Wide-band erbium-doped fiber amplifier and wavelength...

Details Wide-band erbium-doped fiber amplifier and wavelength... Wide-band erbium-doped fiber amplifier and wavelength...

2005-03-15

2005-03-15

Hellner, Mark (Department: 3663)

Optical: systems and elements

Optical amplifier

Beam combination or separation

C359S341100

Reexamination Certificate

active

06867912

ABSTRACT:
An erbium-doped fiber amplifier and a wavelength division multiplexing optical transmission system equipped with the same are disclosed. The wavelength division multiplexing optical transmission system includes a transmission stage having a first C/L fiber amplifier for amplifying combined C and L-band optical signals, an optical repeater having at least one second C/L fiber amplifier for amplifying the optical signals transmitted from a single mode fiber of a predetermined length, and a dispersion compensating fiber of a predetermined length for compensating dispersions of the amplified optical signals. The system also includes a reception stage having a third C/L fiber amplifier for amplifying the optical signals transmitted from a single mode fiber of a predetermined length, and a receiver for separating the amplified optical signals from the third C/L fiber amplifier into C-band optical signals and L-band optical signals band by band and de-multiplexing the separated amplified optical signals.

REFERENCES:
patent: 6304370 (2001-10-01), Barnard
patent: 6532104 (2003-03-01), Bayart
patent: 6535331 (2003-03-01), Shiota et al.
patent: 6646796 (2003-11-01), Song et al.
patent: 6674570 (2004-01-01), Song et al.

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