The present invention provides an optical switch including a loss element having a signal loss, and a rare earth doped gain element optically connected in series with the loss element. The rare earth doped gain element is operable to produce a signal gain. The signal gain and the signal loss are about...http://www.google.fr/patents/US20050225839?utm_source=gb-gplus-shareBrevet US20050225839 - Optical switch using rare earth doped glass
Numéro de demande: 10/820,098 Numéro de publication: US 2005/0225839 A1 Date de dépôt: 7 avr. 2004 Brevet délivré: US7340124 ( Date de délivrance 4 mars 2008)
