What distances (rough estimates) can be achieved using 40G given various modulation schemes?

Question

Does anyone know what distances (rough estimates) can be achieved using 40G (OC-768) over standard single mode fiber given Duobinary, NRZ, RZ, CS-RZ, DPSK, or DQPSK modulation schemes?

Thanks,
Eric
[e-mail]

Answer 1

Try the following websites, it's the best I could do. You must be very clever:

Scholarly articles for 40G (OC-768) over standard single mode fiber given Duobinary, NRZ, RZ, CS-RZ, DPSK, or DQPSK modulation schemes

Technical Improvements in Photonic Networks for ... - Shimano - Cited by 3
Optical Network Infrastructure for Grid - Simeonidou - Cited by 17



[PDF] Department of Electrical and Computer Systems EngineeringFile Format: PDF/Adobe Acrobat - View as HTML
transmission of modulation formatted signals, NRZ, RZ, CS-RZ, NRZ-DPSK, ... Raleigh scattering intrinsic loss of silica fiber. Single mode optical fibers ...
www.ds.eng.monash.edu.au/techrep/reports/2006/MECSE-23-2006.pdf - Similar pages


[PDF] Investigations of high bit rate optical transmission systems ...File Format: PDF/Adobe Acrobat
(eg NRZ, RZ, duobinary) and novel modulation formats recently proposed, which indicate the ... DWDM transmission systems over standard single mode fiber. ...
edocs.tu-berlin.de/diss/2004/hodzic_anes.pdf - Similar pages

Answer 2

Hi!
This technology is about 5 years old. The distances capable of being covered is dependent on spectral purity of the laser source, as well as maximum power useable before overload problems occur and you start to get Ramon distortions. For a good method of modulation, you might be interested in my patented method of external modulation which minimizes phase distortion problems.

See http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO2&Sect2=HITOFF&p=1&u=%2Fnetahtml%2FPTO%2Fsearch-bool.html&r=34&f=G&l=50&co1=AND&d=PTXT&s1=glaab&s2=distortion&OS=glaab+AND+distortion&RS=glaab+AND+distortion