Title:
色分散のためのVIPA(バーチャリ イメージド フェイズド アレイ)を使用した光学装置
Document Type and Number:
Japanese Patent JP4396868
Kind Code:
B2
Abstract:
An apparatus which adds "opposite dispersion" to light, to compensate for chromatic dispersion of the light caused by travelling through an optical fiber. The apparatus includes a virtually imaged phased array (VIPA), and a light returning device. The VIPA provides angular dispersion to the light, and the light returning device returns the light back to the VIPA to undergo multiple reflection inside the VIPA. The light returning device is typically a mirror. In this case, the mirror can be shaped so that the apparatus adds a constant dispersion to the light. Moreover, a lens can be positioned between the VIPA and the light returning device so that (a) the light travels from the VIPA to the light returning device by travelling from the VIPA to the lens and then being focused by the lens to the light returning device, (b) the light returns from the light returning device to the VIPA by travelling from the light returning device to the lens and then being directed by the lens to the VIPA, and (c) the light travelling from the VIPA to the lens is parallel with the returned light travelling from the lens to the VIPA.
Inventors:
White Saki Masataka
Application Number:
JP51313399A
Publication Date:
January 13, 2010
Filing Date:
January 08, 1998
Export Citation:
Assignee:
富士通株式会社
International Classes:
G02B5/28; G02B27/00; G02B6/34; G02B26/06; G02B27/10; H04B10/18
Domestic Patent References:
| JP3516165B2 |
Other References:
M.Shirasaki, Chromatic dispersion compensation using virtually imaged phased array, Optical Amplifiers and Their Applications. Topical Meeting., 1997年 7月, Vol.16, p.274-7
Attorney, Agent or Firm:
Yoshiyuki Osuga
Motoaki Hisagi
Motoaki Hisagi