Large signal three-level superfluorescent fiber sources

Details Large signal three-level superfluorescent fiber sources Large signal three-level superfluorescent fiber sources

H - Electricity

01

S

H01S 3/07 (2006.01) G01B 9/02 (2006.01) G01C 19/72 (2006.01) H01S 3/067 (2006.01) H01S 3/098 (2006.01) H01S 3/131 (2006.01)

Patent

CA 2042255

LARGE SIGNAL THREE-LEVEL SUPERFLUORESCENT FIBER SOURCES Abstract of the Invention There is disclosed a new superfluorescent source comprising a long fiber doped with a lasing material presenting three-level transitions, such as Erbium. Due to the ground state signal absorption present in three-level systems, the source of the present invention can achieve backward signal quantum efficiencies well in excess of the limit of 0.5 exhibited by four-level systems. The source can be used in a Sagnac interferometer which may comprise an optical isolator because of the possible high feedback. STANF96.CPl:dsr6/am7 030191

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