Optical fiber amplifier

Details Optical fiber amplifier Optical fiber amplifier

H - Electricity

01

S

345/12

H01S 3/07 (2006.01) G02B 6/255 (2006.01) G02B 6/28 (2006.01) H01S 3/094 (2006.01)

Patent

CA 2019253

Abstract of the Disclosure An optical fiber amplifier is disclosed wherein pumping light and signal light are introduced into an optical fiber doped with a rare-earth element to directly amplify the signal light. The optical fiber amplifier of the invention comprises means constituted from a reflecting film, a fiber loop or the like for causing pumping light to pass by a plurality of times in the doped fiber. Due to the provision of the reflective film or the fiber loop, pumping light can be utilized efficiently, and the amplification factor of the optical fiber amplifier is improved.

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