Title:
波長切り換え及びスペクトル監視用途のための自由空間光学系
Document Type and Number:
Japanese Patent JP4730720
Kind Code:
B2
Abstract:
This invention provides a novel method and apparatus which use a wavelength-dispersing means such as a diffraction grating to spatially separate a multi-wavelength optical signal along with a reference signal by wavelength into multiple spectral channels and a reference spectral component in a spectral array with a predetermined relative alignment. By aligning the reference spectral component at a predetermined location, the spectral channels simultaneously impinge onto designated locations, e.g., on an array of beam-receiving elements positioned in accordance with the spectral array. The reference spectral component may be further maintained at the predetermined location by way of servo-control, thereby ensuring that the spectral channels stay aligned at the designated locations. The present invention can be used to construct a new line of servo-based optical systems, including spectral power monitors and optical multiplexers/demultiplexers, for WDM optical networking applications.
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Inventors:
Wild Jeffrey Pee
Polinkin Pavel
Timmons Michael Jay
Garlet mark h
Polinkin Pavel
Timmons Michael Jay
Garlet mark h
Application Number:
JP2008052065A
Publication Date:
July 20, 2011
Filing Date:
March 03, 2008
Export Citation:
Assignee:
Capella Photonics Incorporated
THE FURUKAW ELECTRIC CO.,LTD.
THE FURUKAW ELECTRIC CO.,LTD.
International Classes:
G01J3/02; G01J3/28; G01J3/36; G01J3/447; H04B10/00; H04B10/07; G02B6/34
Domestic Patent References:
| JP2000147304A | ||||
| JP2000082838A | ||||
| JP62028623A | ||||
| JP2156124A | ||||
| JP3218439A | ||||
| JP2257023A | ||||
| JP2003083810A | ||||
| JP5059261U | ||||
| JP54010756A | ||||
| JP6074825A |
Attorney, Agent or Firm:
Sadao Kumakura
Fumiaki Otsuka
Takaki Nishijima
Hiroyuki Suda
Fumiaki Otsuka
Takaki Nishijima
Hiroyuki Suda