Title:
【発明の名称】長スパン光伝送方法
Document Type and Number:
Japanese Patent JP3020633
Kind Code:
B2
Inventors:
Nobuyuki Yoshizawa
Hidenobu Tada
Tetsuro Yabuta
Hidenobu Tada
Tetsuro Yabuta
Application Number:
JP6953191A
Publication Date:
March 15, 2000
Filing Date:
March 11, 1991
Export Citation:
Assignee:
Nippon Telegraph and Telephone Corporation
International Classes:
H04B10/516; G02B6/00; H04B10/00; H04B10/556; H04B10/61; (IPC1-7): H04B10/00; G02B6/00; H04B10/04; H04B10/06; H04B10/142; H04B10/152
Domestic Patent References:
| JP415626A | ||||
| JP4188686A | ||||
| JP62293833A | ||||
| JP2252330A | ||||
| JP4212114A |
Attorney, Agent or Firm:
Akihide Sugimura (1 outside)