2024-03-29T01:30:25Zhttp://digital.csic.es/dspace-oai/requestoai:digital.csic.es:10261/855632018-07-17T07:48:04Zcom_10261_93com_10261_4com_10261_113col_10261_346col_10261_366
Gain-flattening of fiber Raman amplifiers using non-linear pump spectral broadening
Martín-López, Sonia
González Herráez, Miguel
Corredera, Pedro
Hernanz, María Luisa
Carrasco, A.
We demonstrate experimentally that gain flattening of single-pump fiber Raman amplifiers is possible by use of non-linear broadening of the pump spectrum. In our experiments, pump broadening of a continuous-wave Raman fiber laser tuned at 1455 nm is achieved by propagation in a non-zero dispersion-shifted fiber with small anomalous dispersion at the pump wavelength. The broadened pump spectrum can reach a full width at half maximum of as much as 28 nm. Our results demonstrate that an acceptable flatness of the Raman gain spectrum can be obtained in the 1560-1640 nm region while avoiding pump-to pump non-linear interactions. On the dark side, our measurements show that this configuration introduces more noise than the conventional, non-broadened pump configuration since a non-negligible fraction of the broadened pump power falls within the band of amplification. However, we believe that further work and optimization should demonstrate that gain-flattened fiber Raman amplifiers using a single pump can be achieved over the C (1525-1565 nm) and L (1565-1625 nm) bands. © 2004 Elsevier B.V. All rights reserved.
Peer Reviewed
2013-11-05T10:42:14Z
2013-11-05T10:42:14Z
2004
2013-11-05T10:42:14Z
artículo
http://purl.org/coar/resource_type/c_6501
doi: 10.1016/j.optcom.2004.08.050
issn: 0030-4018
Optics Communications 242: 463-469 (2004)
http://hdl.handle.net/10261/85563
10.1016/j.optcom.2004.08.050
en
none
Elsevier