The present invention provides an optically-amplified bidirectional optical adddrop multiplexer for a bidirectional WDM optical communication system including two counterpropagating WDM optical signals. Each counterpropagating WDM signal enters the bidirectional add-drop multiplexer and is placed on an optical path, which does not include the other WDM optical signal. Each WDM optical signal may be amplified and have one or more optical channels added to or dropped from the respective signal. In an exemplary embodiment, one of the bidirectional WDM signals includes optical channels located in the C-band of an EDFA while the other bidirectional WDM signal includes optical channels located in the L-band of and EDFA. In this manner, an optical amplifier particularly selected for channels in a particular gain region may separately amplify each the separated bidirectional WDM signals. Each counterpropagating WDM signal exits the bidirectional add-drop multiplexed and rejoins the bidirectional optical waveguide.

A invenção atual fornece um multiplexer ótico bidirectional ótico-amplificado do adddrop para um sistema de comunicação ótica bidirectional do WDM including dois sinais óticos counterpropagating do WDM. Cada sinal counterpropagating do WDM entra no multiplexer bidirectional da adicion-gota e é colocado em um trajeto ótico, que não inclua o outro sinal ótico do WDM. Cada sinal ótico do WDM pode ser amplificado e tido um ou mais canaleta ótica adicionada a ou deixada cair do sinal respectivo. Em uma incorporação exemplary, um dos sinais bidirectional do WDM inclui as canaletas óticas posicionadas na C-faixa de um EDFA quando o outro sinal bidirectional do WDM incluir as canaletas óticas posicionadas na L-faixa de e no EDFA. Nesta maneira, um amplificador ótico selecionado particularmente para as canaletas em uma região particular do ganho pode separada amplificar cada os sinais bidirectional separados do WDM. Cada sinal counterpropagating do WDM retira a adicion-gota bidirectional multiplexed e torna a reunir o waveguide ótico bidirectional.

 
Web www.patentalert.com

< Rhodanine carboxylic acid derivatives for the treatment and prevention of metabolic bone disorders

< Device for combining optical radiation

> Bistable laser device with multiple coupled active vertical-cavity resonators

> Method and apparatus for wavelength calibration

~ 00082