Title:
光ファイバでのデジタル・データのスペクトル的に効率的な伝送のためのシステムおよび方法
Document Type and Number:
Japanese Patent JP4070406
Kind Code:
B2
Abstract:
A system transmits digital data over an optical fiber at high aggregate data rates and high bandwidth efficiencies. The system includes a modulation stage, a frequency division multiplexer, and an optical modulator. The modulation stage QAM-modulates a plurality of incoming digital data channels. The frequency division multiplexer combines the QAM-modulated signals by frequency division multiplexing them into an RF signal. The optical modulator uses the RF signal to modulate an optical carrier for transmission over an optical fiber.
Inventors:
Rowan, Michael W
Chan, Peter
James F, Coward
Tower, Roger Earl
Wilson, Stuart
Yi, Tin Kay
Chan, Peter
James F, Coward
Tower, Roger Earl
Wilson, Stuart
Yi, Tin Kay
Application Number:
JP2000535125A
Publication Date:
April 02, 2008
Filing Date:
February 02, 1999
Export Citation:
Assignee:
Kestrel Solutions Incorporated
International Classes:
H04J14/00; H04L27/34; H04J1/02; H04J14/02; H04L5/06
Domestic Patent References:
| JP8204635A | ||||
| JP4123542A | ||||
| JP6224852A | ||||
| JP5235882A | ||||
| JP9098155A | ||||
| JP64010797A |
Foreign References:
| US5680238 | ||||
| US5896211 | ||||
| US5351148 | ||||
| US5387927 | ||||
| US6078412 |
Attorney, Agent or Firm:
Kazuo Shamoto
Shosuke Imai
Tadashi Masui
Yasushi Kobayashi
Hiroyuki Tomita
Shosuke Imai
Tadashi Masui
Yasushi Kobayashi
Hiroyuki Tomita