Arrangement for reducing insertion loss impairment of...

H - Electricity – 04 – B

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H04B 10/17 (2006.01) H01S 3/067 (2006.01) H04B 10/18 (2006.01) H01S 3/094 (2006.01)

Patent

CA 2205705

An optical fiber amplifier is provided that includes first and second doped optical fiber portions. A directional coupler is adapted to couple pump power to the first and second doped optical fiber portions. An additional optical component is adapted to transmit a substantial portion of the pump power. The optical component also has undesirable attenuating properties at the optical signal wavelength. The optical component is situated between first and second doped optical fiber portions and optically couples the first doped portion to the second doped portion. An optical input port is adapted to couple optical signals to the first and second doped optical fiber portions. An optical output port is coupled to receive an amplified optical signal from the second doped optical fiber portion. An optical pump source is coupled to the directional coupler for providing the pump power.

Un amplificateur optique est proposé qui comprend une première et une deuxième section de fibre optique dopée. Un coupleur directionnel est adapté pour coupler la puissance de pompage aux première et deuxième sections de fibre optique. Un composant optique supplémentaire est adapté pour y transmettre une quantité considérable de puissance de pompage. Le composant optique comporte aussi des propriétés d'atténuation non désirées à la longueur d'onde du signal optique. Le composant optique est situé entre la première et la deuxième sections de fibre optique dopées et effectue un couplage optique de la première section dopée à la deuxième section dopée. Une entrée optique est fournie pour le couplage de signaux optiques à la première et deuxième sections de fibre optique. Une sortie optique est couplée pour recevoir un signal optique amplifié à partir de la deuxième section de fibre optique dopée. Une pompe optique est couplée au coupleur directionnel et fournit la puissance de pompage.

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