RE: [amsat-bb] Fiber Optics at RF

["Timothy J. Salo" <salo@xxxxxxxxxxx>]

> From: "Gary Gonnella" <gary@ridepix.com>
> To: "Amsat-Bb" <amsat-bb@AMSAT.Org>
> Subject: RE: [amsat-bb] Fiber Optics at RF
> Date: Mon, 21 Oct 2002 08:53:39 -0700
> 
> The first question needs to be, Are they designed for Single Mode or Multi
> Mode fiber?  One will not work with the other.

Sort of.  We used to run devices made for single-mode fiber (i.e.
lasers) over multi-mode fiber by putting attenuators between the
device and the fiber.  We did however, have a light meter, so we
weren't, for example, simply working off our computations of what
attenuation ought to be required.

If you are going to be playing fiber, I highly recommend a light meter.
They aren't all that expensive.  I forget what we paid, but it might
have been around a thousand bucks for the meter and various adapters
for the different fiber connectors.

I forget whether an unatennuated receiver can damage a receiver -- you
might want to ask someone who knows about this stuff.

-tjs
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