Terminology » Fiber Optic » Fibre Optic Terminology Explained

Fibre Optic Terminology Explained

fiber optic optical networking wdm sonet ftth

This page defines various terms related to the optical domain. It covers SDH, PDH, SONET, DWDM, FTTH, WDM, PDMA, wavelength converters, optical ADMs, EDFAs, and SOAs.

Fibre Optic Terms	Basic Description
SDH	Stands for Synchronous Digital Hierarchy
PDH	Stands for Plesiochronous Digital Hierarchy
SONET	Stands for Synchronous Optical Networking
DWDM	Stands for Dense Wavelength Division Multiplexing
FTTH	Stands for Fibre to the Home
WDM	Stands for Wavelength Division Multiplexing
PDMA	Stands for Polarisation Division Multiple Access
Wavelength Converter	Converts optical light from one wavelength to another.
Optical ADM	Optical Add Drop Multiplexer
EDFA	Stands for Erbium-Doped Fiber Amplifier
SOA	Stands for Semiconductor Optical Amplifier
SMF	Single Mode Fiber
MMF	Multimode Fiber
CWDM	Coarse Wavelength Division Multiplexing
OLT	Optical Line Terminal
ONU	Optical Network Unit
ONT	Optical Network Terminal
ODN	Optical Distribution Network
PON	Passive Optical Network
GPON	Gigabit Passive Optical Network
EPON	Ethernet Passive Optical Network
FTTx	Fiber To The x (Home, Building, Curb, etc.)
FTTH	Fiber To The Home
FTTB	Fiber To The Building
FTTC	Fiber To The Curb
FTTN	Fiber To The Node
OSA	Optical Spectrum Analyzer
OTDR	Optical Time Domain Reflectometer
OPM	Optical Power Meter
ROADM	Reconfigurable Optical Add-Drop Multiplexer
OADM	Optical Add-Drop Multiplexer
SFP	Small Form-factor Pluggable
SFP+	Enhanced Small Form-factor Pluggable
QSFP	Quad Small Form-factor Pluggable
VCSEL	Vertical Cavity Surface Emitting Laser
PMD	Polarization Mode Dispersion
CD	Chromatic Dispersion
OXC	Optical Cross-Connect
WSS	Wavelength Selective Switch
BIDI	Bi-Directional (optical module)
APC	Angled Physical Contact (connector type)
UPC	Ultra Physical Contact (connector type)
PC	Physical Contact (connector type)
MPO	Multi fiber Push On (connector)
MTP	Multi fiber Termination Push on (enhanced MPO connector)
PLC	Splitter Planar Lightwave Circuit Splitter
FBG	Fiber Bragg Grating
OSNR	Optical Signal to Noise Ratio
RRH	Remote Radio Head (fiber connected to BBU)
WSS	Wavelength Selective Switch

Jio Fiber FAQs: Your Questions Answered

Answers to frequently asked questions about Jio Fiber, including its technology, benefits, plans, availability, and how it compares to other broadband options.

jio fiber ftth broadband

Fiber Optic Interview Questions and Answers

Prepare for fiber optic job interviews with this comprehensive Q&A. Covers key concepts like FTTH, WDM, SDH, and optical amplifiers.

fiber optic optical network wdm

PDH Over SONET/SDH: A Comprehensive Guide

Explore PDH (Plesiochronous Digital Hierarchy) and its encapsulation within SONET/SDH, covering rates like 2Mbps, 8Mbps, 34Mbps, and 140Mbps for efficient traffic transport.

sonet sdh pdh

WDM: Wavelength Division Multiplexing - Advantages and Disadvantages

Explore the advantages and disadvantages of Wavelength Division Multiplexing (WDM), an optical multiplexing technique, in terms of bandwidth, security, and cost.

wdm wavelength division multiplexing optical fiber

FTTC vs. FTTN vs. FTTH vs. FTTP: A Detailed Comparison

Explore the key differences between FTTC, FTTN, FTTH, and FTTP broadband network architectures, highlighting their distinct fiber optic connectivity approaches.

fiber optic fttx ftth