An optical transmission way duplicate system and a method - Nippon Telegraph and Telephone Corporation

Title:

An optical transmission way duplicate system and a method

Document Type and Number:

Japanese Patent JP6248027

Kind Code:

B2

Inventors:

Tetsuya Manabe
Koshikiya Yusuke
Keiji Okamoto
Masaaki Inoue
Kazunori Katayama

Application Number:

JP2014249233A

Publication Date:

December 13, 2017

Filing Date:

December 09, 2014

Export Citation:

Assignee:

Nippon Telegraph and Telephone Corporation

International Classes:

H04B10/25; H04B10/03; H04B10/07

Domestic Patent References:

Attorney, Agent or Firm:

Kurata Masatoshi
Nobuhisa Nogawa
Takashi Mine
Tadashi Inoue

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