[time-nuts] Optical transfer of time and frequency

Michael Wouters michaeljwouters at gmail.com
Fri Apr 29 03:36:55 EDT 2016


On Fri, Apr 29, 2016 at 1:18 PM, Bruce Griffiths
<bruce.griffiths at xtra.co.nz> wrote:
> Quoting Michael Wouters: "According to this,
>
> http://www.nist.gov/manuscript-publication-search.cfm?pub_id=912449
>
> there are many practical challenges  with a one way free-space optical link."
> That paper indicates that  one way transfer with noise of a few picosec should be feasible using an IR laser.

Oh, yes I see in Fig 2b that the short term, one-way noise is ca. +/-
5 ps. And probably with temperature measurements, the long term
variation could be compensated.

But we still don't know if there is line of sight.

Cheers
Michael


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