What does EM stand for?

External Modulation (Pirelli)

This definition appears very rarely and is found in the following Acronym Finder categories:

Information technology (IT) and computers

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Samples in periodicals archive:

As a result, light sources such as those combined with an expensive external modulation laser diode (EML) had to be used for this application.

United States: Sumitomo Electric Develops 10Gbps 80km Transceiver ...

As a result, light sources such as those combined with an expensive external modulation laser diode (EML) had to be used for this application.

Sumitomo Electric Develops 10Gbps 80km Transceiver with Built-in EDC ...

External modulation on 16 comb channels was demonstrated by HHI, Berlin (Electron.

INNOLUME Introduces its Comb Laser Diode for O-band WDM

By setting the 2026 to external modulation, with the modulation ALC on and the deviation set to 67.

IFR's New GSM Option Enables 2026 Signal Source to Test GSM Base ...

MPI OC-192 Modulator: A 10 Giga Bits Per Second (Gb/s) Digital Modulator offering high-performance, low-drive voltage and low insertion loss to fully enable External Modulation (EM) applications, including long-haul DWDM networks with SONET OC-192 or SDH STM-64 protocols.

Micro Photonix Integration Closes $30 Million in Third-Round ...

External modulation enables the long-haul transmission of digital signals over distances up to and beyond 500 km.

Uniphase Introduces High Speed 10 Gbit/sec Fiberoptic Modulator

The FONSmitter, a fiber optic transmitter that utilizes external modulation (based on lithium niobate technology), allows the cable and telecommunications provider to offer narrowcasting, which had been virtually unavailable due to the costs of existing technologies.

FONS Corp.'s new transmitter makes full internet access affordable ...

By contrast, UTP uses an alternate technology based on an external modulation of a continuously powered laser.

Uniphase Expands into Telecommunications Electro-Optics Market ...