G657A1 Single-Mode Optical Fiber Bending Insensitive for Telecommunication

• Customization: Available
• Application: Communication
• Type: Single-mode Fiber
• Connection Structure: FC-LC
• Core: Single Core
• Certification: RoHS, CE, ISO9001
• Brand: OEM
• Sheath Material: PVC
• Model No.: G. 657. A1 Optical Fiber
• Length: 25.2km, 50.4km, 60km, OEM
• Color: Bare or Colored (12 Colors)
• Attenuation @1330: 0.35
• Attenuation @1550: 0.21
• Cladding Diameter: 125 μm
• Coating Diameter: 242±7 μm
• Reel Lenght: 25.2km/50.4km/60km
• Dimensions: 47*49*31cm
• Weight: 21kg
• Warranty: 1year
• Transport Package: Plastic Reels Packed in Carton Box
• Specification: 25X26X32 cm
• Trademark: OEM
• Origin: China
• HS Code: 9001100001
• Production Capacity: 15, 000, 000 Km/Year
• Package Size: 41.00cm * 37.00cm * 52.50cm
• Package Gross Weight: 5.500kg

Product Description

G657A1 Single-Mode Optical Fiber Bending Insensitive for Telecommunication

GL FIBER® bending insensitive single-mode fibre encompasses all the features of FullBand® fibre and provides good resistance to maro-bending. It has low macro-bending sensitivity and low water-peak level. It is comprehensively optimized for use in O-E-S-C-L band (1260 -1625 nm). It offers good resistance to additional losses due to low macro-bending in the 1625 nm wavelength region. This not only supports L-band applications but also allows for easy installation without excessive care when storing the fibre, for example, in splicing cassettes. For cable use inside buildings, the fibre supports installation with small cable bending radii and compact organizers.

Application:

Short pitch cables for special application
High performance optical network operating in O-E-S-C-L band
High speed optical routes for Fibre-to-the-Home networks
High speed optical routes in buildings (FTTx)
Cables with low bending requirements

Feature Characteristics:

1. Low attenuation satisfying the operation demand in O-E-S-C-L band
2. Good bending loss resistance at short radius bends
3. Low bending loss for highly demanding cable designs including ribbons
4. Low PMD satisfying high bit-rate and long distance transmission requirements
5. Accurate geometrical parameters that insure low splicing loss and high splicing efficiency

Standard:

GL FIBER® bending insensitive single mode fibre meets or exceeds the ITU-T Recommendation G.652.D/G.657.A1 including the IEC 60793-2-50 type B1.3/B6.a1 Optical Fibre Specification.

Single-mode G.657.A2 Optical Fiber

Single Mode G652D Optical Fiber

Single-Mode Colored Optical Fiber G657A1,

Technical Specifications

(Custom configurations available upon request.)

Optical Characteristics
Attenuation		1310nm	≤0.35	[dB/km]
		1383nm(after H2-aging)	≤0.35	[dB/km]
		1460nm	≤0.25	[dB/km]
		1550nm	≤0.21	[dB/km]
		1625nm	≤0.23	[dB/km]
Attenuation vs. Wavelength Max. α dierence		1285-1330nm, in reference to 1310nm	≤0.03	[dB/km]
		1525-1575nm, in reference to 1550nm	≤0.02	[dB/km]
Dispersion Coecient		1285-1340nm	-3.5 to 3.5	[ps/(nm·km)]
		1550nm	≤18	[ps/(nm·km)]
		1625nm	≤22	[ps/(nm·km)]
Zero Dispersion Wavelength(λ0)		--	1300-1324	[nm]
Zero Dispersion Slope(S0)		--	≤0.092	[ps/(nm2·km)]
Typical Value		--	0.086	[ps/(nm2·km)]
PMD	Maximum Individual Fibre	--	≤0.1	[ps/√km]
	Link Design ValueM=20Q=0.01%)	--	≤0.06	[ps/√km]
	Typical Value	--	0.04	[ps/√km]
Cable Cuto Wavelength (λCC)		--	≤1260	[nm]
Mode Field DiameterMFD		1310nm	8.4-9.2	[μm]
		1550nm	9.3-10.3	[μm]
Eective Group Index of RefractionNe		1310nm	1.466	--
		1550nm	1.467	--
Point Discontinuities		1310nm	≤0.05	[dB]
		1550nm	≤0.05	[dB]
Geometrical Characteristics
Cladding Diameter		--	125.0±0.7	[μm]
Cladding Non-Circularity		--	≤0.7	[%]
Coating Diameter		--	235-245	[μm]
Coating-Cladding Concentricity Error		--	≤12.0	[μm]
Coating Non-Circularity		--	≤6.0	[%]
Core-Cladding Concentricity Error		--	≤0.5	[μm]
Curl(radius)		--	≥4	[m]
Delivery Length		--	Up to 50.4	[km/reel]
Environmental Characteristics		1310nm, 1550nm & 1625nm
Temperature Dependence Induced Attenuation		-60℃ to +85℃	≤0.05	[dB/km]
Temperature-Humidity Cycling Induced Attenuation		-10°C to +85°C, 98% RH	≤0.05	[dB/km]
Watersoak Dependence Induced Attenuation		23°C, for 30 days	≤0.05	[dB/km]
Damp Heat Dependence Induced Attenuation		85°C and 85% RH, for 30 days	≤0.05	[dB/km]
Dry Heat Aging		85℃, for 30 days	≤0.05	[dB/km]
Mechanical Specication
Proof Test		--	≥9.0	[N]
		--	≥1.0	[%]
		--	≥100	[kpsi]
		--	--	--
Macro-bend Induced Loss	10 Turns Around a Mandrel of 15 mm Radius	1550nm	≤0.25	[dB]
	10 Turns Around a Mandrel of 15 mm Radius	1625nm	≤1.0	[dB]
	1 Turn Around a Mandrel of 10 mm Radius	1550nm	≤0.75	[dB]
	1 Turn Around a Mandrel of 10 mm Radius	1625nm	≤1.5	[dB]
Coating Strip Force		typical average force	1.5	[N]

After Sales Service

Standard Warranty: 12 months or 2,000 operating hours (whichever comes first).
Extended Warranty: Optional coverage up to 36 months.
Global Support: 24/7 technical assistance and spare parts supply.
Training: On-site or remote operation/maintenance training.

Company Profile

Hunan GL Technology Co., Ltd.

Hunan GL Technology Co., Ltd is a leading Chinese manufacturer of optical fiber & cable with over 21 years of expertise. Certified with ISO 9001, CE, and Anatel, we export to 200+ countries, offering reliable machinery backed by R&D innovation and strict quality control.

Why Choose Us?

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FAQ

Q: What’s the lead time for orders?
A: Standard models ship in 15–30 days; customized units require 30–45 days.

Q: Do you provide after-sales service overseas?
A: Yes, we have partnered service centers in key regions.

Q: Can I request a customized bucket size?
A: Absolutely! We offer tailored attachments.

Q: What documents do you provide for export?
A: Full export package (Commercial Invoice, Packing List, Bill of Lading, COC, etc.).

Q: How do I place an order?
A: Contact us via email/phone for a quote, then confirm with a PO.