H - Electricity – 01 – S
Patent
H - Electricity
01
S
H01S 3/30 (2006.01) H01S 3/067 (2006.01) H01S 3/23 (2006.01) H01S 5/40 (2006.01) H04B 10/17 (2006.01) H01S 3/16 (2006.01) H01S 3/17 (2006.01)
Patent
CA 2369906
This invention relates to the following four structures for attaining a flat gain spectrum over a wide wavelength region. The first structure relates to a Roman amplifier where a tellurite fiber is pumped with two wavelengths having a predetermined difference. The second structure relates to a Raman amplifier or an optical communication system employing a tellurite fiber and a silica fiber. The third structure relates to an optical fiber amplifier employing an Erbium-doped tellurite fiber of which Erbium concentration is low. The fourth structure relates to an optical fiber amplifier employing a rare-earth doped fiber such as the Erbium-doped fiber and a tellurite fiber.
Masuda Hiroji
Mori Atsusi
Shimizu Makoto
Nippon Telegraph And Telephone Corporation
Norton Rose Or S.e.n.c.r.l. S.r.l./llp
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