US Patent 7123788 Apparatus for monitoring optical frequencies of WDM signals

Patent 7123788 was granted and assigned to Korea Advanced Institute of Science and Technology on October, 2006 by the United States Patent and Trademark Office.

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Patent

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Current Assignee

Korea Advanced Institute of Science and Technology

Patent Jurisdiction

United States Patent and Trademark Office

Patent Number

71237880

Patent Inventor Names

Cheon Joo Yoon0

Yeun Chol Jung0

Seung Gyun Shin0

Keun Joo Park0

Date of Patent

October 17, 2006

Patent Application Number

101394690

Date Filed

May 6, 2002

Patent Primary Examiner

‌

Sung Pak

Patent abstract

The present invention relates to a wavelength division multiplexed (WDM) apparatus for monitoring optical frequencies, allowing optical channel frequency monitoring using the crossover property of an arrayed-waveguide grating and pilot tones that are in wide use in optical communication networks and enhancing efficiency of operation, maintenance, and management of WDM optical communication networks.

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