HALF WAVE VOLTAGE

Also called , the half wave voltage is the voltage required for inducing a phase change of π for the light going through the modulator.

For intensity modulators, the half wave voltage is the voltage required to turn the modulator output from minimum to maximum transmission (or vice-versa)

For many applications, the half wave voltage is the voltage the modulator must be fed with and it is therefore a main specification of the device.

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