1.
Opt Express
; 20(23): 25478-88, 2012 Nov 05.
Artigo
em Inglês
| MEDLINE
| ID: mdl-23187365
RESUMO
Variable optical carrier reduction via the use of a Si(3)N(4) ring resonator notch filter with tunable extinction ratio is demonstrated in a 10 GHz radio-over-fiber system for improving the modulation efficiency. The extinction of the filter notch is tuned with micro-heaters, by setting the Mach-Zehnder coupler of the ring. Experimental results showing a modulation depth improvement of up to 20 dB are provided.