Polarization and wavelength stable superfluorescent sources

H - Electricity – 01 – S

Patent

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H01S 3/091 (2006.01) H01S 3/067 (2006.01) H01S 3/094 (2006.01) H04B 10/16 (2006.01) H04B 10/17 (2006.01)

Patent

CA 2621112

The instability of the mean wavelength of a superfluorescent fiber source (SFS) is reduced by randomizing the polarization of light from a pump source or by using polarization maintaining components. In one embodiment, the polarization of a pump source is made more random, leading to greater stability of the mean wavelength of the SFS, with an output mean wavelength that is stable to better than 3 ppm for full rotation of the pump polarization on state. In another embodiment, the polarization of optical radiation throughout the device is kept substantially constant by using polarization maintaining fiber and components, thereby leading to enhanced mean wavelength stability of the SFS.

L'instabilité de la longueur d'onde moyenne d'une source de fibre superfluorescente (SFS) est réduite en randomisant la polarisation de la lumière à partir d'une source de pompage ou en utilisant des composants de maintien de la polarisation. Dans un mode de réalisation, la polarisation d'une source de pompage est rendue plus aléatoire, ce qui accroît la stabilité de longueur d'onde moyenne de la SFS, avec une longueur d'onde moyenne de sortie qui est stable de l'ordre de plus de 3 ppm pour une rotation complète de la polarisation de la pompe dans l'état passant. Dans un autre mode de réalisation, la polarisation de la radiation optique d'un bout à l'autre du dispositif est maintenue considérablement constante en utilisant une fibre et des composants maintenant la polarisation, ce qui donne lieu à une stabilité accrue de la longueur d'onde moyenne de la SFS.

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