G.657.A1 Single-mode optical fiber

Bend-insensitive access fiber

G.657.A1 single-mode bend insensitive fiber on reels for FTTH access cable designs. Compare the documented coating options and bend-test conditions with the complete cable requirements.

Attenuation · 1550 nm: ≤ 0.210 dB/km
Cladding diameter: 125 ± 0.7 μm
Coating diameter: 245 ± 10 μm / 200 ± 10 μm

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PRODUCT DATA

Technical specifications

Values below are supplier reference limits. Test conditions and units are shown for engineering review.

G.657.A1 optical fiber reference specifications
Parameter / test condition	Reference specification
Attenuation at 1310 nm	≤ 0.350 dB/km
Attenuation at 1550 nm	≤ 0.210 dB/km
Cladding diameter	125 ± 0.7 μm
Coating diameter	245 ± 10 μm / 200 ± 10 μm
Cable cut-off wavelength	≤ 1260 nm
Macrobend: 15 mm radius, 10 turns, 1550 nm	≤ 0.25 dB

Reference source: BendCom G.657.A1 Bending Insensitive Single-mode Optical Fiber datasheet, pages 1–2. Summarized from the supplied English datasheet. Values describe the source grade; confirm the offered supplier, coating and batch conformity with your quote. Manufacturer series names identify source products, not an authorized distributorship.

SPECIFICATION & PROCUREMENT

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Which coating diameters are listed for G.657.A1?

The G.657.A1 reference lists 245 ± 10 μm / 200 ± 10 μm for coating and 125 ± 0.7 μm for glass cladding. State the exact coating option in your inquiry and confirm compatibility with your cable manufacturing process.

Is this optical fiber on reels or a finished fiber optic cable?

This page describes coated optical fiber on reels for use before cabling, not a finished cable, connector assembly or installed channel. The published table is supplier reference data, not a test report for your order. Ask the quotation to identify the offered manufacturer, exact grade and coating, and the documents that will accompany the allocated reels.

What should I include in a G657A1 optical fiber RFQ?

For G.657.A1, specify the coating option, total fiber-km, preferred continuous length per reel, and delivery country and ZIP or postal code. Request the offered datasheet, traceable reel list and applicable batch test report; state required fields and approval timing. Identify acceptable alternatives separately. Pricing, minimum order quantity and lead time are confirmed with the actual supplier quotation. RFQ checklist → · Reel documentation →

G.657.A1 Single-mode optical fiber

Bend-insensitive access fiber

Technical specifications

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