H - Electricity – 04 – B
Patent
H - Electricity
04
B
325/1, 345/12
H04B 10/17 (2006.01) H01S 3/094 (2006.01)
Patent
CA 2028639
An optical, low-noise amplifier of the active-fiber type, which fiber contains a laser light emitting substance, adapted to be connected to an optical telecommunication fiber and receiving light therefrom at the transmission wavelength. The active fiber is also fed from a light source at a pumping wavelength and has a length corresponding to a partial absorption of the pumping light. Downstream of active fiber, there is a selective mirror device which reflects the light at the pumping wavelength and is transparent to the transmission wavelength light. Preferably, the mirror device consists of an optical demultiplexer adapted to separate the transmission wavelength and the pumping wavelength on two output fibers. A mirror which reflects the pumping wavelength is present at the end of the fiber carrying the pumping wavelength.
Fontana Flavio
Grasso Giorgio
Righetti Aldo
Corning O.t.i. Inc.
Fontana Flavio
Grasso Giorgio
Righetti Aldo
Smart & Biggar
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