OM1 Multimode optical fiber

Multimode fiber for established networks

62.5/125 μm graded-index multimode fiber for local area networks and compatible voice, video and data links. Match the fiber to the existing network geometry, operating wavelength and optical equipment when planning an extension or replacement.

Core diameter: 62.5 ± 2.5 μm
Attenuation · 850 nm: ≤ 2.7 dB/km
OFL bandwidth · 850 nm: ≥ 200 MHz·km

Request a Quote Full specifications ↓

Pricing, order quantity and lead time confirmed for your specification and delivery destination.

PRODUCT DATA

Technical specifications

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

OM1 optical fiber reference specifications
Parameter / test condition	Reference specification
Core diameter	62.5 ± 2.5 μm
Cladding diameter	125.0 ± 1.0 μm
Attenuation at 850 nm	≤ 2.7 dB/km
Attenuation at 1300 nm	≤ 0.6 dB/km
Overfilled modal bandwidth at 850 nm	≥ 200 MHz·km
Overfilled modal bandwidth at 1300 nm	≥ 500 MHz·km
Coating diameter	245 ± 7 μm

Reference source: YOFC OM1 (62.5/125 μm) Multimode Fibre — reference specifications. 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

Before you request a OM1 quote.

Clear answers from the reference specifications, with the supply scope kept explicit.

Compare optical fiber specifications →

What does OM1 62.5/125 μm describe?

The OM1 reference lists a core diameter of 62.5 ± 2.5 μm, cladding of 125.0 ± 1.0 μm and coating of 245 ± 7 μm. Match the core and cladding geometry to the installed multimode network and compatible equipment.

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 OM1 optical fiber RFQ?

For OM1, 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 →

OM1 Multimode optical fiber

Multimode fiber for established networks

Technical specifications

Before you request a OM1 quote.

Make a more informed decision.

Effective Modal Bandwidth: What MHz·km Means for OM3 and OM4

How to Read an Optical Fiber Test Report

What Is an Optical Fiber Reel List? Identity, Length and Traceability

Compare related fibers.

OM3

OM4