Simultaneious single mode and multi-mode propagation of...

Details Simultaneious single mode and multi-mode propagation of... Simultaneious single mode and multi-mode propagation of...

H - Electricity

04

B

H04B 10/17 (2006.01) G02B 6/02 (2006.01) H01S 3/094 (2006.01) H01S 3/131 (2006.01)

Patent

CA 2344115

An optical amplifier having a suitable length of Er/Yb co-doped double clad optical fibre is used to amplify an input optical signal. The inner clad of the double clad optical fibre supports the propagation of a multi mode signal used to excite Er/Yb co-dopants in the double clad optical fibre. Simultaneously, a single mode signal launched from a single mode laser pump co--propagates with the input optical signal in the core of the optical fibre. In this model, single mode light travels in the single mode core region and the multi mode pump light is mainly in the clad region. The interaction between the two laser pumps is negligible.

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