Title:
ELECTRIC FIELD DETECTING OPTICAL APPARATUS
Document Type and Number:
Japanese Patent JP3839415
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide an electric field detecting optical apparatus capable of realizing high sensitivity flexibly corresponding to the shape of a living body on which the apparatus is mounted.
SOLUTION: Laser light from a laser diode 21 is incident on a plurality of series connected electric field absorption elements 23 via a plurality of collimating lenses 33a, and is changed in its intensity by a coupled electric field. The laser light changed in its intensity by the electric field is converted to an electric signal through a photodiode 43. Further, a plurality of optical modulators 10a to 10n are connected thereamong through a flexible optical waveguide 20.
Inventors:
Tadao Nagatsuma
Akihiko Hirata
Mitsuru Shinagawa
Akihiko Hirata
Mitsuru Shinagawa
Application Number:
JP2003065176A
Publication Date:
November 01, 2006
Filing Date:
March 11, 2003
Export Citation:
Assignee:
Nippon Telegraph and Telephone Corporation
International Classes:
G01R29/08; G01R29/12; H04B10/516; H04B10/54; H04B10/61; H04B10/80; H04B13/00; (IPC1-7): H04B13/00; G01R29/08; H04B10/04; H04B10/06; H04B10/142; H04B10/152
Domestic Patent References:
| JP2004012202A | ||||
| JP60028629A | ||||
| JP63196865A |
Attorney, Agent or Firm:
Hidekazu Miyoshi