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G.657.B3 Bend Insensitive Single Mode Optical Fiber

G.657.B3 Bend Insensitive Single Mode Optical Fiber

P/N: FIR-G657B3-BI-SM-OF|SKU: 11208

Length of Each Roll

Total Price

$1199.00

$1199.00 / unit

Volume Discount
MOQ: 1 pc
Estimated Delivery Timeline

Production time varies based on product type, quantity, and customization level.

Below is a general estimate for most orders. For exact delivery time, please contact [email protected].

Order Confirmed1 day
Production1–15 days
Shipping3–10 days
DeliveredWorldwide

Shipping: FedEx / DHL / UPS Express · Tracking number provided after shipment

1-Year Warranty
30-Day Returns
30-Day Exchange

G.657.B3 Bend Insensitive Single Mode Optical Fiber

The FIRSOL G.657.B3 Bend-Insensitive Single-Mode Optical Fiber is designed for FTTH networks, enterprise fiber cabling, MDU installations, and other applications requiring ultra-low bending loss at small bending radii.

With enhanced macro-bending performance and stable optical characteristics, this fiber is suitable for compact indoor routing, wall-corner installations, fiber distribution boxes, splicing cassettes, and other space-limited deployment environments. With a minimum bending radius down to 5 mm, G.657.B3 fiber helps reduce additional loss in tight-bend applications while supporting reliable single-mode transmission.

Specifications

Characteristics

Conditions

Specified Values

Units

Optical Characteristics

Attenuation

1310nm

≤0.35

[dB/km]

1383nm(after H2-aging)

≤0.35

[dB/km]

1550nm

≤0.21

[dB/km]

1625nm

≤0.23

[dB/km]

Attenuation vs. Wavelength Max. α difference

1285-1330nm, in reference to 1310nm

≤0.03

[dB/km]

1525-1575nm, in reference to 1550nm

≤0.02

[dB/km]

Zero Dispersion Wavelength(λ0)

--

1300-1324

[nm]

Zero Dispersion Slope(S0)

--

≤0.092

[ps/(nm2·km)]

PMD

Maximum Individual Fibre

--

≤0.1

[ps/√km]

Link Design Value(M=20,Q=0.01%)

--

≤0.06

[ps/√km]

Typical Value

--

0.04

[ps/√km]

Cable Cutoff Wavelength (λCC)

--

≤1260

[nm]

Mode Field Diameter(MFD)

1310nm

8.2-9.0

[μm]

1550nm

9.1-10.1

[μm]

Effective Group Index of Refraction(Neff )

1310nm

1.468

--

1550nm

1.469

--

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 25.2

[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 Specification

Proof Test

--

≥9.0

[N]

--

≥1.0

[%]

--

≥100

[kpsi]

Macro-bend Induced Loss

1 Turn Around a Mandrel of 10 mm Radius

1550nm

≤0.03

[dB]

1 Turn Around a Mandrel of 10 mm Radius

1625nm

≤0.1

[dB]

1 Turn Around a Mandrel of 7.5 mm Radius

1550nm

≤0.08

[dB]

1 Turn Around a Mandrel of 7.5 mm Radius

1625nm

≤0.25

[dB]

1 Turns Around a Mandrel of 5 mm Radius

1550nm

≤0.15

[dB]

1 Turns Around a Mandrel of 5 mm Radius

1625nm

≤0.45

[dB]

Coating Strip Force

typical average force

1.5

[N]

peak force

1.3-8.9

[N]

Dynamic Fatigue Parameter(nd)

--

≥20

--

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