On Tue, 9 Jul 2002, Peter L. Peres wrote:

>
>In theory, about c/(2*lambda) Hz (== Bauds in this case). In practice, as
>much as you can drive the device to. Diodes for high data rates have
>special design (like controlled impedance feeds and such). I once had a
>book that showed how to interface a laser diode to a ham RF transmitter
>for 432MHz. It consisted of an impedance matching network and a fast diode
>or two, plus a very simple bias network that used a D cell I think. The Tx
>ran 10-20W into the air cooled diode.

The actual limit is lower than I implied, the modulation is deteriorated
by the decay time of the intermediary laser levels (the non-lasing
transitions). However frequency-modulated lasers apparently do not have
this limit ?

Peter

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