Invention Grant
- Patent Title: Wavelength-multiplexed optical transmission device, wavelength-multiplexed optical transmission system, wavelength-multiplexed optical transmission method
- Patent Title (中): 波长复用光传输装置，波分复用光传输系统，波分复用光传输方法
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Application No.: US14353049Application Date: 2012-11-05
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Publication No.: US09143846B2Publication Date: 2015-09-22
- Inventor: Nobuhiko Kikuchi
- Applicant: HITACHI, LTD.
- Applicant Address: JP Tokyo
- Assignee: Hitachi, Ltd.
- Current Assignee: Hitachi, Ltd.
- Current Assignee Address: JP Tokyo
- Agency: Mattingly & Malur, PC
- Priority: JP2011-248677 20111114
- International Application: PCT/JP2012/078612 WO 20121105
- International Announcement: WO2013/073398 WO 20130523
- Main IPC: H04Q11/00
- IPC: H04Q11/00 ; H04J14/02
Abstract:
Provided is a wavelength division multiplexing (WDM) optical transmission device which is suitable of performing splitting, wavelength multiplexing, switching, and routing on an optical WDM signal in which optical signals having a spectrum close to a rectangle are arranged with a high density, and efficiency of spectral usage is ultimately high in units of wavelengths. A WDM optical transmission device according to the present invention is configured to cause flat portions of adjacent transmission bands on a wavelength spectrum overlap each other.
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