2.4.2 - Single Mode Fiber and Multimode Fiber

Flashcards covering key terms and definitions related to Single Mode Fiber and Multimode Fiber optics.

Single Mode Fiber (SMF)

A type of fiber optic cable with a small core (8 to 10 microns) and long wavelengths, using a laser to generate a near infrared light signal.

Multimode Fiber (MMF)

A fiber optic cable with a larger core (62.5 or 50 microns) and shorter wavelength light, which transmits multiple waves of varying lengths.

OS1 and OS2

Grades of Single Mode Fiber; OS1 is designed for indoor use and OS2 is intended for outdoor deployment.

Data rates for SMF

Supports data rates up to 100 Gbps.

Data rates for MMF

Rated for applications up to 1 Gbps.

OM1 and OM2

Categories of Multimode Fiber; OM1 has a 62.5-micron core and OM2 has an early 50-micron core.

VCSEL

Vertical-cavity surface-emitting laser used in OM3/OM4, supports higher modulation than LED transmitters.

LOMMF

Laser optimized Multimode Fiber; designed for use with VCSEL for improved performance.

Optical Transceivers

Devices that convert electrical signals into optical signals and vice versa; SMF ones are slightly more expensive than MMF ones.

ISO/IEC 11801 standard

The standard that defines the categories of multimode fiber (OM) for grading.