Didier Juges wrote: > Bruce, > > I have read about this, noise performance also is not good for analog > transmissions, causing very limited dynamic range. > > That's probably why they use either FM or digital coding in just about > all applications. > > I just did not think the jitter would be so bad, even with a laser > transmitter. > > In my case, we are just trying to send a reference signal, but it must > be clean, so unless a clean-up PLL is used, forget about fiber. > > Thanks, > > Didier > _______________________________________________ > time-nuts mailing list > [email protected] > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > > Didier
I presume you are directly modulating the laser. This is hopeless you get chirping and all sorts of other effects that are virtually impossible to tame. An external electrooptic (LiNb03) modulator is the only way that actually works and has a halfway decent performance. Bruce _______________________________________________ time-nuts mailing list [email protected] https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
