Title :
Demonstration of CoWDM using DPSK modulator array with injection-locked lasers
Author :
Ibrahim, Selwan K. ; Ellis, A.D. ; Gunning, F. C. Garcia ; Peters, F.H.
Author_Institution :
Dept. of Phys., Univ. Coll. Cork, Cork, Ireland
Abstract :
A practical implementation of coherent wavelength division multiplexing (CoWDM) is demonstrated for the first time using injection-locked lasers and a DPSK modulator array. For a 31.99 Gbit/s system (three subcarriers at 10.664 Gbit/s) the null-to-null spectral bandwidth was only 42.656 GHz and the average receiver sensitivity measured was 33.5 dBm when all subcarrier phases were optimised.
Keywords :
differential phase shift keying; distributed feedback lasers; high-speed optical techniques; laser mode locking; optical arrays; optical communication equipment; optical modulation; wavelength division multiplexing; CoWDM; DFB lasers; DPSK modulator array; average receiver sensitivity; bit rate 10.664 Gbit/s; bit rate 31.99 Gbit/s; coherent wavelength division multiplexing; injection-locked lasers; null-to-null spectral bandwidth; subcarrier phase optimisation;
Journal_Title :
Electronics Letters
DOI :
10.1049/el.2010.2308
