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Dense Wavelength Division Multiplexing (DWDM) Testing

Glossary

AFR	absolute frequency reference
ASE	amplified spontaneous emission
BER	bit error ratio
DFB	distributed feedback
EDFA	erbium doped fiber amplifier
FWM	four wave mixing
MPI	multiple path interference
MPI–R	main path interface at the receiver
MPI–S	main path interface at the transmitter
MWM	multiwavelength meter
NF	noise figure
OA	optical amplifier
OD	optical demultiplexer
OEO	optical electrical optical converter
OM	optical multiplexer
OSC	optical supervisory channel
OSNR	optical signal-to-noise ratio
PMD	polarization mode dispersion
RX	optical receiver
SBS	stimulated brillouin scattering
SDH	synchronous digital hierarchy
SNR	signal-to-noise ratio
SPM	self phase modulation
TDM	time division multiplexing
TX	optical transmitter
WDM	wavelength division multiplexing
XPM	cross-phase modulation

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TABLE OF CONTENTS: Definition and Overview 1 The Need for New Testing Tools 2 Spectral Measurements 3 Parameters to Be Measured in the Field 4 The Optical Spectrum Analyzer 5 OSA Characteristics 6 The Wavelength Meter 7 New Requirements for Traditional Fiber-Optic Test Instruments 8 Characterizing Fiber for DWDM Applications 9 Field Testing DWDM Systems 10 Conclusion Self-Test Correct Answers Glossary Comment on This Tutorial