nanog mailing list archives
Re: Interesting Article on Modulation Schemes
From: Eric Kuhnke <eric.kuhnke () gmail com>
Date: Fri, 8 Jul 2016 13:40:55 -0700
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 () 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>
Current thread:
- www.RT.com bad dns record Ca By (Jul 07)
- Re: www.RT.com bad dns record Spencer Ryan (Jul 07)
- Re: www.RT.com bad dns record Ca By (Jul 07)
- Re: www.RT.com bad dns record Matt Palmer (Jul 07)
- Re: www.RT.com bad dns record Baldur Norddahl (Jul 08)
- Interesting Article on Modulation Schemes Rod Beck (Jul 08)
- Re: Interesting Article on Modulation Schemes Eric Kuhnke (Jul 08)
- Re: Interesting Article on Modulation Schemes Rod Beck (Jul 08)
- Re: Interesting Article on Modulation Schemes Eric Kuhnke (Jul 08)
- Re: Interesting Article on Modulation Schemes Rod Beck (Jul 08)
- Re: www.RT.com bad dns record Ca By (Jul 07)
- Re: www.RT.com bad dns record Spencer Ryan (Jul 07)
- RE: www.RT.com bad dns record Tony Hain (Jul 08)