Interesting Article on Modulation Schemes

Fri Jul 8 20:40:55 UTC 2016

Essentially the transceiver optics are applying the same modulation and
coding that have been used in point-to-point microwave for a long time...
Starting from OOK, up to BPSK and then on to QPSK, 16QAM and possibly 64QAM
with varying levels of FEC.

A singlemode fiber is just an extremely narrow diameter waveguide. Big
difference in frequency between a 71-86 GHz FDD radio pair and optical at
191 to 196 THz.

On Fri, Jul 8, 2016 at 1:50 AM, Rod Beck <rod.beck at unitedcablecompany.com>
wrote:

> The new undersea cable systems are now capable of 18 terabits per fiber
> pair. It is interesting how combinations of bits are being represented by
> combinations of optical features.
>
>
>
> http://www.lightwaveonline.com/articles/print/volume-30/issue-5/features/which-optical-modulation-scheme-best-fits-my-application.html
>
>
> Roderick Beck
>
> Director of Global Sales
>
> United Cable Company
>
> www.unitedcablecompany.com<http://www.unitedcablecompany.com>
>
>