US 7,746,549 B2Granted

Optical communication apparatus

AssigneeYokogawa Electric Corporation

InventorsNaoaki Machida, Shinji Iio, Morio Wada, Daisuke Hayashi, Shinji Kobayashi, Masayuki Suehiro, Katsuya Ikezawa, Akira Miura, Sadaharu Oka, Chie Sato, Mamoru Hihara, Tsuyoshi Yakihara, Shinichi Nakajima

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Abstract

An optical communication apparatus includes an erbium-doped optical fiber amplifier for amplifying a modulated optical signal, wherein a light which is not modulated is inputted to the erbium-doped optical fiber amplifier together with the optical signal.

Claims5

Dependent claims

An optical communication apparatus comprising:

an erbium-doped optical fiber amplifier configured for amplifying a modulated optical signal,
wherein a light which is not modulated is inputted to the erbium-doped optical fiber amplifier together with the optical signal,
wherein a wavelength of the light which is not modulated is variable with respect to a wavelength of the modulated optical signal.

Dependencies are inferred from the claim text.

Facts

Application: 11/589,175Filed 30 Oct 2006
Priority: JP P.2005-31618031 Oct 2005
Published: US 2007/0127112 A17 Jun 2007
Granted: 29 Jun 2010
Term ends: Not estimatedThe source records don’t support an estimate.

Classification3 codes

H04B 10/294
Signal power control: in a multiwavelength system, e.g. gain equalisation
H04B 10/296
In a multiwavelength system, e.g. gain equalisation: transient power control, e.g. due to channel add/drop or rapid fluctuations in the input power
H04B
Transmission

Family

US 2007/0127112 A1Pre-grant publication · published 7 Jun 2007
US 7,746,549 B2This patent

From the US filing history. Foreign family members aren’t listed.

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