | Value | |
| Geometrical | Cladding Diameter | μm | 125.0±1.0 |
| Cladding Non-circularity | % | ≤1.0 | |
| Core-Cladding Concentricity Error | μm | ≤0.6 | |
| Core Non-circularity | % | ≤12 | |
| Coating Diameter | μm | 243±5 | |
| Coating-Cladding Concentricity Error | μm | ≤12 | |
| Curl Radius | m | ≥4 | |
| Attenuation | 1310nm | dB/km | ≤0.35 |
| 1383nm | dB/km | ≤0.33 | |
| 1550nm | dB/km | ≤0.21 | |
| 1625nm | dB/km | ≤0.24 | |
| Attenuation vs Wavelength Max Difference | 1285nm ~ 1330nm vs 1310nm | dB/km | ≤0.04 |
| 1525nm ~1575nm vs 1310nm | dB/km | ≤0.03 | |
| 1485nm ~1580nm vs 1550nm | dB/km | ≤0.04 | |
| Dispersion Coefficient | 1285nm~1340nm | ps/(nmkm) | ≥-3.5 ≤3.5 |
| 1271nm~1360nm | ps/(nmkm) | ≥-5.3 ≤5.3 | |
| 1480nm~1580nm | ps/(nmkm) | ≤20 | |
| 1550nm | ps/(nmkm) | 13.3-18 | |
| 1625nm | ps/(nmkm) | 17.2-23 | |
| Zero Dispersion Wavelength λ0 | nm | 1300-1324 | |
| Zero Dispersion Slope S0 | ps/(nm²km) | 0.073-0.092 | |
| Typical Value | ps/(nm²km) | ≤0.086 | |
| PMD | Maximum Individual Fiber | ps/√km | ≤0.06 |
| Link (M=20, Q=0.01%) | ps/√km | ≤0.06 | |
| Typical Value | ps/√km | ≤0.04 | |
| Cable Cut-off Wavelength λcc | nm | 1180-1330 | |
| MFD | 1310nm | μm | 9.1±0.4 |
| 1550nm | μm | 10.4±0.5 | |
| Effective Group Index of Refraction | 1310nm | 1.4672 | |
| 1550nm | 1.4683 | ||
| Point Discontinuity | 1310nm | dB | ≤0.05 |
| 1550nm | dB | ≤0.05 | |
| Temperature Cycling | -60ºC ~+85ºC | dB/km | ≤0.03 |
| Temperature Humidity Cycling | 85ºC, RH 85%, 30 Days | dB/km | ≤0.03 |
| Water Immersion | 23ºC, 30 Days | dB/km | ≤0.03 |
| Dry Heat Aging | 85ºC, 30 Days | dB/km | ≤0.03 |
| Proof Test | % | ≥1 | |
| N | ≥9.1 | ||
| Gpa | ≥0.73 | ||
| Coating Strip Force | Peak Force | N | 1.3-8.9 |
| Typical Value | N | 1.9 | |
| Dynamic Fatigue Nd | ≥20 | ||
| Macro-bend Induced Attenuation | 1 turn around a mandrel of Φ 32 mm ,1310nm | dB | ≤0.05 |
| 100 turns around a mandrel of Φ 60 mm 1550nm | dB | ≤0.05 | |
| 100 turns around a mandrel of Φ 60 mm , 1625nm | dB | ≤0.05 | |
| Length per reel | km | 24.4/48.8/50.4 | |


Anhui Changrong Optical Fiber & Cable Technology Co.,Ltd was established in August 2017 ,with a registered capital of RMB 500 million yuan. The company, located in Chuzhou High-tech Industrial Development Zone Anhui Province, is a high-tech enterprise specialized in R&D, production and sales of optical fiber for 5G communication and various types of indoor and outdoor optical cables and devices.
The company has 9 advanced optical fiber drawing towers that won the Second Prize of The State Scientific and Technological Progress Award, a total of 18 production lines and an annual production capacity of 15 million Kilometers. At the same time, the company has introduced more than 500 sets of the most advanced production and testing equipment from the United States, France and other countries at home and abroad to achieve the best solutions for customers.
Adhering to the business philosophy that "the market is the sea, quality is the ship, brand is the sail",the company will continuously enhance production efficiency, expand sales markets, develop new product varieties and continue to improve product quality, so as to provide customers with better services.
About the Supplier
This supplier has been audited by CTI. Verify the report on the official CTI website with ID "QIP-ASR2691199". Items marked "" are certified.
Company Profile
Anhui Changrong Optical Fiber & Cable Technology Co., Ltd (CROFC) is one of the leading global manufacturers of optical fiber and fiber optic cable, with certificates ISO9001, ISO14001, ISO45001, provides integrated and appropriate solutions for telecommunication applications around the world.
For fiber production, equipped with 9 the most advanced fiber drawing towers, high-speed screening machines introduced from France, and other optical and mechanical testing facilities, CROFC is capable of producing 15 million core kilometers of fibers yearly with superior performance.
For cable production, CROFC has 18 sheath production lines, 15 SZ stranding lines, 11 tubing lines and 12 fiber coloriing machines.
CROFC 's laboratory has been awarded the CNAS certificate, and CROFC has continuously improved the quality control system.
With highly advanced R&D and cutting-edge technology within the industry, CROFC's products have been widely applied in China Mobile, China Unicom, China Telecom etc. And exported to North America, South America, Africa and Southeast Asia market.
As a world-class expertise in optical fibers and cables, CROFC is determined to make a commitment to quality, performance and customer services. Let's cooperate and evolve to change the way the world communicates.
CROFC adheres to the business philosophy of "the market is the sea, the quality is the ship, and the brand is the sail", and will continue to strengthen production efficiency, expand sales, increase product varieties, and improve product quality, so as to provide customers with better services.
About Our Factory & Business Background
-
Business Type
- Manufacturer/Factory & Trading Company
- Address
- No. 666 Tiancha Road, Chuzhou High-Tech Zone, Tianchang, Chuzhou, Anhui, China
-
Plant Area
- 83650 square meters
-
Number of Employees
- 214
-
Registered Capital
- 300,000,000 RMB
-
Terms of Payment
- LC, T/T, D/P, PayPal, Western Union, Small-amount payment
-
International Commercial Terms(Incoterms)
- FOB, CIF, CFR, EXW
-
Average Lead Time
-
Peak Season Lead Time: within 15 workdays, one month
Off Season Lead Time: within 15 workdays -
Nearest Port
- Shanghai Port
-
Minimum Order Quantity
- 3000 Metes
-
Supply Chain Partners
- 45
Our Production Capability & Technical Expertise
-
Main Products
- Fiber Optic Cable, Optic Fiber
-
Production Lines
- 32
-
Production Machines
- Fiber drawing line, Take-up machine, Proof‑test tension screen machine, D2 processing machine, Fiber coloring machine, Tubing line, SZ stranding line, Sheathing line
-
QA/QC inspectors
- 42 people
-
Inspection Type for Finished Products
- 100% inspection(Visual inspection & Function inspection)
-
Inspection Method for Finished Products
- Have instructions and uniformly followed
-
Customization Options
- Customization from Samples, Customization from Designs, Full Customization, Minor Customization, Flexible customization
-
ODM Service Available
- Yes
-
OEM Service Available
- Yes
-
R&D Engineers
- 8 people
-
Traceability of Raw Materials
- Yes
-
Own Brand
- Yes
Our Industry Experience & Global Business Record
-
Year of Establishment
- 2017-08-31
-
Export Year
- 9 years
-
Main Markets
- South America, Southeast Asia/ Mideast, Domestic
-
Repeat Buyers Choice
- 80%~100%
-
Number of Foreign Trading Staff
- 6
-
Overseas Agent/Branch
- No
-
New Products Launched in Last year
- Yes
Our Certifications, Standards & Industry Recognition
-
Management System Certification
- ISO9001:2015, ISO45001:2018, ISO14001, ISO50001
-
Product Certification
- Others
-
Cooperated with Fortune 500
- No
FAQ
- What is the operating wavelength range?
- The fiber is designed for operation over the entire wavelength spectrum from 1260nm to 1625nm.
- Does the fiber support E-band operation?
- Yes, by suppressing the water peak near 1383nm, it opens the E-band (1360-1460nm) for operation.
- What are the available fiber types?
- The product is available in G.652D, G.657A1, and G.657A2 fiber types.
- Is the fiber color customizable?
- Yes, the fiber color can be customized to bare or one of 12 available colors.
- What is the minimum order quantity?
- The minimum order quantity is 3000 meters.
- Are OEM and ODM services available?
- Yes, the manufacturer offers OEM, ODM, and full customization services.
- What certifications does the product have?
- The product complies with ISO9001 and meets ITU-T G.652D and IEC 60793-2-50 standards.
- What is the typical lead time?
- The average lead time is within 15 workdays for both peak and off-peak seasons.
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