Narrow band incoherent optical carrier generator

H - Electricity – 04 – B

Patent

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Details

H04B 10/04 (2006.01) H01S 3/02 (2006.01) H01S 3/067 (2006.01) H04B 10/12 (2006.01) H04B 10/155 (2006.01) H04B 10/17 (2006.01) H01S 3/08 (2006.01) H01S 3/094 (2006.01)

Patent

CA 2072815

A narrow bandwidth incoherent optical source is provided. A superluminescent source includes a gain medium having an input end and an output end. The input end of the gain medium is optically coupled to a reflector to cause spontaneous emissions within a predetermined band exiting the input of the gain medium to be reflected back into the medium. Spontaneous emissions outside of the predetermined band are lost. The gain medium can comprise a doped fiber, such as an Erbium doped fiber. An optical isolator prevents the superluminescent source from lasing. By providing a plurality of reflectors operating in different bands, the superluminescent source can generate a plurality of optical carriers.

ource optique incohérente à bande étroite. Une source superluminescente comprend un moyen de gain ayant une entrée et une sortie, la sortie étant couplée optiquement à un réflecteur de sorte que des émissions spontanées dans un bande prédéterminée s'échappant de l'entrée soient renvoyées par réflexion dans le moyen de gain. Les émissions spontanées à l'extérieur de la bande prédéterminée sont perdues. Le moyen de gain peut comprendre une fibre dopée, par exemple une fibre dopée à l'erbium. Un photocoupleur empêche la source superluminescente de produire un effet laser. Grâce à un certain nombre de réflecteurs fonctionnant dans des bandes différentes, la source superluminescente peut générer un certain nombre de porteuses optiques.

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