G - Physics – 02 – B
Patent
G - Physics
02
B
G02B 5/28 (2006.01)
Patent
CA 2337223
A dual-band optical filter is disclosed which has two transmission bands. The first band is relatively narrow (about 1 nm) and encompases a wavelength of about 1550 nm, while the second band is relatively broad (greater than 50 nm) to transmit wavelengths in a range of 1300-1400 nm. Accordingly, the filter can be used in wavelength division multiplexed communication systems to simultaneously select a payload channel having a wavelength of approximately 1550 nm, and a 1310 nm service channel.
L'invention concerne un filtre optique comprenant deux bandes de transmission. La première bande est relativement étroite (environ 1 nm) et présente une longueur d'onde d'environ 1550 nm, alors que la seconde bande est relativement large (plus de 50 nm), de manière à transmettre des longueurs d'onde variant entre 1300 et 1400 nm. Par conséquent, le filtre peut être utilisé dans des systèmes de communication de multiplexage en longueur d'onde pour sélectionner simultanément un canal de charge utile présentant une longueur d'onde d'environ 1550 nm et un canal de service de 1310 nm.
Archambault Jean-Luc
Pelekhaty Vladimir
Ciena Corporation
Kirby Eades Gale Baker
LandOfFree
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