OM3 Multimode optical fiber

Laser-optimized multimode fiber

50/125 μm graded-index multimode fiber designed for 850 nm VCSEL-based links. A practical option for LANs, data centers and storage networks using compatible short-reach optics.

Core diameter: 50.0 ± 2.5 μm
Attenuation · 850 nm: ≤ 2.4 dB/km
Effective bandwidth · 850 nm: ≥ 2000 MHz·km

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PRODUCT DATA

Technical specifications

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

OM3 optical fiber reference specifications
Parameter / test condition	Reference specification
Core diameter	50.0 ± 2.5 μm
Cladding diameter	125 ± 1.0 μm
Attenuation at 850 nm	≤ 2.4 dB/km
Attenuation at 1300 nm	≤ 0.6 dB/km
Effective modal bandwidth at 850 nm	≥ 2000 MHz·km
Coating diameter	245 ± 7 μm

Reference source: Jiangsu Nanfang Optical Fiber Product Manual, pages 13–14. Translated from the Chinese manufacturer document. 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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Clear answers from the reference specifications, with the supply scope kept explicit.

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What 850 nm effective modal bandwidth is listed for OM3?

The OM3 reference lists effective modal bandwidth of ≥ 2000 MHz·km and attenuation of ≤ 2.4 dB/km at 850 nm. Use these fiber parameters with the transceiver, connector and complete-channel requirements; they do not independently establish a data rate or reach.

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 OM3 optical fiber RFQ?

For OM3, 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 →

OM3 Multimode optical fiber

Laser-optimized multimode fiber

Technical specifications

Before you request a OM3 quote.

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