Fiber

LEDs vs VCSELs | Encircled Flux (EF) Testing with LED

Since today’s high-speed fiber networks use 850-nm vertical-cavity surface-emitting laser (VCSELs) transceivers, some may be confused about why light emitting diode (LED) light sources are used for testing. Understanding the differences between these two sources will certainly shed some light.

Read the source article at flukenetworks.com

Categories: Fiber, FOTC, SCN

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