H - Electricity – 04 – B
Patent
H - Electricity
04
B
H04B 10/18 (2006.01) G02F 1/21 (2006.01) H01S 3/13 (2006.01) H04B 10/17 (2006.01) G02F 1/03 (2006.01) H01S 5/0687 (2006.01)
Patent
CA 2203845
A control system for an etalon arrangement 4, in an optical transmission system involves applying a dither to a laser 1 upstream of the arrangement, monitoring the output of the arrangement, and using a control means 3 to lock the laser frequency to the etalon arrangement response, or vice versa. The control means operates on the basis of a ratio of derivatives of the monitored output with respect to wavelength, to enable locking to a point on the response curve, independent of power variations.
Système de commande d'un dispositif étalon 4 dans un système de transmission optique. Comprend l'application d'un signal de superposition à un laser 1 en amont du dispositif, le contrôle de la sortie du dispositif et l'utilisation d'un moyen de commande 3 pour verrouiller la fréquence laser sur la réponse du dispositif étalon, ou vice-versa. Le moyen de commande respecte un rapport entre des produits de la sortie contrôlée et la longueur d'onde, afin de permettre le verrouillage à un point de la courbe de réponse, sans égard aux variations de puissance.
Bookham Technology Plc
Millard Allan P.
Northern Telecom Limited
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